1001 - Document - Cover Page
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1002 - Statement - CONSOLIDATED BALANCE SHEETS
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1003 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)
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1004 - Statement - CONSOLIDATED STATEMENTS OF INCOME
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1005 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
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1006 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY
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1007 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS
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1008 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical)
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999001 - Disclosure - Summary of accounting policies
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999002 - Disclosure - Fair value measurements
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999003 - Disclosure - Derivative instruments and hedging activities
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999004 - Disclosure - Revenue from services provided to customers
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999005 - Disclosure - Collateralized transactions
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999006 - Disclosure - Non-trading investments
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999007 - Disclosure - Securitizations and Variable Interest Entities
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999008 - Disclosure - Financing receivables
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999009 - Disclosure - Leases
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999010 - Disclosure - Business combinations
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999011 - Disclosure - Other assets-Office buildings, land, equipment and facilities and Other / Other liabilities
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999012 - Disclosure - Deposits received at banks
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999013 - Disclosure - Borrowings
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999014 - Disclosure - Earnings per share
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999015 - Disclosure - Employee benefit plans
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999016 - Disclosure - Deferred compensation awards
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999017 - Disclosure - Income taxes
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999018 - Disclosure - Other comprehensive income (loss)
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999019 - Disclosure - Shareholders' equity
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999020 - Disclosure - Regulatory requirements
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999021 - Disclosure - Affiliated companies and other equity-method investees
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999022 - Disclosure - Commitments, contingencies and guarantees
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999023 - Disclosure - Segment and geographic information
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999024 - Disclosure - Related party transactions
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999025 - Disclosure - Supplementary subsidiary guarantee information required under SEC rules
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999026 - Disclosure - Parent company only condensed financial information
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999027 - Disclosure - Summary of accounting policies (Policies)
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999028 - Disclosure - Summary of accounting policies (Tables)
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999029 - Disclosure - Fair value measurements (Tables)
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999030 - Disclosure - Derivative instruments and hedging activities (Tables)
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999031 - Disclosure - Revenue from services provided to customers (Tables)
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999032 - Disclosure - Collateralized transactions (Tables)
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999033 - Disclosure - Non-trading investments (Tables)
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999034 - Disclosure - Securitizations and Variable Interest Entities (Tables)
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999035 - Disclosure - Financing receivables (Tables)
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999036 - Disclosure - Leases (Tables)
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999037 - Disclosure - Business combinations (Tables)
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999038 - Disclosure - Other assets-Office buildings, land, equipment and facilities and Other / Other liabilities (Tables)
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999039 - Disclosure - Deposits received at banks (Tables)
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999040 - Disclosure - Borrowings (Tables)
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999041 - Disclosure - Earnings per share (Tables)
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999042 - Disclosure - Employee benefit plans (Tables)
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999043 - Disclosure - Deferred compensation awards (Tables)
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999044 - Disclosure - Income taxes (Tables)
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999045 - Disclosure - Other comprehensive income (loss) (Tables)
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999046 - Disclosure - Shareholders' equity (Tables)
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999047 - Disclosure - Affiliated companies and other equity-method investees (Tables)
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999048 - Disclosure - Commitments, contingencies and guarantees (Tables)
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999049 - Disclosure - Segment and geographic information (Tables)
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999050 - Disclosure - Summary of accounting policies - Additional information (Detail)
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999051 - Disclosure - Summary of accounting policies - Estimated useful lives for significant asset classes (Detail)
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999052 - Disclosure - Fair value measurements - Fair value of financial instruments measured on recurring basis (Detail)
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999053 - Disclosure - Fair value measurements - Fair value of financial instruments measured on recurring basis (Parenthetical) (Detail)
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999054 - Disclosure - Fair value measurements - Additional information (Detail)
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999055 - Disclosure - Fair value measurements - Schedule of quantitative and qualitative information regarding significant unobservable inputs (Detail)
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999056 - Disclosure - Fair value measurements - Schedule of movements in Level 3 financial instruments (Detail)
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999057 - Disclosure - Fair value measurements - Schedule of unrealized gains and losses recognized for Level 3 financial instruments (Detail)
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999058 - Disclosure - Fair value measurements - Schedule of unrealized gains and losses recognized for Level 3 financial instruments (Parenthetical) (Detail)
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999059 - Disclosure - Fair value measurements - Information on investments where net asset value per share is calculated or disclosed (Detail)
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999060 - Disclosure - Fair value measurements - Gains (losses) due to changes in fair value for financial instruments measured at fair value using fair value option (Detail)
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999061 - Disclosure - Fair value measurements - Impact of changes in its own creditworthiness on certain financial liabilities (Detail)
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999062 - Disclosure - Fair value measurements - Geographic allocations of trading assets related to government, agency and municipal securities (Detail)
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999063 - Disclosure - Fair value measurements - Geographic allocations of trading assets related to government, agency and municipal securities (Parenthetical) (Detail)
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999064 - Disclosure - Fair value measurements - Schedule of carrying values, fair values and classification within the fair value hierarchy for certain classes of financial instrument (Detail)
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999065 - Disclosure - Fair value measurements - Equity securities subject to contractual sale restrictions (Detail)
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999066 - Disclosure - Derivative instruments and hedging activities - Concentration of exposures to credit risk in OTC derivatives with financial institutions (Detail)
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999067 - Disclosure - Derivative instruments and hedging activities - Volume of derivative activity in statement of financial position (Detail)
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999068 - Disclosure - Derivative instruments and hedging activities - Offsetting of derivatives and related collateral amounts (Detail)
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999069 - Disclosure - Derivative instruments and hedging activities - Offsetting of derivatives and related collateral amounts (Parenthetical) (Detail)
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999070 - Disclosure - Derivative instruments and hedging activities - Schedule of derivatives used for trading and non-trading purposes (Detail)
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999071 - Disclosure - Derivative instruments and hedging activities - Schedule of derivative instruments in statement of financial position fair value (Detail)
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999072 - Disclosure - Derivative instruments and hedging activities - Schedule of derivatives designated as hedging instruments and hedged items (Detail)
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999073 - Disclosure - Derivative instruments and hedging activities - Schedule of gains (losses) from derivatives and non-derivatives designated as net investment hedges (Detail)
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999074 - Disclosure - Derivative instruments and hedging activities - Additional information (Detail)
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999075 - Disclosure - Derivative instruments and hedging activities - Schedule of information about written credit derivatives and purchased credit protection (Detail)
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999076 - Disclosure - Derivative instruments and hedging activities - Schedule of information about written credit derivatives by external credit rating of underlying asset (Detail)
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999077 - Disclosure - Derivative instruments and hedging activities - Schedule of information about relevant transactions outstanding (Detail)
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999078 - Disclosure - Derivative instruments and hedging activities - Schedule of information about relevant transactions outstanding (Parenthetical) (Detail)
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999079 - Disclosure - Revenue from services provided to customers - Revenues by types of service (Detail)
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999082 - Disclosure - Revenue from services provided to customers - Schedule of Disaggregation of Asset Management Fees and Custody Fee (Detail)
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999083 - Disclosure - Revenue from services provided to customers - Customer contract balances (Detail)
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999084 - Disclosure - Revenue from services provided to customers - Additional information (Detail)
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999085 - Disclosure - Collateralized transactions - Offsetting of the transactions in the consolidated balance sheets (Detail)
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999086 - Disclosure - Collateralized transactions - Offsetting of the transactions in the consolidated balance sheets (Parenthetical) (Detail)
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999087 - Disclosure - Collateralized transactions - Maturity analysis of repurchase agreements and securities lending transactions (Detail)
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999088 - Disclosure - Collateralized transactions - Securities transferred in repurchase agreements and securities lending transactions (Detail)
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999089 - Disclosure - Collateralized transactions - Securities transferred in repurchase agreements and securities lending transactions (Parenthetical) (Detail)
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999090 - Disclosure - Collateralized transactions - Schedule of securities received as collateral (Detail)
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999091 - Disclosure - Collateralized transactions - Assets owned, pledged as collateral ,primarily to stock exchanges and clearing organizations (Detail)
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999092 - Disclosure - Collateralized transactions - Assets Subject to Lien (Detail)
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999093 - Disclosure - Non-trading investments - Summary of AFS debt securities (Detail)
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999094 - Disclosure - Non-trading investments - Summary of AFS debt securities categorized by remaining contractual maturity (Detail)
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999095 - Disclosure - Non-trading investments - Summary of AFS debt securities in an unrealized loss position (Detail)
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999096 - Disclosure - Non-trading investments - Additional Information (Detail)
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999097 - Disclosure - Securitizations and Variable Interest Entities - Additional information (Detail)
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999098 - Disclosure - Securitizations and Variable Interest Entities - Fair value of retained interests (Detail)
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999099 - Disclosure - Securitizations and Variable Interest Entities - Type and carrying value of financial assets (Detail)
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999100 - Disclosure - Securitizations and Variable Interest Entities - Classification of consolidated VIEs' assets and liabilities (Detail)
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999101 - Disclosure - Securitizations and Variable Interest Entities - Carrying amount of variable interests of unconsolidated VIEs and maximum exposure to loss (Detail)
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999102 - Disclosure - Financing receivables - Summary of loans receivable reported within Loans receivable or Investments in and advances to affiliated companies (Detail)
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999103 - Disclosure - Financing receivables - Changes in total allowance for CECL (Detail)
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999104 - Disclosure - Financing receivables - Additional information (Detail)
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999105 - Disclosure - Financing receivables - Analysis of each class of loans not carried at fair value using internal ratings or equivalent credit quality indicators (Detail)
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999106 - Disclosure - Leases - Types of lease assets under operating leases (Detail)
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999107 - Disclosure - Leases - Additional information (Detail)
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999108 - Disclosure - Leases - Summary of future minimum lease payments to be received under noncancelable operating leases (Detail)
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999109 - Disclosure - Leases - Summary of income and expense for lease (Detail)
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999110 - Disclosure - Leases - Summary of cash flow information and initial recognition of right of use asset and lease liability related to operating leases (Detail)
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999111 - Disclosure - Leases - Summary of Lessee operating lease liability maturity (Detail)
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999112 - Disclosure - Leases - Summary of weighted average discount rate and weighted average remaining lease term of operating leases (Detail)
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999113 - Disclosure - Business combinations - Additional Information (Detail)
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999114 - Disclosure - Business combinations - Summary Of Consideration Net Of Cash Acquired (Detail)
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999115 - Disclosure - Business combinations - Business Combination, Recognized Asset Acquired and Liability Assumed (Detail)
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999116 - Disclosure - Business combinations - Business Combination, Pro Forma Information (Detail)
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999117 - Disclosure - Other assets - Office buildings, land, equipment and facilities and Other / Other liabilities - Schedule of Breakdown of Office buildings, land, equipment and facilities (Detail)
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999118 - Disclosure - Other assets - Office buildings, land, equipment and facilities and Other / Other liabilities - Additional information (Detail)
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999119 - Disclosure - Other assets - Office buildings, land, equipment and facilities and Other / Other liabilities - Schedule of Other assets-Other and Other liabilities (Detail)
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999120 - Disclosure - Other assets - Office buildings, land, equipment and facilities and Other / Other liabilities - Schedule of Other assets-Other and Other liabilities (Parenthetical) (Detail)
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999121 - Disclosure - Other assets - Office buildings, land, equipment and facilities and Other / Other liabilities - Schedule of changes in goodwill within Other assets-Other (Detail)
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999122 - Disclosure - Other assets - Office buildings, land, equipment and facilities and Other / Other liabilities - Schedule of finite-lived intangible assets by type (Detail)
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999123 - Disclosure - Other assets - Office buildings, land, equipment and facilities and Other / Other liabilities - Estimated amortization expenses for next five years (Detail)
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999124 - Disclosure - Other assets - Office buildings, land, equipment and facilities and Other / Other liabilities - Schedule of change in asset retirement obligation (Detail)
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999125 - Disclosure - Deposits received at banks - Summary of Deposit Liabilities (Detail)
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999126 - Disclosure - Deposits received at banks - Schedule of Balance of Time Deposits and Certificates of Deposit (Detail)
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999127 - Disclosure - Deposits received at banks - Additional Information (Detail)
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999128 - Disclosure - Borrowings - Short-term and long-term borrowings (Detail)
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999129 - Disclosure - Borrowings - Short-term and long-term borrowings (Parenthetical) (Detail)
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999130 - Disclosure - Borrowings - Long-term borrowings (Detail)
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999131 - Disclosure - Borrowings - Additional information (Detail)
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999132 - Disclosure - Borrowings - Effective weighted-average interest rates of borrowings (Detail)
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999133 - Disclosure - Borrowings - Maturities of long-term borrowings (Detail)
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999134 - Disclosure - Earnings per share - Earnings per share (Basic and Diluted) (Detail)
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999135 - Disclosure - Earnings per share - Additional information (Detail)
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999136 - Disclosure - Employee benefit plans - Additional information (Detail)
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999137 - Disclosure - Employee benefit plans - Net periodic benefit cost for defined benefit plans (Detail)
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999138 - Disclosure - Employee benefit plans - Reconciliation of changes in projected benefit obligation and fair value of plan assets (Detail)
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999139 - Disclosure - Employee benefit plans - Projected benefit obligation, accumulated benefit obligation and fair value of plan assets for pension plans with ABO and PBO in excess of plan assets (Detail)
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999140 - Disclosure - Employee benefit plans - Amounts in Accumulated other comprehensive income, pre-tax, that have not yet been recognized as components of net periodic benefit cost (Detail)
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999141 - Disclosure - Employee benefit plans - Amounts in Accumulated other comprehensive income, pre-tax, expected to be recognized as components of net periodic benefit cost over next fiscal year (Detail)
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999142 - Disclosure - Employee benefit plans - Schedule of weighted-average assumptions used to determine PBO (Detail)
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999143 - Disclosure - Employee benefit plans - Weighted-average assumptions used to determine net periodic benefit costs (Detail)
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999144 - Disclosure - Employee benefit plans - Information about fair value of plan assets (Detail)
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999145 - Disclosure - Employee benefit plans - Information about fair value of plan assets (Parenthetical) (Detail)
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999146 - Disclosure - Employee benefit plans - Information about plan assets for which Level 3 inputs are utilized to determine fair value (Detail)
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999147 - Disclosure - Employee benefit plans - Expected benefit payments (Detail)
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999148 - Disclosure - Deferred compensation awards - Additional information (Detail)
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999149 - Disclosure - Deferred compensation awards - Activity relating to RSU (Detail)
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999150 - Disclosure - Deferred compensation awards - Activity relating to NSUs and CSUs (Detail)
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999151 - Disclosure - Income Taxes - Components of income tax expense (Detail)
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999152 - Disclosure - Income Taxes - Additional information (Detail)
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999153 - Disclosure - Income taxes - Reconciliation of the effective income tax rate (Detail)
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999154 - Disclosure - Income taxes - Schedule of income taxes paid (Detail)
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999155 - Disclosure - Income taxes - Significant components of deferred tax assets and liabilities (Detail)
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999156 - Disclosure - Income Taxes - Changes in valuation allowance for deferred tax assets (Detail)
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999157 - Disclosure - Income Taxes - Changes in valuation allowance for deferred tax assets (Parenthetical) (Detail)
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999158 - Disclosure - Income Taxes - Schedule of unrecognized tax benefits (Detail)
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999159 - Disclosure - Income Taxes - Summarizes major tax jurisdictions subject to examination (Detail)
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999160 - Disclosure - Other comprehensive income (loss) - Changes in Accumulated other comprehensive income (loss) (Detail)
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999161 - Disclosure - Other comprehensive income (loss) - Significant reclassifications out of Accumulated other comprehensive income (loss) (Detail)
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999162 - Disclosure - Shareholders' equity - Changes in shares of common stock outstanding (Detail)
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999163 - Disclosure - Shareholders' equity - Additional information (Detail)
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999164 - Disclosure - Regulatory requirements - Additional information (Detail)
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999165 - Disclosure - Affiliated companies and other equity-method investees - Additional information (Detail)
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999166 - Disclosure - Affiliated companies and other equity-method investees - Summary of financial information for significant affiliated companies and other equity-method investees (Detail)
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999167 - Disclosure - Affiliated companies and other equity-method investees - Summary of balances and transactions with affiliated companies and other equity-method investees (Detail)
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999168 - Disclosure - Affiliated companies and other equity-method investees - Summary of balances and transactions with affiliated companies and other equity-method investees (Parenthetical) (Detail)
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999169 - Disclosure - Affiliated companies and other equity-method investees - Summary of aggregate carrying amount and fair value of investments in affiliated companies and other equity-method investees (Detail)
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999170 - Disclosure - Affiliated companies and other equity-method investees - Summary of equity in earnings of equity-method investees and dividends from equity-method investees (Detail)
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999171 - Disclosure - Commitments, contingencies and guarantees - Commitments outstanding (Detail)
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999172 - Disclosure - Commitments, contingencies and guarantees - Maturities of commitments (Detail)
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999173 - Disclosure - Commitments, contingencies and guarantees - Additional information (Detail)
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999174 - Disclosure - Commitments, contingencies and guarantees - Maturities of purchase obligations (Detail)
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999175 - Disclosure - Commitments, contingencies and guarantees - Information on derivative contracts and standby letters of credit and other guarantees (Detail)
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999176 - Disclosure - Commitments, contingencies and guarantees - Maturity information on derivative contracts and standby letters of credit and other guarantees (Detail)
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999177 - Disclosure - Segment and geographic information - Business segments' results (Detail)
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999178 - Disclosure - Segment and geographic information - Major components of Income before income taxes in "Other" (Detail)
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999179 - Disclosure - Segment and geographic information - Major components of Income before income taxes in "Other" (Parenthetical) (Detail)
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999180 - Disclosure - Segment and geographic information - Reconciliation of combined business segments' results included in preceding table to reported Net revenue, Non-interest expenses and Income before income taxes (Detail)
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999181 - Disclosure - Segment and geographic information - Geographic allocation of Net revenue and Income (loss) before income taxes from operations by geographic areas, and Long-lived assets (Detail)
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999182 - Disclosure - Parent Company Only Condensed Financial Information - Condensed Balance Sheets (Detail)
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999183 - Disclosure - Parent Company Only Condensed Financial Information - Condensed Statements of Income (Detail)
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999184 - Disclosure - Parent Company Only Condensed Financial Information - Condensed Statements of Cash Flows (Detail)
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999185 - Disclosure - Long-term borrowings - Maturities of long-term borrowings (Detail)
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999186 - Disclosure - Guarantees - Balance of guaranteed obligations (Detail)
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999187 - Disclosure - Dividends from subsidiaries and investees - Schedule of cash dividends paid to company from consolidated subsidiaries and investees accounted for equity method (Detail)
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999188 - Disclosure - Cybersecurity Risk Management and Strategy Disclosure
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1009 - Statement - Leases - Summary of Lessee operating lease liability maturity (Detail) Alternate 1
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Cover [Abstract]
Document Information [Table]
Document Information [Line Items]
Trading Symbol
Document Period End Date
Entity Interactive Data Current
Entity Filer Category
Entity Registrant Name
Entity Voluntary Filers
Entity Well-known Seasoned Issuer
Entity Common Stock, Shares Outstanding
Title of 12(b) Security
Security Exchange Name
Entity File Number
Entity Address, Address Line One
Entity Address, City or Town
Entity Address, Postal Zip Code
Document Annual Report
Document Transition Report
Document Shell Company Report
Document Registration Statement
Contact Personnel Name
Entity Shell Company
Entity Emerging Growth Company
Entity Address, Country
Entity Current Reporting Status
Document Type
City Area Code
Local Phone Number
Country Region
No Trading Symbol Flag
Entity Incorporation, State or Country Code
ICFR Auditor Attestation Flag
Auditor Name
Auditor Firm ID
Auditor Location
Document Financial Statement Error Correction [Flag]
Amendment Flag
Current Fiscal Year End Date
Document Fiscal Period Focus
Document Fiscal Year Focus
Entity Central Index Key
Document Accounting Standard
Entity Addresses, Address Type [Axis]
Address Type [Domain]
Business Contact [Member]
Class of Stock [Axis]
Class of Stock [Domain]
ADR [Member]
ADS [Member]
Common Stock [Member]
Common stock [Member]
CONSOLIDATED BALANCE SHEETS [Abstract]
Statement [Table]
Statement [Table]
Statement [Line Items]
Statement [Line Items]
Liabilities and Equity [Abstract]
LIABILITIES AND EQUITY
Payables and Deposits [Abstract]
Payables and deposits:
Payables and Deposits [Abstract]
Broker-Dealer, Payable to Customer
Payables to customers
Other Payables
Payables to other than customers
Carrying amounts due as of the balance sheet date to parties or arising from transactions not otherwise specified.
Deposits
Deposits received at banks (includes ¥325,570 and ¥316,020 at fair value option)
Total
Payables and Deposits
Total payables and deposits
Payables and deposits.
Collateralized Financings [Abstract]
Collateralized financing:
Securities Sold under Agreements to Repurchase
Securities sold under agreements to repurchase (includes ¥673,648 and ¥571,554 at fair value option)
Securities Loaned
Securities loaned (includes ¥30,216 and ¥122,323 at fair value option)
Securities loaned
Other Secured Financings
Other secured borrowings
Collateralized Financings
Total collateralized financing
Collateralized financing
Equity [Abstract]
Equity:
Shareholders Equity [Abstract]
Nomura Holdings, Inc. ("NHI") shareholders' equity:
Shareholders' Equity [Abstract]
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Common stock
Common Stock, Value, Issued
No par value shares; Authorized—6,000,000,000 shares Issued—3,163,562,601 and 3,088,562,601 shares Outstanding—2,956,210,965 and 2,901,337,224 shares
Common stock
Additional Paid in Capital
Additional paid-in capital
Additional paid-in capital
Retained Earnings (Accumulated Deficit)
Retained earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax
Accumulated other comprehensive income
Accumulated other comprehensive income (loss)
Stockholders' Equity before Treasury Stock
Total NHI shareholders' equity before treasury stock
Treasury Stock, Value
Common stock held in treasury, at cost—207,351,636 and 187,225,377 shares
Common stock held in treasury, at cost
Equity, Attributable to Parent
Total NHI shareholders' equity
Total equity
Stockholders' Equity Attributable to Noncontrolling Interest
Noncontrolling interests
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
Total equity
Balance at beginning of year
Balance at end of year
Short-term Debt
Short-term borrowings (includes ¥630,604 and ¥915,584 at fair value option)
Short-term borrowings
Total
Trading Liabilities
Trading liabilities (includes ¥ nil and ¥436 at fair value option)
Other Liabilities
Other liabilities (includes ¥54,588 and ¥92,076 at fair value option)
Total, Other liabilities
Other liabilities
Long-Term Debt
Long-term borrowings (includes ¥6,915,178 and ¥8,487,521 at fair value option)
Borrowings
Long-term borrowings
Total
Liabilities
Total liabilities
Total
Carrying amount of variable interests, Liabilities
Total liabilities
Commitments and Contingencies
Commitments and contingencies (Note 22)
Debt, Long-term and Short-term, Combined Amount
Borrowings
Assets [Abstract]
ASSETS
Assets [Abstract]
Consolidated VIE assets
Cash And Cash Deposits [Abstract]
Cash and cash deposits:
Cash And Cash Deposits [Abstract]
Cash and Cash Equivalent
Cash and cash equivalents
Cash and cash equivalents reported in Cash and cash equivalents
Restricted Cash and Cash Equivalents
Deposits with stock exchanges and other segregated cash
Cash And Cash Deposits
Total cash and cash deposits
Total cash, cash equivalents and other short-term investments consisting of (i) Cash on hand and demand deposits with banks. (ii) Term deposits with financial institutions.(iii) Cash segregated for regulatory purposes or cash deposited with clearing organizations, such as the Securities Exchange, the Securities Dealers' Associations and others.
Time Deposits Current
Time deposits
Time deposits Current.
Loans And Receivables [Abstract]
Loans and receivables:
Loans And Receivables [Abstract]
Loans Receivable
Loans receivable (includes ¥2,178,376 and ¥2,783,696 at fair value option)
Total
Loans receivable including (i) loans receivable from financial institutions in the inter-bank money market used for short-term financing (ii) Short-term loans receivable from customers which arise from banking business. (iii) Other short-term loans receivable. (iv) Loans to customers who purchase securities under margin transaction contract. (v) Long-term loans receivable from customers which arise from banking business (vi)Other long-term loans receivable.
Receivables from Customers
Receivables from customers (includes ¥50,258 and ¥44,338 at fair value option)
Allowance for Doubtful Accounts Receivable
Allowance for credit losses
Opening balance, Total allowances for current expected credit losses
Ending balance, Total allowances for current expected credit losses
Loans And Receivables Total
Total loans and receivables
Total loans and leases receivable and other receivables net of reported amount consisting of (i) Loans receivable (ii) Receivables from customers (iii) Receivables from other than customers (iv) Allowance for doubtful accounts.
Other Receivables
Receivables from other than customers
Collateralized Agreements [Abstract]
Collateralized agreements:
Securities Purchased under Agreements to Resell
Securities purchased under agreements to resell (includes ¥358,711 and ¥470,736 at fair value option)
Securities purchased under agreements to resell
Securities Borrowed Total
Securities borrowed
Amount, after the effects of master netting arrangements, of securities borrowed from entities in exchange for collateral. Includes assets not subject to a master netting arrangement and not elected to be offset.
Collateralized Agreements
Total collateralized agreements
Collateralized agreements
Investments, Debt and Equity Securities [Abstract]
Trading assets and private equity and debt investments:
Private equity investments
Private equity and debt investments (includes ¥28,212 and ¥34,863 at fair value option)
Private equity and debt investments
The fair value as of the balance sheet date of private equity investments.
Trading Securities and Financial Instruments Owned Principal Investments at Fair Value
Total trading assets and private equity and debt investments
Total financial instruments consisting of (i) Trading assets (ii) Private equity investments.
Financial Instruments, Owned, at Fair Value
Trading assets (includes assets pledged of ¥8,666,326 and ¥10,899,960; includes ¥745,801 and ¥1,043,919 at fair value option)
Trading assets, securities pledged as collateral
Trading assets
Other Assets, Unclassified [Abstract]
Other assets:
Property, Plant and Equipment, Net
Office buildings, land, equipment and facilities (net of accumulated depreciation and amortization of ¥546,117 and ¥600,417)
Office buildings, land, equipment and facilities
Debt Securities, Available-for-Sale and Held-to-Maturity, after Allowance for Credit Loss
Non-trading debt securities (includes ¥226,772 and ¥365,223 at fair value option)
Non-trading debt securities
Investments In Equity Securities
Investments in equity securities (includes assets pledged of ¥272 and ¥537)
Investments in equity securities
Investments in equity securities including investments in equity securities held for relationship purpose following customary business practices in Japan.
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures
Investments in and advances to affiliated companies (includes assets pledged of ¥7,460 and ¥5,919; includes ¥ 11,478 and ¥15,554 at fair value option)
Investments in subsidiaries and affiliates
Other Assets
Other (includes ¥215,854 and ¥276,258 at fair value option)
Other assets
Other assets
Other
Total, Other assets-Other
Total Other Assets
Total other assets
The total of (i)Property, Plant and Equipment, Net, (ii)Nontrading Debt Securities, (iii)Investments in equity securities, (iv)Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures and (v)Other Assets.
Assets
Total assets
Total
Carrying amount of variable interests, Assets
Total assets
Liabilities and Equity
Total liabilities and equity
Consolidated Entities [Axis]
Consolidated Entities [Axis]
Consolidated Entities [Domain]
Consolidated Entities [Domain]
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity, primary beneficiary [Member]
Loans Receivable Fair Value Fair Value Option
Loans receivable, fair value option
Carried at fair value
This element represents the portion of the balance sheet assertion valued at fair value under fair value option by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the fair value of loans receivables which is valued under fair value option.
Securities Purchased Under Agreements to Resell Fair Value Options
Securities purchased under agreements to resell, fair value option
This element represents the portion of the balance sheet assertion valued at fair value under fair value option by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the fair value of securities purchased under agreements to resell which is valued under fair value option.
Trading Securities at Fair Value Option
Trading assets, fair value option
This element represents the portion of the balance sheet assertion valued at fair value under fair value option by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the fair value of trading securities of which fair value is valued under fair value option.
Private Equity Securities at Fair Value Option
Private equity investments, fair value option
This element represents the portion of the balance sheet assertion valued at fair value under fair value option by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure .Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the fair value of private equity investments which is valued under fair value option.
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Office buildings, land, equipment and facilities, net of accumulated depreciation and amortization
Other Assets at Fair Value Option
Other, fair value option
This element represents the portion of the balance sheet assertion valued at fair value under fair value option by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the fair value of other assets in the balance sheet of which is valued under fair value option.
Short Term Borrowings at Fair Value Option
Short-term borrowings, fair value option
Short-term borrowings
This element represents the portion of the balance sheet assertion valued at fair value under fair value option by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the fair value of short-term borrowings of which is valued under fair value option.
Securities Sold Under Agreements to Repurchase Fair Value Option
Securities sold under agreements to repurchase, fair value option
This element represents the portion of the balance sheet assertion valued at fair value under fair value option by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the fair value of securities sold under agreements to repurchase of which fair value is valued under fair value option.
Other Liabilities at Fair Value Option
Other liabilities, fair value option
This element represents the portion of the balance sheet assertion valued at fair value under fair value option by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the fair value of long term debt of which fair value is valued under fair value option.
Long Term Borrowings At Fair Value Option
Long-term borrowings, fair value option
Long-term borrowings
The element may be used in both the balance sheet and disclosure in the same submission. This element represents the portion of the balance sheet assertion valued at fair value under fair value option by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the fair value of long-term borrowings of which is valued under fair value option.
Treasury Stock, Common, Shares
Common stock held in treasury, shares
Receivables from Customers, fair value
Receivables from customers, fair value option
The fair value as of amount due from customers for fees and charges arising from transactions related to the entity's brokerage activities and operations.
Securities loaned, fair value option
This element represents the portion of the balance sheet assertion valued at fair value under fair value option by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the fair value of securities loaned of which fair value is valued under fair value option.
Deposits, Fair Value Disclosure
Deposits received at banks, fair value option
Deposits received at banks
Common Stock, Shares, Outstanding
Outstanding
Common stock outstanding at beginning of year
Common stock outstanding at end of year
Common Stock, Shares, Issued
Issued
Common Stock, Shares Authorized
Authorized
Financial Instruments, Owned, Other, at Fair Value
Securities pledged as collateral
Assets Pledged For Investments In And Advances To Affiliated Companies
Investments in and advances to affiliated companies, assets pledged
Assets pledged for investments in and advances to affiliated companies.
Fair Value Option For Investments In And Advances To Affiliated Companies
Investments in and advances to affiliated companies, fair value option
Fair value option for investments in and advances to affiliated companies.
Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value
Non-trading debt securities
Trading Liabilities, Fair Value Disclosure
Trading liabilities
Debt Security Category [Axis]
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments [Domain]
Collateral Held [Axis]
Collateral Held [Domain]
Equity Securities [Member]
Equities [Member]
Pledged Status [Axis]
Pledged Status [Domain]
Asset Pledged as Collateral [Member]
Income Statement [Abstract]
Revenues [Abstract]
Revenue:
Brokerage Commissions Revenue
Commissions
Investment Banking Revenue
Fees from investment banking
Total
Asset Management Fees and Custody Fee
Asset management and portfolio service fees
Total
Revenue recognized in the period for (1) performance(incentive) fees based on the investment results achieved for management of certain institutional accounts and hedge funds, (2) schedule-based fees earned for management of mutual funds and closed-end funds, based either on average daily net assets or on a combination of the average daily net assets and gross income, and (3) other investment management and advisory fees, (4) fees charged for services related to holding, advising, and managing customer investment assets.
Trading Gain (Loss)
Net gain on trading
Revenue-Net gain on trading
Principal Investment Gain (Loss)
Gain on private equity and debt investments
Interest and Dividend Income, Operating
Interest and dividends
Gain Loss On Investments In Equity Securities
Gain on investments in equity securities
Gain on investments in equity securities
Includes (i) Realized gain on sales of operating investments (ii) Valuation profit on operating investments (iii) Realized Loss on sales of operating investments (iv) Valuation loss on operating investments.
Other Income
Other
Revenue—Other / Non-interest expenses—Other
Revenues
Total revenue
Net revenues
Noninterest Expense [Abstract]
Non-interest expenses:
Labor and Related Expense
Compensation and benefits
Floor Brokerage, Exchange and Clearance Fees
Commissions and floor brokerage
Communications and Information Technology
Information processing and communications
Occupancy, Net
Occupancy and related depreciation
Business Development
Business development expenses
Other Noninterest Expense
Other
Noninterest Expense
Total non-interest expenses
Non-interest expenses
Consolidated non-interest expenses
Per Share of Common Stock
Per share of common stock:
Per Share of Common Stock
Earnings Per Share, Diluted [Abstract]
Diluted—
Diluted—
Earnings Per Share, Diluted
Net income attributable to NHI shareholders per share
Earnings Per Share, Basic [Abstract]
Basic—
Basic—
Earnings Per Share, Basic
Net income attributable to NHI shareholders per share
Interest Expense, Operating and Nonoperating
Interest expense
Revenues, Net of Interest Expense
Net revenue
Consolidated net revenue
Consolidated, Net revenue
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest
Income before income taxes
Consolidated income before income taxes
Consolidated, Income (loss) before income taxes
Income Tax Expense (Benefit)
Income tax expense
Total
Income tax expense
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Net income
Net income
Net income (loss)
Net income before undistributed earnings of subsidiaries
Net Income (Loss) Attributable to Noncontrolling Interest
Less: Net income attributable to noncontrolling interests
Net income attributable to noncontrolling interests
Net income attributable to noncontrolling interests
Net income attributable to NHI shareholders
Net income attributable to NHI shareholders
Net income (loss) attributable to NHI shareholders
Net income attributable to affiliated companies
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other comprehensive income (loss):
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax [Abstract]
Defined benefit pension plans:
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax
Pension liability adjustment
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax
Deferred income taxes
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax
Total
Pension liability adjustment
Defined benefit pension plans
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax [Abstract]
Change in cumulative translation adjustments:
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax
Change in cumulative translation adjustments
Change in cumulative translation adjustments
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax
Deferred income taxes
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax
Total
Other Comprehensive (Income) Loss, Own Credit Adjustments, Adjustment, Net of Tax [Abstract]
Own credit adjustments:
Other Comprehensive (Income) Loss, Own Credit Adjustments, Adjustment, Net of Tax
Other Comprehensive Income (Loss), Own Credit Adjustments, before Tax
Own credit adjustments
Amount before tax, after reclassification adjustments, of appreciation (loss) in value of Own credit.
Other Comprehensive Income (Loss), Own Credit, Tax
Deferred income taxes
Amount of tax expense (benefit), after reclassification adjustments, of appreciation (loss) in value of Own credit.
Other Comprehensive Income (Loss), Own credit adjustments, Net of Tax
Total
Own credit adjustments
Amount of income (loss) from appreciation in value of Own credit after tax and reclassification adjustments.
Other Comprehensive Income (Loss), Net of Tax
Total other comprehensive income (loss)
Total Other comprehensive income (loss), net of tax
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Comprehensive income
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest
Less: Comprehensive income attributable to noncontrolling interests
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Comprehensive income attributable to NHI shareholders
Comprehensive income attributable to NHI shareholders
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax [Abstract]
Non-trading debt securities:
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, before Tax
Net unrealized gain (loss) on non-trading debt securities
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, Tax
Deferred income taxes
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax
Total
Net unrealized loss on non-trading debt securities
Non-trading debt securities
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY [Abstract]
Equity Components [Axis]
Equity Components [Axis]
Equity Component [Domain]
Equity Component [Domain]
Total [Domain]
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Cumulative translation adjustments [Member]
Additional Paid-in Capital [Member]
Additional paid-in capital [Member]
Retained Earnings [Member]
Retained earnings [Member]
AOCI Attributable to Parent [Member]
Accumulated other comprehensive income (loss) [Member]
Noncontrolling Interest [Member]
Noncontrolling interests [Member]
Treasury Stock, Common [Member]
Common stock held in treasury [Member]
Parent [Member]
Total NHI shareholders' equity [Member]
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Defined benefit pension plans [Member]
Pension liability adjustment [Member]
Accumulated Own Credit Adjustments Attributable to Parent [Member]
Own credit adjustments [Member]
Accumulated other comprehensive income (loss) related to Own credit attributable to the parent.
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Non-trading debt securities [Member]
Net unrealized gain (loss) on non-trading debt securities [Member]
Treasury Stock, Value, Acquired, Cost Method
Repurchases of common stock
Repurchased shares of common stock at cost
Stock Repurchased and Retired During Period, Value
Loss on disposal of treasury stock
Stock Issued During Period, Value, Treasury Stock Reissued
Sales of common stock
Dividends, Cash
Cash dividends
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition
Stock-based compensation awards
Stock Issued During Period, Value, Employee Stock Purchase Plan
Common stock issued to employees
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest
Accumulated other comprehensive income (loss) attributable to noncontrolling interests Cumulative translation adjustments
Other net change in noncontrolling interests
Other net change in noncontrolling interests
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent
Net change during the year
Changes in Ownership Interests in Subsidiaries
Changes in ownership interests in subsidiaries
Changes in ownership interests in subsidiaries
Treasury Stock, Retired, Cost Method, Amount
Cancellation of treasury stock
Changes In An Affiliated Company Interests
Changes in an affiliated company's interests
Changes in an affiliated company interests.
Transactions with Non Controlling Interest Holders
Transaction between NHI group and noncontrolling interest holders, net
Transactions with non-controlling interest holders.
CONSOLIDATED STATEMENTS OF CASH FLOWS [Abstract]
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
Cash flows from operating activities:
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Increase (Decrease) in Operating Capital [Abstract]
Changes in operating assets and liabilities:
Increase Decrease Deposits Stock Exchanges and Other Cash
Deposits with stock exchanges and other segregated cash
Increase decrease deposits stock exchanges and other cash.
Increase (Decrease) in Financial Instruments Used in Operating Activities
Trading assets and private equity and debt investments
Increase (Decrease) in Trading Liabilities
Trading liabilities
Increase (Decrease) in Securities Borrowed
Securities borrowed, net of securities loaned
Increase (Decrease) in Receivables
Margin loans and receivables
Increase (Decrease) in Accounts Payable
Payables
Increase (Decrease) in Employee Related Liabilities
Bonus accrual
Increase (Decrease) in Income Taxes Payable
Accrued income taxes, net
Increase (Decrease) in Other Operating Assets and Liabilities, Net
Other, net
Increase Decrease In Securities Purchased Under Agreements To Resell Payables Under Repurchase Agreements
Securities purchased under agreements to resell, net of securities sold under agreements to repurchase
The net change in the beginning and end of period for securities purchased under agreements to resell and payables under repurchase agreements
Depreciation, Depletion and Amortization, Nonproduction
Depreciation and amortization
Share-based Compensation
Stock-based compensation
Gain (Loss) on Investments
Gain on investments in equity securities
Income (Loss) from Equity Method Investments, Net of Dividends or Distributions
Equity in earnings of affiliates, net of dividends received
Gain (Loss) on Disposition of Property Plant Equipment
(Gain) loss on disposal of office buildings, land, equipment and facilities
Proceeds from Sale of Property, Plant, and Equipment
Gain (Loss) on Disposition of property, plant, and equipment
Deferred Income Tax Expense (Benefit)
Deferred income taxes
Subtotal, Deferred
Gain (Loss) on Disposition of Stock in Subsidiary or Equity Method Investee
(Gain) loss on investments in subsidiaries and affiliates
Adjustments On Allowance For Credit Losses
Provision for credit losses
Adjustments on allowance for credit losses.
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Net cash provided by (used in) operating activities
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]
Cash flows from investing activities:
Payments to Acquire Property, Plant, and Equipment
Payments for purchases of office buildings, land, equipment and facilities
Proceeds from Sale of Property, Plant, and Equipment
Proceeds from sales of office buildings, land, equipment and facilities
Payments to Acquire Other Investments
Payments for purchases of equity investments
Proceeds from Sales of Investments in Equity Securities
Proceeds from sales of equity investments
The cash inflow associated with the sale of equity securities during the period.
Payments for (Proceeds from) Loans Receivable
Net cash outflows from loans receivable at banks
Proceeds from Divestiture of Businesses, Net of Cash Divested
Divestures, net of cash disposed of
Payment for (Proceeds from) Other Investing Activity
Other, net
Net change in other investing activities
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Net cash used in investing activities
Origination of Notes Receivable from Related Parties
Payments for purchases or origination of other non-trading loans
Repayment of Notes Receivable from Related Parties
Proceeds from sales or repayments of other non-trading loans
Payments to Acquire Debt Securities, Available-for-Sale
Payments for purchases of available-for-sale debt securities
Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale
Proceeds from sales or maturity of other non-trading debt securities
Payments to Acquire Businesses, Net of Cash Acquired
Acquisitions, net of cash acquired
Increase In Investments In Affiliated Companies
Payments for purchases of investments in affiliated companies
Increase in investments in affiliated companies.
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates
Proceeds from sales of investments in affiliated companies
Payments For Placements Of Time Deposits
Payments for placements of time deposits
Payments for placements of time deposits.
Proceeds From Redemption Or Maturity Of Time Deposits
Proceeds from redemption or maturity of time deposits
Proceeds from redemption or maturity of time deposits.
Payments to Acquire Held-to-Maturity Securities
Payments for purchases of other non-trading debt securities
Proceeds from Sale and Maturity of Held-to-Maturity Securities
Proceeds from sales of available-for-sale debt securities
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Cash flows from financing activities:
Proceeds from Issuance of Long-Term Debt
Proceeds from issuances of long-term borrowings
Repayments of Long-Term Debt
Payments for repurchases or maturity of long-term borrowings
Increase (Decrease) in Deposits
Net cash inflows from deposits received at banks
Proceeds from Sale of Treasury Stock
Proceeds from sales of common stock
Payments for Repurchase of Common Stock
Payments for repurchases of common stock
Payments of Dividends
Payments for cash dividends
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Net cash provided by financing activities
Proceeds from Noncontrolling Interests
Contributions from noncontrolling interests
Payments to Noncontrolling Interests
Distributions to noncontrolling interests
Repayments of Short-Term Debt
Payments for repurchases or maturity of short-term borrowings
Proceeds Payments From Interbank Money Market Borrowings
Net cash inflows (outflows) from interbank money market borrowings
Proceed payments from interbank money market borrowings.
Proceeds from (Repayments of) Other Debt
Net cash inflows (outflows) from other secured borrowings
Payment, Tax Withholding, Share-Based Payment Arrangement
Payments for withholding taxes on stock-based compensation
Total cash paid to tax authorities
Proceeds from Short-Term Debt
Proceeds from issuances of short-term borrowings
Supplemental Cash Flow Information [Abstract]
Supplemental information:
Cash Paid During Period For [Abstract]
Cash paid during the year for—
Cash Paid During Period For [Abstract]
Income Taxes Paid, Net
Income tax payments, net
Interest Paid, Excluding Capitalized Interest, Operating Activities
Interest
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of year
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of year
Total cash, cash equivalent, restricted cash and restricted cash equivalents
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation
Net increase (decrease) in cash, cash equivalents, restricted cash and restricted cash equivalents
Net increase (decrease) in cash, cash equivalents, restricted cash and restricted cash equivalents
Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Effect of exchange rate changes on cash, cash equivalents, restricted cash and restricted cash equivalents
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]
Restricted Cash and Cash Equivalents, Current
Restricted cash and restricted cash equivalents reported in Deposits with stock exchanges and other segregated cash
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Right-of-use asset
ROU assets recognized in connection with new operating leases
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]
Summary of accounting policies
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]
Fair value measurements
Derivative Instruments and Hedging Activities [Abstract]
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Derivative instruments and hedging activities
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]
Revenue from services provided to customers
Collateralized Transactions
Collateralized transactions
Repurchase Agreements, Resale Agreements, Securities Borrowed, and Securities Loaned Disclosure [Text Block]
Collateralized transactions
non-trading investments disclosure [Text Block]
Non-trading investments
Non-trading investments disclosure.
Securitizations and Variable Interest Entities [Abstract]
Securitizations and Variable Interest Entities
Securitizations and Variable Interest Entities Disclosure [Text Block]
Securitizations and Variable Interest Entities
Securitizations and Variable Interest Entities Disclosure [Text Block]
Financing Receivables [Abstract]
Financing Receivables [Text Block]
Financing receivables
Leases [Abstract]
Schedule of cash flow information related to operating leases.
Lease Disclosure [Text Block]
Leases
The entire disclosure for lessor and lessee entity's leasing arrangements.
Business Combination [Abstract]
Business Combination Disclosure [Text Block]
Business combinations
Other assets Office buildings, land, equipment and facilities and Other Other liabilities [Abstract]
Other assets—Office buildings, land, equipment and facilities and Other / Other liabilities.
Other Assets Other Office Buildings Land Equipment And Facilities and Other Other Liabilities [Text Block]
Other assets—Office buildings, land, equipment and facilities and Other / Other liabilities
Other assets Other, Office buildings, land, equipment and facilities, and Other / Other liabilities.
Deposits [Abstract]
Deposit Liabilities Disclosures [Text Block]
Deposits received at banks
Borrowings [Abstract]
Debt Disclosure [Text Block]
Borrowings
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]
Earnings per share
Employee Benefit Plans [Abstract]
Employee Benefit Plans [Abstract]
Pension and Other Postretirement Benefits Disclosure [Text Block]
Employee benefit plans
Deferred Compensation Awards [Abstract]
Schedule of Deferred Compensation Arrangement with Individual, Share-based Payments [Table Text Block]
Deferred compensation awards
Income Tax Disclosure [Abstract]
Income Tax [Abstract]
Income Tax Disclosure [Text Block]
Income taxes
Accumulated Other Comprehensive Income (loss)
Accumulated other comprehensive income (loss) [Abstract]
Comprehensive Income (Loss) Note [Text Block]
Other comprehensive income (loss)
Stockholders' Equity [Abstract]
Equity [Text Block]
Shareholders' equity
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]
Regulatory Capital Requirements under Banking Regulations [Text Block]
Regulatory requirements
Affiliated Companies and Other Equity-method Investees [Abstract]
Affiliated companies and other equity-method investees
Affiliated Companies And Other Equity Method Investees [Text Block]
Affiliated companies and other equity-method investees
Affiliated Companies and Other Equity Method Investees [Text Block]
Commitments, Contingencies and Guarantees [Abstract]
Commitments Contingencies and Guarantees [Text Block]
Commitments, contingencies and guarantees
Segment and Geographic Information [Abstract]
Segment Reporting Disclosure [Text Block]
Segment and geographic information
Related Party Transactions [Abstract]
Related Party Transactions Disclosure [Text Block]
Related party transactions
Supplementary Subsidiary Guarantee Information Required under SEC Rules [Abstract]
Supplementary subsidiary guarantee information required under SEC rules
Guarantor Subsidiaries [Text Block]
Supplementary subsidiary guarantee information required under SEC rules
Guarantor Subsidiaries [Text Block]
Condensed Financial Information Disclosure [Abstract]
Condensed Financial Statements [Table]
Parent Company [Member]
Total [Member]
Condensed Financial Statements, Captions [Line Items]
Condensed Financial Information of Parent Company Only Disclosure [Text Block]
Parent Company Only Condensed Financial Information
Business Description and Accounting Policies [Text Block]
Description of business
New Accounting Pronouncements, Policy [Policy Text Block]
New accounting pronouncements adopted during the current year
Recent Accounting Developments Policy [Policy Text Block]
Future accounting developments
The entire disclosure for the recent accounting developments.
Consolidation, Policy [Policy Text Block]
Basis of presentation
Use of Estimates, Policy [Policy Text Block]
Use of estimates
Fair Value of Financial Instruments, Policy [Policy Text Block]
Fair value of financial instruments
Transfers and Servicing of Financial Assets, Policy [Policy Text Block]
Transfers of financial assets
Foreign Currency Transactions and Translations Policy [Policy Text Block]
Foreign currency translation
Revenue Recognition, Policy [Policy Text Block]
Revenue from services provided to customers
Trading Assets and Trading Liabilities [Policy Text Block]
Trading assets and trading liabilities
Disclosure of accounting policy for trading assets and trading liabilities.
Repurchase and Resale Agreements Policy [Policy Text Block]
Collateralized agreements and collateralized financing
Derivatives, Policy [Policy Text Block]
Derivatives
Finance, Loans and Leases Receivable, Policy [Policy Text Block]
Loans receivable
Trade and Other Accounts Receivable, Policy [Policy Text Block]
Other receivables
Loan Commitments Policy [Policy Text Block]
Loan commitments
Disclosure of accounting policy for loan commitments
Payables and Deposits Policy [Policy Text Block]
Payables and deposits
Payables and deposits are generally measured at contractual amounts due.
Property, Plant and Equipment, Policy [Policy Text Block]
Office buildings, land, equipment and facilities
Debt, Policy [Policy Text Block]
Short-term and long-term borrowings
Income Tax, Policy [Policy Text Block]
Income taxes
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]
Stock-based and other compensation awards
Earnings Per Share, Policy [Policy Text Block]
Earnings per share
Cash and Cash Equivalents, Policy [Policy Text Block]
Cash and cash equivalents
Goodwill and Intangible Assets, Policy [Policy Text Block]
Goodwill and intangible assets
Pension and Other Postretirement Plans, Policy [Policy Text Block]
Employee benefit plans
Allowance For Current Expected Credit Lossess [Policy Text Block]
Allowance for current expected credit losses
Allowance for current expected credit lossess [Policy Text Block].
Non Trading Investments [Policy Text Block]
Non-trading investments
Non Trading Investments.
Voluntary Change Accounting Policy [Policy Text Block]
Voluntary change in accounting policy
Voluntary Change Accounting Policy.
Debt Securities, Available-for-Sale, Premium on Purchased Options [Policy Text Block]
AFS debt securities
Schedule of Estimated Life of Assets [Table Text Block]
Schedule of estimated useful lives for significant asset classes
Schedule of Estimated Life of Assets
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Fair value of financial assets and financial liabilities carried on recurring basis
Schedule of Quantitative and qualitative Information Regarding Significant Unobservable Inputs and Assumptions [Table Text Block]
Schedule of quantitative and qualitative information regarding significant unobservable inputs and assumptions for certain level 3 financial instruments
Tabular disclosure of quantitative and qualitative information about the inputs used in the fair value measurement of assets and liabilities. This disclosure may include, but is not limited to, the fair value of the asset and the liability, valuation technique used to measure fair value, the inputs used to measure fair value, the ranges of the inputs, and the weighted averages of the inputs.
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table Text Block]
Increases and decreases of Level 3 assets and liabilities measured at fair value on recurring basis unrealized and realized gain/losses included in revenue
Fair Value Level 3 Assets and Liabilities Measured on Recurring Basis, Unrealized Gains Losses [Table Text Block]
Fair value, level 3 assets and liabilities measured on recurring basis, unrealized gains (losses)
Tabular disclosure of unrealized gains and losses recognized for the period relating to those financial instruments which were classified as Level 3 and that were still held by at the relevant consolidated balance sheet date. A description of where those unrealized gains or losses are reported in the statement of income or the statement of financial position may also be disclosed.
Schedule of Information of Investments Net Asset Value Per Share [Table Text Block]
Information on investments where net asset value per share is calculated
Schedule of Information of Investments Net Asset Value Per Share
Fair Value, Concentration of Risk [Table Text Block]
Geographic allocations of trading assets related to government, agency, municipal securities
Fair Value, by Balance Sheet Grouping [Table Text Block]
Carrying values, fair values and classification within the fair value hierarchy for certain classes of financial instrument
Schedule of Impact of changes in its own creditworthiness on certain financial liabilities [Table Text Block]
Schedule of impact of changes in its own creditworthiness on certain financial liabilities
Schedule of Impact of changes in its own creditworthiness on certain financial liabilities
Fair Value Option, Disclosures [Table Text Block]
Gains (losses) due to changes in fair value for financial instruments measured at fair value using fair value option
Investments Classified by Contractual Maturity Date [Table Text Block]
Equity securities subject to contractual sale restrictions
Concentration of Exposures to Credit Risk in Otc Derivatives [Table Text Block]
Significant concentration of exposures to credit risk in OTC derivatives
Disclosure of Concentrations of credit risk in OTC derivatives with financial institutions.
Volume of Derivative Activity in Statement of Financial Position [Table Text Block]
Volume of derivative activity in statement of financial position
Disclosure of the volume of derivative activity. Discloses notional and fair value amount of derivatives. All amounts are disclosed on a gross basis, prior to counterparty netting of derivative assets and liabilities and cash collateral netting against net derivatives.
Schedule of Derivative Amounts Included Consolidated Statements of Income [Table Text Block]
Derivative amounts included in consolidated statements of income
Schedule of derivative amounts included consolidated statements of income
Fair Value Hedges [Table Text Block]
Fair value hedges
The table presents amounts included in the consolidated statements of income related to derivatives designated as fair value hedges by type of underlying derivative contract and the nature of the hedged item.
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]
Net investment hedges
Disclosure of Credit Derivatives [Table Text Block]
Written credit derivatives and purchased credit protection
Schedule of Written Credit Derivatives by External Credit Rating of Underlying Asset [Table Text Block]
Written credit derivatives by external credit rating of underlying asset
Schedule of written credit derivatives by external credit rating of underlying asset
Schedule of offsetting of derivative instruments and related collateral amounts [Table Text Block]
Offsetting of derivatives instruments and related collateral amounts
Schedule of offsetting of derivative instruments and related collateral amounts
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
Schedule of carrying value hedged items
Transfer of Financial Assets Accounted for as Sales [Table Text Block]
Relevant transactions outstanding
Disaggregation of Revenue [Table Text Block]
Revenues by types of service
Contract with Customer, Asset and Liability [Table Text Block]
Customer contract receivables, customer contract assets and customer contract liabilities
Disaggregation Of Brokerage Commissions Revenue [Table Text Block]
Schedule of Disaggregation of Brokerage Commissions Revenue
Disaggregation of brokerage commissions revenue.
Disaggregation Of Investment Banking Revenue [Table Text Block]
Schedule of Disaggregation of Investment Banking Revenue
Disaggregation of investment banking revenue.
Disaggregation Of Asset Management Fees And Custody Fee [Table Text Block]
Schedule of Disaggregation of Asset Management Fees and Custody Fee
Disaggregation of asset management fees and custody fee.
Schedule of Fair Value of Securities Received as Collateral Securities Borrowed and The Portion Been Sold or Repledged [Table Text Block]
Fair value of securities received as collateral available to sell or repledge
Schedule of fair value of securities received as collateral securities borrowed and the portion been sold or re-pledged
Schedule of Firm Owned Securities to Collateralize Agreements and Other Secured Financings [Table Text Block]
Assets owned, pledged as collateral
Schedule of firm owned securities to collateralize agreements and other secured financings
Schedule of Assets Subject to Lien [Table Text Block]
Assets subject to lien
Schedule of assets subject to Lien
Schedule of offsetting of the transactions in the consolidated balance sheets [Table Text Block]
Offsetting of the transactions in the consolidated balance sheets
Schedule of offsetting of the transactions in the consolidated balance sheets
Schedule of Securities Financing Transactions [Table Text Block]
Maturity analysis of repurchase agreements and securities lending transactions
Schedule of Financial Instruments Owned and Pledged as Collateral [Table Text Block]
Securities transferred in repurchase agreements and securities lending transactions
Debt Securities, Available-for-Sale [Table Text Block]
Summary of AFS debt securities
Disclosure In Tabular Form Of Fair Value Debt Securities Available For Sale Contractual Maturity [Table Text Block]
Summary of AFS debt securities categorized by remaining contractual maturity
Disclosure in tabular form of fair value debt securities available for sale contractual maturity.
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block]
Summary of AFS debt securities in an unrealized loss position
Schedule of Fair Value of Retained Interests [Table Text Block]
Fair value of retained interests
Schedule of fair value of retained interests
Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block]
Type and carrying value of financial assets
Schedule of Variable Interest Entities [Table Text Block]
Classification of consolidated VIEs' assets and liabilities
Schedule of Carrying Amount of Assets and Liabilities of Unconsolidated Variable Interest Entities [Table Text Block]
Carrying amount of assets and liabilities of unconsolidated VIEs
Schedule of carrying amount of assets and liabilities of unconsolidated variable interest entities
Summary of Loans Receivable Reported within Loans Receivable or Investments in and Advances to Affiliated Companies [Table Text Block]
Summary of loans receivable reported within loans receivable or investments in and advances to affiliated companies
Summary of loans receivable reported within loans receivable or investments in and advances to affiliated companies
Accounts Receivable, Allowance for Credit Loss [Table Text Block]
Changes in allowance for doubtful accounts
Financing Receivable Credit Quality Indicators [Table Text Block]
Analysis of each class of loans not carried at fair value using internal ratings or equivalent credit quality indicators
Schedule of Property Subject to or Available for Operating Lease [Table Text Block]
Types of assets which Nomura leases under operating leases
Lessor, Operating Leases [Text Block]
Schedule of future minimum lease payments to be received on noncancelable operating leases
Lessee, Operating Lease, Liability, Maturity [Table Text Block]
Schedule of Lessee operating lease liability maturity
Lease, Cost [Table Text Block]
Lease expense
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]
Cash payments made by Nomura as lessee
Schedule Of Weighted Average Discount Rate And Weighted Average Remaining Lease Term For Operating Leases [Table Text Block]
Weighted-average discount rate used to measure lease liabilities and weighted-average remaining lease term
Tabular disclosure of weighted-average discount rate used to measure lease liabilities and weighted-average remaining lease term.
Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block]
Business combination, recognized asset acquired and liability assumed
Summary Of Consideration Net Of Cash Acquired
Summary of consideration net of cash acquired
Summary of consideration net of cash acquired.
Business Combination, Pro Forma Information [Table Text Block]
Business combination, pro forma information
Schedule of Other Assets and Other Liabilities [Table Text Block]
Schedule of Other assets-Other and Other liabilities
Schedule of Goodwill [Table Text Block]
Schedule of changes in goodwill within Other assets-Other
Schedule of Finite-Lived Intangible Assets [Table Text Block]
Schedule of finite-lived intangible assets by type
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
Estimated amortization expenses for next five years
Schedule of Change in Asset Retirement Obligation [Table Text Block]
Schedule of change in asset retirement obligation
Property, Plant and Equipment [Table Text Block]
Schedule of Breakdown of Office buildings, land, equipment and facilities
Deposits, Foreign Noninterest-Bearing and Interest-Bearing Combined, Alternative [Abstract]
Deposit Liabilities, Type [Table Text Block]
Summary of Deposit Liabilities
Time Deposit Maturities [Table Text Block]
Schedule of Balance of Time Deposits and Certificates of Deposit
Schedule of Debt [Table Text Block]
Short-term and long-term borrowings
Schedule of Long Term Debt Instruments [Table Text Block]
Long-term borrowings
Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer. It also includes Long-term bonds and notes issued by consolidated VIEs which entity is primary beneficiary.
Schedule of Effective Weighted Average Interest Rates of Borrowings [Table Text Block]
Effective weighted-average interest rates of borrowings
Schedule of effective weighted average interest rates of borrowings
Schedule of Maturities of Long-term Debt [Table Text Block]
Maturities of long-term borrowings
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Summary of amounts and numbers used in calculation of net income attributable to NHI shareholders per share (basic and diluted)
Schedule of Net Benefit Costs [Table Text Block]
Net periodic benefit cost for defined benefit plans
Schedule of Net Funded Status [Table Text Block]
Reconciliation of changes in projected benefit obligation and fair value of plan assets
Schedule of Accumulated Benefit Obligations and Projected Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block]
Projected benefit obligation, accumulated benefit obligation and fair value of plan assets for pension plans with ABO and PBO in excess of plan assets
Tabular disclosure of accumulated benefit obligations, projected benefit obligations and fair values of plan assets of pension plans and/or other employee benefit plans where the accumulated benefit obligation and the projected benefit obligations in excess of the fair value of plan assets.
Schedule of Net Periodic Benefit Cost Not yet Recognized [Table Text Block]
Amounts in accumulated other comprehensive income, pre-tax, that have not yet been recognized as components of net periodic benefit cost
Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized over Next Fiscal Year [Table Text Block]
Amounts in accumulated other comprehensive income, pre-tax, expected to be recognized as components of net periodic benefit cost over next fiscal year
Schedule of Accumulated and Projected Benefit Obligations [Table Text Block]
Schedule of weighted-average assumptions used to determine PBO
Schedule of Assumptions Used [Table Text Block]
Weighted-average assumptions used to determine net periodic benefit costs
Schedule of Changes in Fair Value of Plan Assets [Table Text Block]
Information about plan assets at fair value
Schedule of Level 3 Inputs Utilized to Determine Fair Value of Plan Assets [Table Text Block]
Information about plan assets for which Level 3 inputs are utilized to determine fair value
Schedule of level 3 inputs utilized to determine the fair value of plan assets
Schedule of Expected Benefit Payments [Table Text Block]
Expected benefit payments
Schedule of Share Based Compensation Equity Linked Award Plans Activity [Table Text Block]
Activity related to NSU and CSU awards
Tabular disclosure of the number and weighted-average grant date fair value per share for equity linked award plans that were outstanding at the beginning and end of the year, granted, vested, and forfeited during the year.
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]
Activity relating to RSU awards
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Components of income tax expense
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Effective income tax rate reflected in consolidated statements of income
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Details of deferred tax assets and liabilities
Summary of Valuation Allowance [Table Text Block]
Changes in valuation allowance for deferred tax assets
Summary of Income Tax Examinations [Table Text Block]
Summarizes major tax jurisdictions subject to examination
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
Schedule of unrecognized tax benefits
Schedule of Income Taxes Paid [Table Text Block]
Schedule of income taxes paid
Schedule of income taxes paid
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Changes in accumulated other comprehensive income (loss)
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]
Reclassifications out of accumulated other comprehensive income (loss)
Schedule of Shares of Common Stock Outstanding [Table Text Block]
Changes in shares of common stock outstanding
Schedule of shares of common stock outstanding
Summary of Annual Financial Information for Affiliated Company and Other Equity Method Investee [Table Text Block]
Summary of financial information for signifiant affiliated companies
Summary of annual financial information for affiliated company and other equity method investee
Summary of Balances and Transactions with Affiliated Companies and Other Equity Method Investees [Table Text Block]
Summary of balances and transactions with affiliated companies and other equity-method investees
Summary of balances and transactions with affiliated companies and other equity-method investees
Aggregate Carrying Amount and Fair Value of Investments in Affiliated Companies and Other Equity Method Investees [Table Text Block]
Summary of aggregate carrying amount and fair value of investments in affiliated companies and other equity-method investees
Aggregate carrying amount and fair value of investments in affiliated companies and other equity-method investees
Summary of Equity in Earnings of Equity-method Investees and Dividends from Equity-method Investees [Table Text Block]
Summary of equity in earnings of equity-method investees and dividends from equity-method investees
Tabular disclosure of equity in earnings of equity-method investees and dividends from equity-method investees.
Schedule of Credit and Investment Commitments and Commitments to Purchase Aircraft Commitments Outstanding [Table Text Block]
Commitments outstanding
Schedule of credit and investment commitments and commitments to purchase aircraft commitments outstanding
Schedule of Maturities of Commitment [Table Text Block]
Maturity schedule of commitments
Schedule of maturities of commitment
Information on Guarantees [Table Text Block]
Information on derivative contracts and standby letters of credit and other guarantees
Information on derivative contracts and standby letters of credit and other guarantees
Schedule of Maturity Information of Guarantees [Table Text Block]
Maturity information on derivative contracts and standby letters of credit and other guarantees
Maturity information on derivative contracts and standby letters of credit and other guarantees
Unrecorded Unconditional Purchase Obligations Disclosure [Table Text Block]
Maturity schedule of purchase obligations
Schedule of Major Components of Income Loss Before Income Taxes in Other [Table Text Block]
Major components of income before income taxes in "Other"
Schedule of major components of income (loss) before income taxes in "Other"
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]
Reconciliation of combined business segments' results included in preceding table to reported net revenue, non-interest expenses and income before income taxes
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
Geographic allocation of net revenue and income (loss) before income taxes from operations by geographic areas, and long-lived assets
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Business segments' results
Accounting Policy [Table]
Accounting Policy [Table]
Accounting Policy [Table]
Statistical Measurement [Axis]
Range [Axis]
Statistical Measurement [Domain]
Range [Domain]
Maximum [Member]
Maximum [Member]
Minimum [Member]
Minimum [Member]
Limited Partnership [Member]
Limited partnership [Member]
Limited Partnership [Member]
Investment, Name [Axis]
Equity Method Investee, Name [Axis]
Investment, Name [Domain]
Equity Method Investee, Name [Domain]
Equity Investments [Member]
Equity investments [Member]
Accounting Policy [Line Items]
Accounting Policy [Line Items]
Accounting Policy [Line Items]
Equity Method Investment, Ownership Percentage
Ownership percentage
Number of Reportable Segments
Number of business segments
Income Statement Location [Axis]
Income Statement Location [Domain]
Adjustments for New Accounting Pronouncements [Axis]
Type of Adoption [Domain]
Adjustments for Change in Accounting Principle [Axis]
Adjustments for Change in Accounting Principle [Domain]
Unusula Risk [Axis]
Unusula Risk [Axis]
Unusula Risk [Domain]
Unusula Risk [Domain]
Revision of Prior Period [Axis]
Revision of Prior Period [Domain]
Long Lived Assets Held-for-sale by Asset Type [Axis]
Long Lived Assets Held-for-sale, Name [Domain]
Property, Plant and Equipment [Table]
Schedule of Property, Plant and Equipment [Table]
Long-Lived Tangible Asset [Axis]
Long-Lived Tangible Asset [Domain]
Building [Member]
Office buildings [Member]
Equipment And Facilities [Member]
Equipment and facilities [Member]
Equipment And Facilities [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life
Estimated useful lives for significant assets, in years
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Computer Software, Intangible Asset [Member]
Software [Member]
Fair Value, Recurring and Nonrecurring [Table]
Derivative Instrument [Axis]
Derivative Instrument [Axis]
Derivative Contract [Domain]
Derivative Contract [Domain]
Counterparty and Cash Collateral Netting [Member]
Counterparty and Cash Collateral Netting [Member]
Financial Instrument [Axis]
Financial Instrument [Axis]
Financial Instruments [Domain]
Types of Financial Instruments [Domain]
Debt Security, Government, Non-US [Member]
Foreign government, agency and municipal securities [Member]
Corporate Debt Securities [Member]
Bank and corporate debt securities [Member]
Commercial Mortgage Backed Securities [Member]
Commercial mortgage-backed securities ("CMBS") [Member]
Residential Mortgage Backed Securities [Member]
Residential mortgage-backed securities ("RMBS") [Member]
Collateralized Debt Obligations [Member]
Collateralized debt obligations ("CDOs") and other [Member]
Investment Trust Funds and Other [Member]
Investment trust funds and other [Member]
Investment Trust Funds and Other [Member]
Private Equity And Debt Investments [Member]
Private equity and debt investments [Member]
Private equity and debt investments [Member]
Private Equity And Debt Investments [Member].
Japanese Agency And Municipal Debt Securities [Member]
Japanese agency and municipal securities [Member]
Japanese Agency And Municipal Debt Securities [Member]
Bank and Corporate Debt Securities and Loans for Trading Purpose [Member]
Bank and corporate debt securities and loans for trading purposes [Member]
Bank and Corporate Debt Securities and Loans for Trading Purpose
Real Estate Backed Securities [Member]
Real estate-backed securities [Member]
Real Estate Backed Securities [Member]
Non Trading Debt Securities [Member]
Non-trading debt securities [Member]
Non-trading debt securities [Member]
Non-Trading debt Securities [Member]
Non Trading Debt Securities [Member]
Other [Member]
Other [Member]
Other assets [Member]
The aggregate carrying amounts, as of the balance sheet date, of assets not separately disclosed in the balance sheet.
Japanese Government Debt Securities [Member]
Japanese government securities [Member]
Japanese Government Debt Securities [Member]
Equity Contract [Member]
Equity contracts [Member]
Interest Rate Contract [Member]
Interest rate contracts [Member]
Credit Risk Contract [Member]
Credit contracts [Member]
Foreign Exchange Contract [Member]
Foreign exchange contracts [Member]
Other Contract [Member]
Other contracts [Member]
Other contracts [Member]
Fair Value Hierarchy and NAV [Axis]
Fair Value, Hierarchy [Axis]
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV [Domain]
Fair Value, Inputs, Level 3 [Member]
Level 3 [Member]
Fair Value, Inputs, Level 1 [Member]
Level 1 [Member]
Fair Value, Inputs, Level 2 [Member]
Level 2 [Member]
Measurement Frequency [Axis]
Fair Value, Measurement Frequency [Domain]
Fair Value, Measurements, Recurring [Member]
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value measurements
Assets, Fair Value Disclosure [Abstract]
Assets:
Derivative Asset, Fair Value, Gross Asset
Derivative assets
Gross fair value of derivative assets
Derivative assets, Fair value
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset
Netting
Less: Amounts offset in the consolidated balance sheets
Trading assets and private equity and debt investments
Fair value of trading assets and private equity investments
Receivables, Fair Value Disclosure
Loans and receivables
Assets, Fair Value Disclosure
Total Assets
Cash Instruments And Derivatives Assets
Subtotal, Assets
Trading assets and private equity investments and Derivatives assets.
Liabilities, Fair Value Disclosure [Abstract]
Liabilities:
Derivative Liability, Fair Value, Gross Liability
Derivative liabilities
Derivative liabilities, Fair value
Gross derivative liabilities arising from the transactions at reporting dates
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset
Netting
Less: Amounts offset in the consolidated balance sheets
Financial and Nonfinancial Liabilities, Fair Value Disclosure
Total Liabilities
Cash Instruments And Derivatives Liabilities
Subtotal, Liabilities
Cash instruments and derivatives liabilities.
Payables and Deposits Fair Value Disclosure
Payables and deposits
This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents payables and deposits as of the balance sheet date.
Other Liabilities, Fair Value Disclosure
Other liabilities
Mortgage Backed Securities [Axis]
Mortgage Backed Securities [axis]
Mortgage Backed Securities [Domain]
Mortgage Backed Securities [Domain]
Issued Guaranteed by Government Sponsored Entity [Member]
Issued/Guaranteed by government sponsored entity [Member]
Issued/Guaranteed by government sponsored entity.
Other Residential Mortgagebacked Securities [Member]
Other [Member]
Other residential mortgage-backed securities.
Valuation Approach and Technique [Axis]
Valuation Technique [Axis]
Valuation Approach and Technique [Domain]
Valuation Technique [Domain]
Net Asset Value Valuation Technique [Member]
Net asset value per share [Member]
Net asset value used to measure fair value.
Listed Equity [Member]
Listed equity securities [Member]
Listed Equity [Member]
Unlisted Equity [Member]
Unlisted equity securities [Member]
Unlisted Equity [Member]
Fair Value, by Balance Sheet Grouping [Table]
Fair Value, by Balance Sheet Grouping [Table]
Government Agency And Municipal Securities [Member]
Government, agency and municipal securities [Member]
Japanese government, agency and municipal securities [Member]
Government, agency and municipal Securities [Member]
American Century Companies, Inc. [Member]
American Century Companies, Inc.
Asset and Liability, Class [Axis]
Information by class of assets and liabilities
Fair Value by Asset and Liability, Class [Domain]
Fair value by asset and liability class
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value, balance sheet grouping, financial statement captions [Line Items]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Fair Value, Option, Aggregate Differences, Loans and Long-term Receivables
Differences between the fair value of the aggregate unpaid principal balance (which is contractually principally protected) of loans and receivables, more (less) than the principal balance of such loans and receivables
Fair Value, Option, Aggregate Differences, Long-term Debt Instruments
Differences between the fair value of the aggregate unpaid principal balance (which is contractually principally protected) of short-term borrowings and long-term borrowings more (less) than the principal balance of such short-term borrowings and long-term borrowings
Concentration Risk Percentage
Concentrations of credit risk, percentage
Concentration risk percentage.
Economic Interest, Percentage
Percentage of economic interest
Economic Interest, Percentage
Amount Of Discount Or Liquidity Adjustment To The Exchange Price Of Listed Equity Security Traded In Inactive Markets
Amount of discount or liquidity adjustment to the exchange price of a listed equity security traded in inactive markets
Amount of discount or liquidity adjustment to the exchange price of a listed equity security traded in inactive markets in case the exchange price is not considered to be an appropriate representation of fair value.
Equity Method Investments
Equity method Investments
Equity Method Investment, Other-than-Temporary Impairment
Equity method investment, other-than-temporary impairment
Asset Class [Axis]
Asset Class [Domain]
Assets [Domain]
Unexpected Event [Axis]
Unexpected Event.
Unexpected Event [Domain]
Unexpected Event.
Quantitative Information About Significant Unobservable Inputs [Table]
Schedule of the inputs used in the fair value measurement of assets and liabilities. This disclosure may include, but is not limited to, the fair value of the asset and the liability, valuation technique used to measure fair value, the inputs used to measure fair value, the ranges of the inputs, and the weighted averages of the inputs.
Weighted Average [Member]
Trading Assets and Private Equity Investments [Member]
Trading assets and private equity and debt investments [Member]
Trading assets and private equity and debt investments [Member]
Trading Assets and Private Equity Investments [Member]
Loans Receivable [Member]
Loans and receivables [Member]
Loans [Member]
Investments and Other Assets Other [Member]
Other [Member]
Other assets [Member]
Investments and Other Assets Other [Member]
Short-term Debt [Member]
Short-term borrowings [Member]
Long-term Debt [Member]
Long-term borrowings [Member]
Long-term borrowings [Member]
Collateralized Agreements [Member]
Collateralized agreements [Member]
Collateralized Agreements [Member]
Payables and Deposits [Member]
Payable and deposits [Member]
Payables and deposits [Member]
Payables and Deposits [Member]
Other Liabilities Other [Member]
Other liabilities [Member]
Other Liabilities Other [Member]
Valuation Technique, Discounted Cash Flow [Member]
DCF [Member]
Valuation, Market Approach [Member]
Market multiples [Member]
Valuation Technique, Option Pricing Model [Member]
Option models [Member]
Discount Cash Flows Valuation Technique And Option Models [Member]
DCF / Option models [Member]
Discount Cash Flows Valuation Technique And Option Models [Member]
Measurement Input Type [Axis]
Measurement Input Type [Domain]
Measurement Input, Expected Dividend Payment [Member]
Dividend yield [Member]
Measurement Input, Risk Free Interest Rate [Member]
Interest rates [Member]
Measurement Input, Repo Rate [Member]
Repo rate [Member]
Measurement input using repo rate
Measurement Input, Weighted Average Cost of Capital [Member]
WACC [Member]
Measurement input using weighted average cost of capital
Measurement Input, EBITDA Multiple [Member]
EV/EBITDA ratios [Member]
Measurement Input, Yields [Member]
Yields [Member]
Measurement input using yields
Measurement Input, Long-term Revenue Growth Rate [Member]
Growth rates [Member]
Measurement Input, Price Earnings Ratio [Member]
PE Ratios [Member]
Measurement input using price earnings ratio.
Measurement Input, Credit Spread [Member]
Credit spreads [Member]
Measurement Input, Discount Rate [Member]
Liquidity discounts [Member]
Measurement Input, Recovery Rate [Member]
Recovery rates [Member]
Measurement input using recovery rate.
Measurement Input, Prepayment Rate [Member]
Prepayment rates [Member]
Measurement Input, Default Rate [Member]
Default probabilities [Member]
Measurement Input, Loss Severity [Member]
Loss severities [Member]
Measurement Input, Foreign Exchange Volatility [Member]
Volatilities [Member]
Measurement input using rate at which foreign exchange will increase (decrease) for given set of returns.
Measurement Input, Price Volatility [Member]
Volatilities [Member]
Measurement Input, Correlation [Member]
Correlations [Member]
Measurement input using correlation.
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Quantitative information about significant unobservable inputs [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value
Fair Value, Financial Instrument, Assets
Beginning balance, Assets
Ending balance, Assets
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value
Fair Value, Financial Instrument, Liabilities
Beginning balance, Liabilities
Ending balance, Liabilities
Debt Securities, Trading, Measurement Input
Valuation inputs, Trading assets and private equity and debt investments
Derivative Asset (Liability) Net, Measurement Input
Valuation inputs, Derivatives, net
Loans and receivables, Measurement Input
Valuation inputs, Loans and receivables
Value of input used to measure loans and receivables.
Collateralized agreements, Measurement Input
Valuation inputs, Collateralized agreements
Value of input used to measure collateralized agreements.
Other assets, Measurement Input
Valuation inputs, Other assets
Value of input used to measure other assets.
Short-term borrowings, Measurement Input
Valuation inputs, Short-term borrowings
Value of input used to measure short-term borrowings.
Long-term Debt, Measurement Input
Valuation inputs, Long-term borrowings
Fair Value Measurements, Sensitivity Analysis, Description
Impact of increases in significant unobservable valuation inputs
Interrelationships Between Inputs
Interrelationships between valuation inputs
Consideration of the interrelationships between significant unobservable valuation inputs.
Payables Deposits Measurement Input
Valuation inputs, Payables and deposits
Payables deposits measurement input.
Other Liabilities Measurement Input
Valuation inputs, Other liabilities
Other liabilities measurement input.
Fair Value Level 3 Assets And Liabilities Measured On Recurring Basis Unrealized Gains Losses [Table]
Fair value level 3 assets and liabilities measured on recurring basis [Table]
Fair value Level 3 assets and liabilities measured on recurring basis [Table]
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Fair value, assets and liabilities measured on recurring basis, unobservable input reconciliation [Line items]
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings
Total gains (losses) recognized in net income, Assets
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)
Total gains (losses) recognized in other comprehensive income, Assets
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases Issuances
Purchases/ issues, Assets
Fair value measurement with unobservable inputs reconciliation recurring basis asset purchases issuances.
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales
Sales/ redemptions, Assets
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements
Settlements, Assets
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Foreign Exchange Movements
Foreign exchange movements, Assets
Fair value measurement with unobservable inputs reconciliation recurring basis asset foreign exchange movements.
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3
Transfers into Level 3, Assets
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3
Transfers out of Level 3, Assets
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Liabilities [Abstract]
Consolidated VIE liabilities
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings
Total gains (losses) recognized in net income, Liabilities
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss)
Total gains (losses) recognized in other comprehensive income, Liabilities
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liabilities Purchases Issuances
Purchases/ issues, Liabilities
Purchase or Issuance that have taken place during the period in relation to liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy. This item also includes increases in trading liability positions.
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Sales Redemptions
Sales/ redemptions, Liabilities
Sales that have taken place during the period in relation to liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy. This item also includes decreases in trading liability positions.
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements
Settlements, Liabilities
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liabilities Foreign Exchange Movements
Foreign exchange movements, Liabilities
Fair value measurement with unobservable inputs reconciliation recurring basis asset foreign exchange movements.
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3
Transfers into Level 3, Liabilities
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3
Transfers out of Level 3, Liabilities
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Liability, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration]
Derivative [Member]
Derivatives, net [Member]
Trading Liabilities [Member]
Trading liabilities [Member]
Subtotal Assets [Member]
Subtotal [Member]
The sum of Trading assets and private equity investments and Derivatives
Fair Value, Assets Measured on Recurring Basis, Change in Unrealized Gain (Loss)
Unrealized gains/(losses), Assets
Fair Value, Liabilities Measured on Recurring Basis, Change in Unrealized Gain (Loss)
Unrealized gains/(losses), Liabilities
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Fair Value, Liability, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax
Unrealized gains and losses from financial liability in Other comprehensive income (loss)
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Investment Redemption, Description
Redemption frequency (if currently eligible)
Investments Fair Value
Fair value
Fair value that is generally determined using NAV per share.
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments
Unfunded commitments
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Investment Redemption, Notice Period
Redemption notice
Investment Type [Axis]
Investment Type [Axis]
Investments [Domain]
Investment Type Categorization [Domain]
Hedge Funds [Member]
Hedge funds [Member]
Venture Capital Funds [Member]
Venture capital funds [Member]
Private Equity Funds and Private Credit Funds [Member]
Private equity funds and private credit funds [Member]
Private equity funds and private credit funds.
Real Estate Funds [Member]
Real estate funds [Member]
Trading Assets, Excluding Debt and Equity Securities [Member]
Trading assets [Member]
Assets [Member]
Total [Member]
Liability Class [Axis]
Fair Value by Liability Class [Domain]
Liabilities [Domain]
Collateralized Financing [Member]
Collateralized financing [Member]
Collateralized Financing [Member]
Other Liabilities Measured at Fair Value Using The Fair Value Option [Member]
Other liabilities [Member]
Other liabilities measured at fair value using the fair value option [Member]
Liability [Member]
Total [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value, Option, Changes in Fair Value, Gain (Loss)
Gains/(Losses)
Other Comprehensive Income (Loss), Own Credit Adjustments, before Tax, Billion
Changes recognized as a credit (debit) to other comprehensive income
Amount before tax, after reclassification adjustments, of appreciation (loss) in value of Own credit, Billion
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, Reclassification Adjustment from AOCI for Derecognition, before Tax
Credit (debit) amounts reclassified to earnings
Unrealized Gain (Loss) on Own Credit Adjustment, Pretax, Accumulated Other Comprehensive Income (Loss)
Cumulative credit balance recognized in accumulated other comprehensive income
Amount of unrealized gain (loss) related to Own credit adjustment, which was recorded in accumulated other comprehensive income.
Fair Value, Concentration of Risk [Table]
Fair Value, Concentration of Risk [Table]
Geographical [Axis]
Geographical [Axis]
Geographical [Domain]
Segment, Geographical [Domain]
JAPAN
Japan [Member]
UNITED STATES
U.S. [Member]
US
European Union [Member]
EU & U.K. [Member]
Other Countries, Fair Value Concentration Credit Risk Geographical [Member]
Other [Member]
This category includes information about bonds issued by other governments, state and municipality and their agencies.
Concentration of Credit or Market Risk [Axis]
Concentration of Credit or Market Risk [Axis]
Fair Value, Concentration of Risk, Disclosure Items [Domain]
Fair Value, Concentration of Risk, Disclosure Items [Domain]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value, concentration of credit risk [Line items]
Fair Value, Concentration of Risk, Trading Account Assets
Trading assets
Estimated fair value of financial instruments not carried at fair value [Table]
Estimated fair value of financial instruments not carried at fair value [Table]
Fair value disclosures related to financial assets (as defined) and financial liabilities (as defined) contained in the entity's balance sheet. Disclosures contained in this table include the carrying (reported) amount, the portion of the financial instrument (as defined) at fair value, portion at other than fair value, estimate of fair value.
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Assets:
Cash and Cash Equivalents, Fair Value Disclosure
Cash and cash equivalents
Time Deposits Fair Value Disclosure
Time deposits
This item represents time deposits.
Deposits With Stock Exchanges And Other Segregated Cash Fair Value Disclosure
Deposits with stock exchanges and other segregated cash
This item represents deposits with stock exchanges and other segregated cash.
Securities Purchased Under Agreements to Resell Fair Value Disclosure
Securities purchased under agreements to resell
This item represents securities purchased under agreements to resell.
Loans Receivable, Fair Value Disclosure
Loans receivable
Securities Borrowed, Fair Value Disclosure
Securities borrowed
Assets classified as certain financial instrument
Total Assets
Fair value portion of assets classified as certain financial instrument.
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Liabilities:
Securities Loaned Fair Value Disclosure
Securities loaned
This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. The amount as of the balance sheet date of securities loaned to other broker dealers, typically used by such parties to cover short sales, secured by cash or other securities furnished by such parties until the borrowing is closed.
Short-term Debt, Fair Value
Short-term borrowings
Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure
Securities sold under agreements to repurchase
Long-term Debt, Fair Value
Long-term borrowings
Financial Liabilities Fair Value Disclosure
Total Liabilities
Secured Debt, Other
Other secured borrowings
Measurement Basis [Axis]
Portion at Fair Value Measurement [Member]
Reported Value Measurement [Member]
Carrying value [Member]
Estimate of Fair Value Measurement [Member]
Fair value [Member]
Maturity [Axis]
Years to maturity [Domain]
Maturity period of the year after the reporting date.
Not later than one year [Member]
Less than 1 year [Member]
Less than 1 year [Member]
Later Than One Year And Not Later Than Five Years [Member]
1 to 5 years [Member]
Later Than Five Years [Member]
More than 5 years [Member]
More than 5 years [Member]
Equity Security, FV-NI, Contractual Sale Restriction
Restriction on transfer
Equity Securities Fv Ni Consent From Third Parties
Consent from third parties
Equity securities FV NI consent from third parties.
Equity Securities Fv Ni Other
Others
Equity securities FV NI other.
Equity Securities, FV-NI, Restricted
Total
Derivative [Table]
Derivative [Table]
Derivative [Line Items]
Derivative [Line Items]
Impact of Master Netting Arrangements
Impact of master netting agreements
Impact of Master Netting Arrangements
Impact of Collateral Exposure to Derivatives
Impact of collateral
The amount of collateral that has been offset against net derivative position.
Net Exposure to Credit Risk from Derivatives
Net exposure to credit risk
Net Exposure to Credit Risk from Derivatives
OTC Derivatives with Financial Institutions [Member]
Financial institutions [Member]
OTC derivatives with financial Institutions.
Hedging Designation [Axis]
Hedging Designation [Domain]
Not Designated as Hedging Instrument [Member]
Derivatives used for trading and non-trading purposes [Member]
Designated as Hedging Instrument [Member]
Derivatives designated as formal fair value or net investment accounting hedges [Member]
Derivatives designated as hedging instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount
Total notional
Derivative Asset [Abstract]
Derivative assets
Additional amounts not offset in the consolidated balance sheets, Assets [Abstract]
Less: Additional amounts not offset in the consolidated balance sheets
Additional amounts not offset in the consolidated balance sheets, Assets
Derivative, Collateral, Obligation to Return Securities
Financial instruments and non-cash collateral
Derivative Asset, Fair Value, Amount Not Offset Against Collateral
Gross derivative balances, Derivative assets
Derivative Asset
Total net amounts reported on the face of the consolidated balance sheets
Derivatives
Derivative Asset, Fair Value, Amount Offset Against Collateral
Net amount
Derivative Asset, Statement of Financial Position [Extensible Enumeration]
Derivative Asset, Statement of Financial Position [Extensible Enumeration]
Derivative Liability [Abstract]
Derivative liabilities
Additional amounts not offset in the consolidated balance sheets, Liabilities [Abstract]
Less: Additional amounts not offset in the consolidated balance sheets [Abstract]
Additional amounts not offset in the consolidated balance sheets, Liabilities
Derivative, Collateral, Right to Reclaim Securities
Financial instruments and non-cash collateral
Derivative Liability, Fair Value, Amount Not Offset Against Collateral
Gross derivative balances, Derivative liabilities
Derivative Liability
Total net amounts reported on the face of the consolidated balance sheets
Derivatives
Derivative Liability, Fair Value, Amount Offset Against Collateral
Net amount
Derivative Liability, Statement of Financial Position [Extensible Enumeration]
Derivative Liability, Statement of Financial Position [Extensible Enumeration]
Transaction Type [Axis]
Transaction [Domain]
Exchange Traded [Member]
Exchange-traded [Member]
Over the Counter [Member]
OTC settled bilaterally [Member]
Exchange Cleared [Member]
OTC centrally-cleared [Member]
Derivative Liability, Collateral, Right to Reclaim Cash, Offset
Cash collateral receivables against net derivative liabilities
Derivative Asset, Collateral, Obligation to Return Cash, Offset
Cash collateral payables against net derivative assets
Derivative Asset, Not Subject to Master Netting Arrangement
Gross balances of derivative assets, not subject to enforceable master netting arrangements or similar agreements
Derivative Liability, Not Subject to Master Netting Arrangement
Gross balances of derivative liabilities, not subject to enforceable master netting arrangements or similar agreements
Derivative, Collateral, Right to Reclaim Cash, Amount Not Offset Against Net Derivatives
Cash collateral receivables, not being offset against net derivatives
Amount of right to receive cash collateral under master netting arrangements that have not been offset against net derivatives.
Derivative, Collateral, Obligation to Return Cash, Amount Not Offset Against Net Derivatives
Cash collateral payables, not being offset against net derivatives
Amount of obligation to return cash collateral under master netting arrangements that have not been offset against net derivatives.
Gain (Loss) on Derivative Instruments, Net, Pretax
Gains (losses) on derivatives used for trading and non-trading purposes
Hedged Liability, Fair Value Hedge
Carrying amount of the hedged liabilities
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)
Cumulative gains of fair value hedging adjustment included in the carrying amount of the hedged liabilities
Hedged Liability, Discontinued Fair Value Hedge, Cumulative Increase (Decrease)
Cumulative amount of fair value hedging adjustment remaining for the liabilities which hedge accounting has been discontinued
Hedged Liability, Statement of Financial Position [Extensible Enumeration]
Hedged Liability, Statement of Financial Position [Extensible Enumeration]
Balance Sheets Location [Axis]
Balance sheets location.
Balance Sheets Location [Domain]
Balance sheets location.
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Fair Value Hedges Recognized in Earnings
Gains (losses) on fair value hedges recognized
Hedging Relationship [Axis]
Hedging Relationship [Domain]
Fair Value Hedging [Member]
Hedged Items [Member]
Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), before Reclassification and Tax
Gains (losses) from derivatives designated as net investment hedges
Net Investment Hedging [Member]
Hedging instruments [Member]
Derivative Instruments, Gain (Loss) [Table]
Event [Axis]
Event [Domain]
Fair Value Of Derivative Liability Credit Risk Related To Contingent Features
Derivative liability position with credit-risk-related contingent features
The aggregate fair value of all derivative instruments with credit-risk-related contingent features that are in a liability position.
Derivative Liability Position With Related Collateral Pledged
Collateral pledged for derivative instruments with credit-risk-related contingent features that are in a liability position
Amount of collateral pledged for the derivative instruments with credit-risk-related contingent features that are in a liability position.
Additional Collateral, Aggregate Fair Value
Additional collateral required to be posted, aggregate fair value
Schedule of Credit Derivatives [Table]
Schedule of Credit Derivatives [Table]
Credit Derivatives Contract Type [Axis]
Credit Derivatives Contract Type [Axis]
Credit Derivatives Contract Type [Domain]
Credit Derivatives Contract Type [Domain]
Credit Default Swap [Member]
Single-name credit default swaps [Member]
Credit Default Indices [Member]
Credit default swap indices [Member]
Credit Default Indices [Member]
Other Credit Risk Related Portfolio Products [Member]
Other credit risk related portfolio products [Member]
Other credit risk-related portfolio products [Member]
Other Credit Risk Related Portfolio Products [Member]
CreditRisk Related Options And Swaptions [Member]
Credit-risk related options and swaptions [Member]
Credit risk-related options and swaptions [Member]
Credit-Risk related options and swaptions [Member].
Credit Derivatives [Line Items]
Credit Derivatives [Line Items]
Carrying Value Asset Liability Of Credit Derivatives
Carrying value (Asset) / Liability
Carrying value (Asset) / Liability of credit derivatives
Purchased Credit Protection on Notional
Notional, Purchased credit protection
Purchased credit protection on notional.
Credit Derivative, Maximum Exposure, Undiscounted
Maximum potential payout / Notional
Later than one year and not later than three years [Member]
1 to 3 years [Member]
Later than three years and not later than five years [Member]
3 to 5 years [Member]
Credit Rating, Standard & Poor's [Axis]
Credit rating [Axis]
External Credit Rating, Standard & Poor's [Domain]
Credit rating [Domain]
Standard & Poor's, AAA Rating [Member]
AAA [Member]
Standard & Poor's, AA Rating [Member]
AA [Member]
Standard & Poor's, A Rating [Member]
A [Member]
Standard & Poor's, BBB Rating [Member]
BBB [Member]
Standard & Poor's, BB Rating [Member]
BB [Member]
Other Rating [Member]
Other [Member]
Other Rating, including credit derivatives where the credit rating of the underlying reference asset is below investment grade or where a rating is unavailable.
Transfer of Financial Assets Accounted for as Sales [Table]
Sale and Total Return Swap [Member]
Transfer of Financial Assets Accounted for as Sales [Line Items]
Transfer of Financial Assets Accounted for as Sales, Cash Proceeds Received for Assets Derecognized, Amount
Gross cash proceeds received at transfer dates
Transfer of Financial Assets Accounted for as Sales, Amount Derecognized
Fair value of transferred securities at transfer dates
Transfer of Financial Assets Accounted for as Sales, Fair Value of Derecognized Assets
Fair value of transferred securities at reporting dates
Disaggregation of Revenue [Abstract]
Other Revenue from Contract with Customer
Other revenue
Other revenue from contract with customer, excluding assessed tax
Revenue from Contract with Customer, Excluding Assessed Tax
Total
Disaggregation Of Brokerage Commissions Revenue [Abstract]
Schedule of Product Information [Table]
Product and Service [Axis]
Product and Service [Domain]
Brokerage Commissions [Member]
Brokerage commissions [Member]
Brokerage Commissions [Member].
Other Commissions [Member]
Other commissions [Member]
Other Commissions [Member].
Commissions For Distribution Of Investment Trust [Member]
Commissions for distribution of investment trust [Member]
Commissions for distribution of investment trust.
Product Information [Line Items]
Disaggregation Of Investment Banking Revenue [Abstract]
Equity underwriting and distribution fees
Equity underwriting and distribution fees
Equity underwriting and distribution fees.
Debt Underwriting And Distribution Fees
Debt underwriting and distribution fees
Debt underwriting and distribution fees.
Financial Advisory Fees
Financial advisory fees
Financial advisory fees.
Other Fess
Other fees
Other fess.
Disaggregation Of Asset Management Fees And Custody Fee [Abstract]
Asset Management Fees
Asset management fees
Asset Management fees.
Administration Fees
Administration fees
Administration fees.
Custodial Fees
Custodial fees
Custodial fees.
Contract with Customer, Asset and Liability [Abstract]
Accounts Receivable, Net
Customer contract receivables
Contract with Customer, Liability
Contract liabilities
Disaggregation of Revenue [Table]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax
Revenue from performance obligations satisfied in previous periods
Revenue, Remaining Performance Obligation, Amount
Remaining performance obligations, Transaction price
Securities Purchased under Agreements to Resell, Amount Offset Against Collateral [Abstract]
Reverse repurchase agreements
Additional amounts not offset in the consolidated balance sheets, Reverse repurchase agreements [Abstract]
Less: Additional amounts not offset in the consolidated balance sheets [Abstract]
Additional amounts not offset in the consolidated balance sheets, Reverse repurchase agreements
Securities Purchased under Agreements to Resell, Collateral, Obligation to Return Securities
Financial instruments and non-cash collateral
Securities Purchased under Agreements to Resell, Collateral, Obligation to Return Cash
Cash collateral
Securities Purchased under Agreements to Resell, Gross
Total gross balance
Securities Purchased under Agreements to Resell, Liability
Less: Amounts offset in the consolidated balance sheets
Securities Purchased under Agreements to Resell, Offsetting
Total net amounts as reported on the face of the consolidated balance sheets
Amount, after the effects of master netting arrangements, of funds outstanding loaned in the form of a security resale agreement between the entity and another party for the purchase and resale of identical or substantially the same securities at a date certain for a specified price. Includes purchases of participations in pools of securities that are subject to a resale agreement, assets not subject to a master netting arrangement
Securities Purchased under Agreements to Resell, Amount Offset Against Collateral
Net amount
Securities Borrowed, Amount Offset Against Collateral [Abstract]
Securities borrowing transactions
Additional amounts not offset in the consolidated balance sheets, Securities borrowing transactions [Abstract]
Less: Additional amounts not offset in the consolidated balance sheets [Abstract]
Additional amounts not offset in the consolidated balance sheets, Securities borrowing transactions
Securities Borrowed, Collateral, Obligation to Return Securities
Financial instruments and non-cash collateral
Securities Borrowed, Collateral, Obligation to Return Cash
Cash collateral
Securities Borrowed, Gross
Total gross balance
Securities Borrowed, Liability
Less: Amounts offset in the consolidated balance sheets
Securities Borrowed, Offsetting
Total net amounts as reported on the face of the consolidated balance sheets
Amount, after the effects of master netting arrangements, of securities borrowed from entities in exchange for collateral. Includes assets not subject to a master netting arrangement
Securities Borrowed, Amount Offset Against Collateral
Net amount
Securities Sold under Agreements to Repurchase, Amount Offset Against Collateral [Abstract]
Repurchase agreements
Additional amounts not offset in the consolidated balance sheets, Repurchase agreements [Abstract]
Less: Additional amounts not offset in the consolidated balance sheets [Abstract]
Additional amounts not offset in the consolidated balance sheets, Repurchase agreements
Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities
Financial instruments and non-cash collateral
Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Cash, Return Value
Cash collateral
Amount of right to receive cash collateral under master netting arrangements that have not been offset against securities sold under agreement to repurchase, Return value.
Securities Sold under Agreements to Repurchase, Gross
Total gross balance
Repurchase agreements
Securities Sold under Agreements to Repurchase, Asset
Less: Amounts offset in the consolidated balance sheets
Securities Sold under Agreements to Repurchase, Offsetting
Total net amounts as reported on the face of the consolidated balance sheets
Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement.
Securities Sold under Agreements to Repurchase, Amount Offset Against Collateral
Net amount
Securities Loaned, Amount Offset Against Collateral [Abstract]
Securities lending transactions
Additional amounts not offset in the consolidated balance sheets, Securities lending transactions [Abstract]
Less: Additional amounts not offset in the consolidated balance sheets [Abstract]
Additional amounts not offset in the consolidated balance sheets, Securities lending transactions
Securities Loaned, Collateral, Right to Reclaim Securities
Financial instruments and non-cash collateral
Securities Loaned, Collateral, Right to Reclaim Cash
Cash collateral
Securities Loaned, Gross
Total gross balance
Securities lending transactions
Securities Loaned, Asset
Less: Amounts offset in the consolidated balance sheets
Securities Loaned, Offsetting
Total net amounts as reported on the face of the consolidated balance sheets
Amount, after the effects of master netting arrangements, of securities loaned to entities in exchange for collateral. Includes liabilities not subject to a master netting arrangement.
Securities Loaned, Amount Offset Against Collateral
Net amount
Securities Purchased under Agreements to Resell, Not Subject to Master Netting Arrangement
Gross balance of reverse repurchase agreements which were not transacted under master netting agreements or are documented under master netting agreements for which Nomura has not yet obtained sufficient evidence of enforceability
Securities Sold under Agreements to Repurchase, Not Subject to Master Netting Arrangement
Gross balance of repurchase agreements which were not transacted under master netting agreements or are documented under master netting agreements for which Nomura has not yet obtained sufficient evidence of enforceability
Securities Borrowed, Not Subject to Master Netting Arrangement
Gross balance of securities borrowing transactions which were not transacted under master netting agreements or are documented under master netting agreements for which Nomura has not yet obtained sufficient evidence of enforceability
Securities Loaned, Not Subject to Master Netting Arrangement
Gross balance of securities lending transactions which were not transacted under master netting agreements or are documented under master netting agreements for which Nomura has not yet obtained sufficient evidence of enforceability
Offsetting Liabilities [Table]
Repurchase Agreements and Similar Transactions, Maturity Periods [Axis]
Repurchase Agreements and Similar Transactions, Maturity Periods [Domain]
Maturity Less than 30 Days [Member]
Up to 30 days [Member]
Maturity 30 to 90 Days [Member]
30 – 90 days [Member]
Maturity 90 Days to 1 Year [Member]
90 days – 1 year [Member]
Maturity period that is more than 89 days but fewer than 1 year from the reporting date for repurchase agreements and similar transactions, for example, but not limited to, securities lending arrangements.
Maturity Greater than 1 Year [Member]
Greater than 1 year [Member]
Maturity period of over 1 year from the reporting date for repurchase agreements and similar transactions, for example, but not limited to, securities lending arrangements.
Maturity Overnight and on Demand [Member]
Overnight and open [Member]
Offsetting Liabilities [Line Items]
Securities Loaned and Securities Sold under Agreement to Repurchase, Gross Including Not Subject to Master Netting Arrangement
Total
Financial Instruments Owned and Pledged as Collateral [Table]
Financial Instruments Owned and Pledged as Collateral [Table]
Equities And Convertible Bonds [Member]
Equities and convertible securities [Member]
Equities and convertible bonds [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial Instruments Owned and Pledged as Collateral [Line Items]
U.S. government sponsored agency mortgage pass through securities and collateralized mortgage obligations
U.S. government sponsored agency mortgage pass through securities and collateralized mortgage obligations
US government sponsored agency mortgage pass-through securities and collateralized mortgage obligations
Fair Value of Securities Received as Collateral that Can be Resold or Repledged
The fair value of collateral received
Fair Value of Securities Received as Collateral that Have Been Resold or Repledged
The portion of the above received that has been sold (as reported as short sales within Trading liabilities in the consolidated balance sheets) or repledged
Government And Government Agency Securities [Member]
Government and government agency securities [Member]
Debt securities issued by a national, local, or municipal government
Trading Securities Pledged without Allowing Right to Sell or Repledge
Trading assets
Items pledged as security within trading assets without recognition sale or repeated collateral rights.
Pledged Non Trading Debt Securities
Non-trading debt securities
Non-trading debt securities owned, which have been pledged as collateral, primarily to stock exchanges and clearing organizations, without allowing the secured party the right to sell or pledge them.
Pledged Financial Instruments Not Separately Reported Investments In And Advances To Affiliated Companies
Investments in and advances to affiliated companies
Pledged financial instruments not separately reported investments in and advances to affiliated companies.
Collateralized Transactions Assets Subject to Lien [Table]
Collateralized Transactions Assets Subject to Lien [Table]
Collateralized Transactions Assets Subject To Lien [Table]
Collateralized Transactions Assets Subject to Lien [Line Items]
Collateralized Transactions Assets Subject to Lien [Line Items]
Collateralized Transactions Assets Subject to Lien [Line Items]
Carrying Amount Of Assets Subject To Lien
Assets subject to lien, amount
Carrying amount of assets subject to lien. These assets are primarily pledged for secured borrowings.
Property, Plant and Equipment [Member]
Office buildings, land, equipment and facilities [Member]
Trading Assets And Private Equity And Debt Investments [Member]
Trading assets and private equity and debt investments [Member]
Trading assets and private equity and debt investments.
Investments In And Advances To Affiliated Companies [Member]
Investments in and advances to affiliated companies [Member]
Investments in and advances to affiliated companies.
Debt Securities, Available-for-Sale [Table]
Debt Securities, Available-for-Sale [Line Items]
Debt Securities, Available-for-Sale, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract]
AFS debt securities
Debt Securities, Available-for-Sale, Amortized Cost, after Allowance for Credit Loss
Amortized cost
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax
Unrealized gains
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax
Unrealized losses
Debt Securities, Available-for-Sale
Fair value
Fair value, Total
Available-for-Sale Securities, Debt Maturities [Abstract]
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five
Amortized cost,1 year to 5 years
Debt Securities, Available-for-Sale, Amortized Cost
Amortized cost, Total
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five
Fair value, 1 year to 5 years
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One
Amortized cost,less than 1 year
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One
Fair value, less than 1 year
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table]
Debt Securities Available For Sale Unrealized Loss Position Fair Value [Line Items]
Debt securities available for sale unrealized loss position fair value.
Debt Securities, Available-for-Sale, Unrealized Loss Position [Abstract]
Fair value
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months
Less than 12 months
Debt Securities, Available-for-Sale, Unrealized Loss Position
Total
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer
12 months or longer
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Unrealized losses
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss
Less than 12 months
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss
Total
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss
12 months or longer
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Number of Positions [Abstract]
Number of debt securities
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions
Total
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions
Less than 12 months
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions
12 months or longer
Equity Securities without Readily Determinable Fair Value [Table]
Equity Securities without Readily Determinable Fair Value [Line Items]
Non Trading equity Investments Elected Fair Value Measurement Alternative
Non-trading equity investments elected for the fair value measurement alternative
Non-trading equity investments elected for the fair value measurement alternative.
Equity Securities, FV-NI, Unrealized Gain (Loss)
Unrealized gains (losses) on equity securities owned by non-BD entities that are not investment companies
Non BD Entities Other Than Investment Companies [Member]
Non-BD entities other than investment companies [Member]
Non BD entities other than investment companies.
Schedule of Variable Interest Entities [Table]
Schedule of Variable Interest Entities [Table]
Variable Interest Entity [Line Items]
Variable Interest Entity [Line Items]
Proceeds from Securitizations of Loans Held-for-investment
Cash proceeds from SPEs in new securitizations
Debt Securities Issued By Special Purpose Entities Initial Fair Value
Debt securities issued by SPEs with an initial fair value
Debt Securities Issued by Special Purpose Entities Initial Fair Value
Proceeds from Sale of Debt Securities, Available-for-Sale
Cash inflows from third parties on the sale of debt securities
Cumulative Balance of Financial Assets Transferred To Spes
Cumulative balance of financial assets transferred to SPEs
Cumulative Balance of Financial Assets Transferred to Spes
Cash Inflow Outflow From Special Purpose Entities On Retained Interests Continuously Held By Entity
Cash inflows from the SPEs on the retained interests
Cash inflow (outflow) from SPEs on retained interests continuously held by entity.
Transferor's Interests in Transferred Financial Assets, Fair Value
Retained interests
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale, Gain (Loss) on Sale
Securitization or asset-backed financing arrangement, financial asset for which transfer is accounted as sale, gain on sale
Schedule of Fair Value Retained Interests [Table]
Schedule of fair value of retained interests [Table]
Tabular disclosure of fair value of retained interests which Nomura has continuing involvement in SPEs and their classification in the fair value hierarchy, categorized by the type of transferred assets.
Collateralized Mortgage Backed Securities [Member]
CMBS and RMBS [Member]
CMBS and RMBS [Member]
Schedule of Fair Value of Retained Interests [Line Items]
Schedule of fair value of retained interests [Line Items]
Line items represent financial concepts included in a table. These concepts are used to disclosure of fair value of retained interests which Nomura has continuing involvement in SPEs and their classification in the fair value hierarchy, categorized by the type of transferred assets.
Retained Interest, Fair Value Disclosure
Fair value of retained interests
External Credit Rating by Grouping [Axis]
External Credit Rating by Grouping [Domain]
External Credit Rating, Investment Grade [Member]
Investment grade [Member]
External Credit Rating, Non Investment Grade [Member]
Other [Member]
Financial Assets and Financial Liabilities [Table]
Financial Assets and Financial Liabilities [Table]
Financial Assets and Financial Liabilities [Table]
Financial Assets and Financial Liabilities [Line Items]
Financial Assets and Financial Liabilities [Line Items]
Financial Assets and Financial Liabilities [Line Items]
Loans included within Trading assets
Loans for trading purposes
Loans included within Trading assets, carrying value
Trading Assets and Long-term Loans Receivable
Total
Trading Assets and Long-term Loans Receivable
Loans Held For Trading Purposes
Loans receivable
Loans held for trading purposes.
Japanese Government Securities
Japanese government securities
Debt (bills, notes or bonds) that are issued by the government of Japan.
Qualifying Special Purpose Entity, Classification [Axis]
Qualifying special purpose entity, classification [Axis]
Qualifying Special Purpose Entity, Classification [Axis]
Qualifying Special Purpose Entity by Classification [Domain]
Qualifying special purpose entity, classification [Domain]
Qualifying Special Purpose Entity by Classification [Domain]
Transferred to SPEs [Member]
Transferred to SPEs [Member]
Transferred to SPEs [Member]
Trading Assets and Liabilities Textual [Abstract]
Trading assets
Trading Assets And Liabilities Textual [Abstract]
Trading Equity
Equities
Trading equity.
Debt Securities, Trading
Debt securities
Mortgage-backed Securities Available-for-sale, Fair Value Disclosure
CMBS and RMBS
Private Equity And Debt Investments
Private equity and debt investments
Private equity and debt investments
Trading Liabilities [Abstract]
Trading liabilities
Trading Liabilities [Abstract]
Borrowing [Abstract]
Borrowings
Borrowings [Abstract]
Variable Interest Entity, Consolidated, Carrying Amount, Other Liabilities
Other
The net carrying amount of the consolidated Variable Interest Entity's other liabilities included in the reporting entity's statement of financial position.
Debt Securities [Member]
Debt securities [Member]
Other Asset [Member]
Other [Member]
Other Asset [Member]
Commitments to Extend Credit [Member]
Commitments to extend credit and other guarantees [Member]
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount
Maximum exposure to loss to unconsolidated VIEs
Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity, Not Primary Beneficiary [Member]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table]
Schedule of Loans Receivable [Table]
Affiliated Entity [Member]
Advances to affiliated companies [Member]
Financing Receivable Portfolio Segment [Axis]
Loans Receivable Portfolio Segment [Axis]
Financing Receivable Portfolio Segment [Domain]
Loans receivable [Domain]
Loans at Banks [Member]
Loans at banks [Member]
Loans at Banks [Member]
Short Term Secured Margin Loans [Member]
Short-term secured margin loans [Member]
Short Term Secured Margin Loans [Member]
Commercial Portfolio Segment [Member]
Corporate loans [Member]
Schedule of Financing Receivables [Line Items]
Schedule of Financing Receivables [Line Items]
Schedule of Financing Receivables [Line Items]
Loans Receivable Carried At Amortized Cost
Carried at amortized cost
Loans Receivable Carried at Amortized Cost
Accounts Receivable Allowance For Credit Loss [Table]
Schedule of Financing Receivable, Allowance for Credit Losses [Table]
Accounts Receivable Allowance For Credit Loss Table.
Accounts Receivable Allowance For Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Losses [Line Items]
Accounts Receivable Allowance For Credit Loss.
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowances for current expected credit losses [Roll Forward]
Allowances For Loan And Lease Losses Adjustments Net
Other, Allowances for current expected credit losses
Allowances for loan and lease losses adjustments net.
Financing Receivable, Allowance for Credit Loss
Opening balance, Allowances for current expected credit losses
Ending balance, Allowances for current expected credit losses
Provision for Loan, Lease, and Other Losses
Provision for credit losses, Allowances for current expected credit losses
Financing Receivable, Allowance for Credit Loss, Writeoff
Write-offs, Allowances for current expected credit losses
Allowances Against Receivables Other Than Loans RollForward [Abstract]
Allowances against receivables other than loans [Roll Forward]
Allowances against receivables other than loans [Abstract]
Allowance Against Other Than Loans Receivables
Opening balance, Allowances against receivables other than loans
Ending balance, Allowances against receivables other than loans
Allowance against other than loans receivables.
Allowance Against Other Than Loans Receivables, Provision for Losses
Provision for credit losses, Allowances against receivables other than loans
Allowance against other than loans receivables, Provision for losses.
Allowance Against Other Than Loans Receivables, Charge Offs
Write-offs, Allowances against receivables other than loans
Allowance against other than loans receivables, Charge offs.
Allowance Against Other Than Loans Receivables, Other
Other, Allowances against receivables other than loans
Allowance against other than loans receivables, Other
Allowance for Doubtful Accounts Receivable [Roll Forward]
Total allowances for current expected credit losses [Roll Forward]
Provision for Doubtful Accounts
Provision for credit losses, Total allowances for current expected credit losses
Accounts Receivable, Allowance for Credit Loss, Writeoff
Write-offs, Total allowances for current expected credit losses
Allowance for Doubtful Accounts, Other
Other, Total allowances for current expected credit losses
Total allowance for doubtful accounts that reflects the net amount of other additions and reductions in the reserve for credit losses.
Financing Receivable, Allowance for Credit Loss [Table]
Schedule of Financing Receivable, Allowance for Credit Losses [Table]
Financing Receivable, Allowance for Credit Losses [Line Items]
Interest Receivable
Accrued interest receivable
Class of Financing Receivable [Axis]
Class of Financing Receivable [Domain]
Credit Rating, Fitch [Axis]
External Credit Rating, Fitch [Domain]
Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table]
Schedule of financing receivable, recorded investment, credit quality indicator [Table]
Receivable Type [Axis]
Receivable Type [Axis]
Receivable [Domain]
Loans receivable [Domain]
Advances To Affiliated Companies [Member]
Advances to affiliated companies [Member]
Advances To Affiliated Companies [Member]
Secured Loans At Banks [Member]
Secured loans at banks [Member]
Secured Loans at Banks [Member]
Unsecured Loans at Banks [Member]
Unsecured loans at banks [Member]
Unsecured Loans at Banks [Member]
Secured Corporate Loans [Member]
Secured corporate loans [Member]
Secured Corporate Loans [Member]
Unsecured Corporate Loans [Member]
Unsecured corporate loans [Member]
Unsecured Corporate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, recorded investment [Line items]
Loans Receivable Gross
Total loans
Total of gross amount of loans held-for-sale and held-in-portfolio.
Financing Receivable, Year One, Originated, Current Fiscal Year
Current year
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year
Year before current year
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year
Two years before current year
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year
Three years before current year
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year
Four years before current year
Financing Receivable, Originated, More than Five Years before Current Fiscal Year
More than five year before current year
Financing Receivable, Revolving
Revolving
Internal Credit Assessment [Axis]
Internal Credit Assessment [Domain]
AAA BBB [Member]
AAA-BBB [Member]
Internally Assigned Grade, AAA BBB
BB CCC [Member]
BB-CCC [Member]
Internally Assigned Grade, BB CCC
CC D [Member]
CC-D [Member]
Internally Assigned Grade, CC D
Others [Member]
Others [Member]
Internally Assigned Grade, Others
Internally Assigned Grade, Total [Member]
Total [Member]
Property Subject to or Available for Operating Lease, by Major Property Class [Table]
Operating Leases [Table]
Major Property Class [Axis]
Major Property Class [Axis]
Major Property Class [Domain]
Major Property Class [Domain]
Land and Building [Member]
Real estate [Member]
Air Transportation Equipment [Member]
Aircraft [Member]
Property Subject to or Available for Operating Lease [Line Items]
Operating Lease [Line Items]
Property Subject to or Available for Operating Lease, Gross
Cost
Property Subject to or Available for Operating Lease, Accumulated Depreciation
Accumulated depreciation
Property Subject to or Available for Operating Lease, Net
Net carrying amount
Lease Income
Lease income
Operating Lease, Right-of-Use Asset
Right-of-use asset for operating leases
Operating lease ROU assets
Operating lease right of use asset
Lessor, Operating Lease, Payment to be Received, Year One
Minimum lease payments to be received, Less than 1 year
Lessor, Operating Lease, Payment to be Received, Year Two
Minimum lease payments to be received, 1 to 2 years
Lessor, Operating Lease, Payment to be Received, Year Three
Minimum lease payments to be received, 2 to 3 years
Lessor, Operating Lease, Payment to be Received, Year Four
Minimum lease payments to be received, 3 to 4 years
Lessor, Operating Lease, Payment to be Received, Year Five
Minimum lease payments to be received, 4 to 5 years
Lessor, Operating Lease, Payment to be Received, after Year Five
Minimum lease payments to be received, More than 5 years
Lessor, Operating Lease, Payments to be Received
Minimum lease payments to be received, Total
Leases [Table]
Leases [Line Items]
Lease, Cost [Abstract]
Lease expense:
Operating Lease, Cost
Operating lease costs
Other Income and Expenses [Abstract]
Other income and expenses:
Sublease Income
Gross sublease income
Operating Lease, Payments
Cash flows for operating leases
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months
Less than 1 year
Lessee, Operating Lease, Liability, Payments, Due Year Two
1 to 2 years
Lessee, Operating Lease, Liability, Payments, Due Year Three
2 to 3 years
Lessee, Operating Lease, Liability, Payments, Due Year Four
3 to 4 years
Lessee, Operating Lease, Liability, Payments, Due Year Five
4 to 5 years
Lessee, Operating Lease, Liability, Payments, Due after Year Five
More than 5 years
Lessee, Operating Lease, Liability, Payments, Due
Total undiscounted lease payments
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Less: Impact of discounting
Operating Lease, Liability
Lease liabilities as reported in the consolidated balance sheets
Operating lease liabilities
Operating Lease, Liability, Statement of Financial Position [Extensible List]
Operating Lease, Liability, Statement of Financial Position [Extensible List]
Operating Lease, Weighted Average Discount Rate, Percent
Weighted-average discount rate used to measure lease liabilities
Operating Lease, Weighted Average Remaining Lease Term
Weighted-average remaining lease term
Business Combination [Table]
Business Combination [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired
Percentage of equity interests acquired
Business Combination, Price of Acquisition, Expected
Purchase price
Business Combination, Separately Recognized Transaction, Acquisition-Related Cost, Expensed
Acquisition-related costs
Business Combination, Separately Recognized Transaction, Acquisition-Related Cost, Incurred
Overall acquisition-related costs
Business Combination Separately Recognized Transaction Acquisition Related Cost Expensed Statement of Income or Comprehensive Income Extensible Enumeration Not Disclosed Flag
Business Combination Separately Recognized Transaction Acquisition Related Cost Expensed Statement of Income or Comprehensive Income Extensible Enumeration Not Disclosed Flag.
Business Combination, Acquiree's Revenue since Acquisition Date, Actual
Increase in assets under management
Business Combination, Acquiree's Earnings (Loss) since Acquisition Date, Actual
Net income contributed after the acquisition date
Business Acquisitions Pro Forma Acquisition Related Costs
Business acquisitions pro forma acquisition related costs
Business Acquisitions Pro Forma Acquisition Related Costs.
Business Acquisitions Pro Forma Amortization Of Intangible Assets
Business acquisitions pro forma amortization of intangible assets
Business acquisitions pro forma amortization of intangible assets.
Business Acquisitions Pro Forma Employment Related Expenses
Business acquisitions pro forma employment related expenses
Business acquisitions pro forma employment related expenses.
Business Combination [Axis]
Business Combination [Domain]
Macquarie Management Holdings Inc [Member]
Macquarie.
Restructuring Type [Axis]
Type of Restructuring [Domain]
Employee Severance [Member]
Payments to Acquire Businesses, Gross
Cash paid
Cash Acquired from Acquisition
Cash acquired
Business Combination Replacement Of Sharebased Payment Awards
Replacement of share-based payment awards
Business combination replacement of sharebased payment awards.
Business Combination, Consideration Transferred
Total cash (net of cash acquired) and other consideration
Customer Relationships [Member]
Client relationships [Member]
Goodwill
Goodwill
Net carrying amount, Beginning of year
Net carrying amount, End of year
Business Combination, Recognized Asset Acquired, Investment in Debt and Equity Securities, Current
Investments in equity securities for other than operating purposes
Business Combination, Recognized Asset Acquired, Other Asset, Current
Other assets
Business Combination, Recognized Asset Acquired, Deferred Tax Asset
Deferred tax assets
Business Combination, Recognized Liability Assumed, Other Liability, Current
Other liabilities
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Employee Liabilities
Employee Liabilities
Business combination recognized identifiable assets acquired and liabilities assumed employee liabilities.
Business Combination, Recognized Liability Assumed, Deferred Tax Liability
Deferred tax liabilities
Deferred tax liabilities
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill
Total consideration, net of cash acquired
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived
Finite-lived intangible assets
Business Combination, Pro Forma Information, Pro Forma Revenue
Total revenue
Business Combination, Pro Forma Information, Pro Forma Income (Loss), after Tax
Net income attributable to Nomura
Land [Member]
Land [Member]
Computer Equipment [Member]
Software [Member]
Construction in Progress [Member]
Construction in progress [Member]
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]
Other assets-Other / Other liabilities [Abstract]
Other assets-Other / Other liabilities
Schedule of Finite-Lived Intangible Assets [Table]
Schedule of Finite-Lived Intangible Assets [Table]
Information processing and communications [Member]
Information processing and communications [Member]
Occupancy and related depreciation [Member]
Occupancy and related depreciation [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets
Amortization expenses
Other Indefinite-lived Intangible Assets
Indefinite-lived intangibles
Finite-Lived Intangible Assets, Net
Intangible assets with a net carrying value
Net carrying amount
Finite-Lived Intangible Asset, Weighted-Average Period before Renewal or Extension
Weighted average amortization period
Other Assets [Abstract]
Other assets—Other:
Securities Received as Collateral
Securities received as collateral
Goodwill And Other Intangible Assets
Goodwill and other intangible assets
Goodwill and Other Intangible Assets
Deferred Income Tax Assets, Net
Net deferred tax assets
Net deferred tax assets reported within Other assets-Other
Investments In Equity Securities For Other Than Operating Purposes
Investments in equity securities for other than operating purposes
The sum of the carrying amounts of Investments in equity securities for other than operating purposes including marketable and non-marketable equity securities held for other than trading or operating purposes.
Other Assets, Miscellaneous
Other
Prepaid Expense
Prepaid expenses
Deposit Assets
Deposit receivables
Other Liabilities [Abstract]
Other liabilities:
Obligation to Return Securities Received as Collateral
Obligation to return securities received as collateral
Accrued Income Taxes, Noncurrent
Accrued income taxes
Other Accrued Expenses and Provisions Other Liabilities
Other accrued expenses and provisions
Other Accrued Expenses and Provisions Other Liabilities
Other Accrued Liabilities
Other
Net Deferred Tax Liabilities Other
Net deferred tax liabilities
Net deferred tax liabilities reported within Other liabilities
Net deferred tax liabilities other.
Other Assets Other and Other Liabilities [Table]
Other Assets Other and Other Liabilities [Table]
Other Assets Other and Other Liabilities [Table]
Other Assets Other and Other Liabilities [Line Items]
Other Assets Other and Other Liabilities [Line Items]
Other Assets Other and Other Liabilities [Line Items]
Loss Contingency Accrual
Liability in respect of outstanding and unsettled investigations
Liability in respect of outstanding and unsettled investigations
Marketable and Non-marketable Securities [Axis]
Marketable and Non-marketable Securities [Axis]
Marketable and Non-marketable Securities [Domain]
Marketable and Non-marketable Securities [Domain]
Balance Sheet Location [Axis]
Balance Sheet Location [Domain]
Other Liabilities [Member]
Other liabilities [Member]
Segments [Axis]
Business Segments [Axis]
Segments [Domain]
Segment [Domain]
Wholesale Segment [Member]
Wholesale [Member]
Wholesale Segment [Member]
Other Segment [Member]
Other [Member]
Investment Management [Member]
Investment Management [Member]
Goodwill [Line Items]
Goodwill, Gross
Gross carrying amount, Beginning of year
Gross carrying amount, End of year
Goodwill, Impaired, Accumulated Impairment Loss
Accumulated Impairment, Beginning of year
Accumulated Impairment, End of year
Goodwill, Impairment Loss
Impairment, Changes during year
Goodwill, Other Increase (Decrease)
Other, Changes during year
Goodwill, Purchase Accounting Adjustments
Acquisition, Changes during year
Goodwill Impairment Loss Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag
Goodwill Impairment Loss Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag.
Finite-Lived Intangible Assets, Gross
Gross carrying amount
Finite-Lived Intangible Assets, Accumulated Amortization
Accumulated amortization
Other Intangible Assets [Member]
Other [Member]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months
2027
Finite-Lived Intangible Assets, Amortization Expense, Year Two
2028
Finite-Lived Intangible Assets, Amortization Expense, Year Three
2029
Finite-Lived Intangible Assets, Amortization Expense, Year Four
2030
Finite-Lived Intangible Assets, Amortization Expense, Year Five
2031
Asset Retirement Obligation
Balance at beginning of year
Balance at end of year
Asset Retirement Obligation, Liabilities Incurred
Provision for the year
Asset Retirement Obligation, Liabilities Settled
Settled during the year
Asset Retirement Obligation, Revision of Estimate
Revisions in estimated cash flows
Deposits, Domestic [Abstract]
Domestic
Noninterest-Bearing Deposit Liabilities, Domestic
Noninterest-bearing deposits
Interest-Bearing Deposit Liabilities, Domestic
Interest-bearing deposits
Deposits, Domestic
Subtotal
Deposits, Foreign [Abstract]
Foreign
Deposits, Foreign
Subtotal
Noninterest-Bearing Deposit Liabilities, Foreign
Noninterest-bearing deposits
Interest-Bearing Deposit Liabilities, Foreign
Interest-bearing deposits
Statistical Disclosure for Banks [Abstract]
Deposit Liability [Table]
Deposit Liability [Line Items]
Time Deposits
Total
Time Deposits, Fiscal Year Maturity [Abstract]
Time Deposit Maturities, Year One
Due in one year or less
Time Deposit Maturities, Year Two
Due after one year through two years
Time Deposit Maturities, Year Three
Due after two years through three years
Time Deposit Maturities, Year Four
Due after three years through four years
Time Deposit Maturities, Year Five
Due after four years through five years
Time Deposit Maturities, after Year Five
Due after five years
Time Deposit Maturities, after Year One
Subtotal
Geographic Distribution [Axis]
Geographic Distribution [Domain]
Geographic Distribution, Domestic [Member]
Domestic
Geographic Distribution, Foreign [Member]
Foreign
Cash and Cash Equivalents [Axis]
Cash and Cash Equivalents [Domain]
Bank Time Deposits [Member]
Time Deposit
Certificates of Deposit [Member]
Certificates of deposit
Deposit Liability, Uninsured
Amounts of uninsured time deposit liabilities
Schedule of Borrowings [Table]
Schedule of Borrowings [Table]
Schedule of Borrowings [Table]
Long-term Debt, Type [Axis]
Long-term Debt, Type [Axis]
Long-term Debt, Type [Domain]
Long-term borrowings [Domain]
Long-term Debt, Type [Domain]
Fixed Rate Obligations [Member]
Fixed-rate obligations [Member]
Fixed Rate Obligations [Member]
Floating Rate Obligations [Member]
Floating-rate obligations [Member]
Floating Rate obligations [Member]
Index Or Equity Linked Obligations [Member]
Index / Equity-linked obligations [Member]
Index Or Equity Linked Obligations [Member]
Schedule of Borrowings [Line Items]
Schedule of Borrowings [Line Items]
Schedule of Borrowings
Short-term Debt [Abstract]
Short-term borrowings:
Commercial Paper
Commercial paper
Broker-Dealer, Bank Loan, Short-term
Bank borrowings
Other Short-term Borrowings
Other
Long-term Borrowings [Abstract]
Long-term borrowings:
Long-term Borrowings [Abstract]
Long Term Borrowings From Banks And Other Financial Institutions
Long-term borrowings from banks and other financial institutions
Carrying value as of the balance sheet date of loans from a bank and other financial institutions with maturities initially due after one year or beyond the operating cycle if longer, excluding current portion.
Bonds And Notes Issued
Bonds and notes issued
Bonds And Notes Issued
Long Term Debt Maturities Repayments Of Principal
Subtotal
Long-term Debt, Maturities, Repayments of Principal
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount
Trading balances of secured borrowings
Debt Instrument [Axis]
Debt Instrument [Axis]
Debt Instrument, Name [Domain]
Debt Instrument, Name [Domain]
Non Japanese Yen Denominated [Member]
Non-Japanese Yen denominated [Member]
Non-Japanese Yen Denominated [Member]
Japanese Yen Denominated [Member]
Japanese Yen denominated [Member]
Japanese Yen Denominated [Member]
Short-term Debt, Type [Axis]
Short-term Debt, Type [Axis]
Short-term Debt, Type [Domain]
Short-term Debt, Type [Domain]
Bonds And Notes Issued [Member]
Bonds and notes issued [Member]
Bonds And Notes Issued [Member]
Long Term Borrowings From Banks And Financial Institutions [Member]
Long-term borrowings from banks and other financial institutions [Member]
Long Term Borrowings From Banks And Financial Institutions [Member]
Secured Debt
Secured borrowings
Debt Issued By The Company
Debt issued by the Company
Including the current and noncurrent portions, aggregate carrying value as of the balance sheet date of debt issued by the company.
Debt Issued By Subsidiaries Guaranteed By Company
Debt issued by subsidiaries—guaranteed by the Company
Debt issued by subsidiaries, Guaranteed By The Company
Debt of Subsidiary, Not Assumed
Debt issued by subsidiaries—not guaranteed by the Company
Debt Instruments Maturity Date Range Start
Long-term borrowings, Maturities start period
Debt Instruments Maturity Date Range Start
Debt Instruments Maturity Date Range End
Long-term borrowings, Maturities end period
Debt Instruments Maturity Date Range End
Unutilized Borrowing Facilities
Unutilized borrowing facilities
Amount of unutilized borrowing facilities under financing arrangement that is available to the entity as of the balance sheet date.
Subordinated Debt
Subordinated borrowings
Debt Instrument, Interest Rate, Effective Percentage
Long-term borrowings, interest rate
Short-term Debt, Weighted Average Interest Rate, at Point in Time
Short-term borrowings
Long-term Debt, Weighted Average Interest Rate, at Point in Time
Long-term borrowings
Long-Term Debt, Maturity, Year One
2027
Long-Term Debt, Maturity, Year Two
2028
Long-Term Debt, Maturity, Year Three
2029
Long-Term Debt, Maturity, Year Four
2030
Long-Term Debt, Maturity, Year Five
2031
Long-Term Debt, Maturity, after Year Five
2032 and thereafter
Net Income (Loss) Attributable to Parent, Diluted
Net income attributable to NHI shareholders
Weighted Average Number of Shares Outstanding, Diluted
Weighted average number of NHI shares outstanding
Weighted Average Number of Shares Outstanding, Basic
Weighted average number of NHI shares outstanding
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Antidilutive stock options and other stock-based compensation plans to purchase
Schedule of Defined Benefit Plans Disclosures [Table]
Schedule of Defined Benefit Plans Disclosures [Table]
Overseas Subsidiaries [Member]
Overseas Subsidiaries [Member]
Overseas Subsidiaries [Member]
Pension Plans Postretirement and Other Employee Benefits [Line Items]
Pension plans, postretirement and other employee benefits [Line items]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Defined Benefit Plan, Plan Assets, Amount
Fair value of plan assets
Fair value of plan assets at beginning of year
Fair value of plan assets at end of year
Number of Years Required to Entitle Payments Upon Termination
Number of years required for payment
Number of years required to entitle payments upon termination.
Percentage of Gains and Losses Relates to Benefit Obligation and Fair Value of Plan Assets
Excess percentage of the greater of the projected benefit obligation or the fair value of plan assets
Percentage of gains and losses relates to benefit obligation and fair value of plan assets.
Defined Benefit Plan, Accumulated Benefit Obligation
Accumulated benefit obligation
Pension Cost (Reversal of Cost)
Contributions to the defined contribution pension plans
Contributions To Overseas Defined Contribution Pension Plans
Contributions to overseas defined contribution pension plans
Contributions to overseas defined contribution pension plans
Cost Of Retiree Health Care Benefit Not Covered Through Retiree Contributions
Health care benefit cost
The amount of health care benefit costs which are equivalent to the required contribution for the period. The cost of retiree health care benefits are not covered through retiree contributions but not reserved for the future cost.
Average remaining service period of active participants
Average remaining service period of active participants
Average remaining service period of active participants in PnYnMnDTnHnMnS format.
Defined Benefit Plan Unrealized And Realized Gains Loss
Amount of unrealized profit (loss) of Level 3 assets
Unrealized and realized gains / loss
Defined Benefit Plan Unrealized and Realized Gains / Loss
Assets for Plan Benefits, Defined Benefit Plan
Recognized asset for pension benefits
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage
Plan assets of domestic plans investments
Defined Benefit Plan, Plan Assets, Category [Axis]
Defined Benefit Plan, Asset Categories [Axis]
Defined Benefit Plan, Plan Assets, Category [Domain]
Pension plan assets [Domain]
Non Japan Plan [Member]
Non-Japanese entities' plans [Member]
Non Japan Plan [Member]
Life Insurance Company General Accounts [Member]
Life insurance company general accounts [Member]
Life Insurance Company General Accounts [Member]
Other investments [Member]
Other investments [Member]
Other assets [Member]
Other Pension Plan Assets [Member]
Variable Rate [Axis]
Variable Rate [Axis]
Variable Rate [Domain]
Variable Rate [Domain]
Defined Benefit Plan, Service Cost
Service cost
Defined Benefit Plan, Interest Cost
Interest cost
Defined Benefit Plan, Expected Return (Loss) on Plan Assets
Expected return on plan assets
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)
Amortization of prior service cost
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)
Net periodic benefit cost
Defined Benefit Plan, Actuarial Gain (Loss), Immediate Recognition as Component in Net Periodic Benefit (Cost) Credit
Amortization of net actuarial losses
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Change in projected benefit obligation:
Defined Benefit Plan, Benefit Obligation
Projected benefit obligation at beginning of year
Projected benefit obligation at end of year
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)
Actuarial gain
Defined Benefit Plan Acquisition And Other
Acquisition, divestitures and other
Defined benefit plan acquisition and other
Defined Benefit Plan, Benefit Obligation, Benefits Paid
Benefits paid
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment
Amendments of pension benefit plans
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Change in plan assets:
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)
Actual return on plan assets
Defined Benefit Plan, Plan Assets, Contributions by Employer
Employer contributions
Defined Benefit Plan, Plan Assets, Benefits Paid
Benefits paid
Defined Benefit Plan, Funded (Unfunded) Status of Plan
Funded status at end of year
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position
Amounts recognized in the consolidated balance sheets
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Abstract]
Plans with ABO in excess of plan assets:
Defined Benefit Plan, Pension Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation
PBO
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Accumulated Benefit Obligation
ABO
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Plan Assets
Fair value of plan assets
Defined Benefit Plan, Pension Plan with Project Benefit Obligation in Excess of Plan Assets [Abstract]
Plans with PBO in excess of plan assets:
Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation
PBO
Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Accumulated Benefit Obligation
ABO
Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Plan Assets
Fair value of plan assets
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax
Net actuarial loss
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax
Net prior service cost
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax
Total
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year
Net actuarial loss
Defined Benefit Plan, Expected Amortization of Prior Service Cost (Credit), Next Fiscal Year
Net prior service cost
Defined Benefit Plan, Expected Amortization, Next Fiscal Year
Total
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate
Discount rate
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase
Rate of increase in compensation levels
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Weighted-Average Interest Crediting Rate
Interest crediting rate
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate
Discount rate
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase
Rate of increase in compensation levels
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets
Expected long-term rate of return on plan assets
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Weighted-Average Interest Crediting Rate
Interest crediting rate
Fair Value, Inputs, Level 1, 2 and 3 [Member]
Fair value [Member]
Private Equity And Pooled Investments [Member]
Private equity and pooled investments [Member]
Private equity and pooled investments which is including corporate type equity investments.
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount
Fair values of certain plan assets
Fair Value Measured at Net Asset Value Per Share [Member]
Amount of net asset value per share as a practical expedient [Member]
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Purchase, Sale, and Settlement
Purchases / sales and other settlement
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months
2027
Defined Benefit Plan, Expected Future Benefit Payment, Year Two
2028
Defined Benefit Plan, Expected Future Benefit Payment, Year Three
2029
Defined Benefit Plan, Expected Future Benefit Payment, Year Four
2030
Defined Benefit Plan, Expected Future Benefit Payment, Year Five
2031
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter
2032-2036
Schedule of Deferred Compensation Arrangement with Individual, Share-based Payments [Table]
Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation [Axis]
Type of Deferred Compensation [Axis]
Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation [Domain]
Stock Acquisition Rights Plan B [Member]
SAR Plan B [Member]
Stock-based compensation awards,Plan B Stock Acquisition Rights ("SARs")
Notional Stock Units and Collared Notional Stock Units [Member]
NSU and CSU [Member]
Stock-based compensation awards,Notional Stock Units ("NSUs") and Collared Notional Stock Units ("CSUs")
Notional Stock Units [Member]
NSU [Member]
NSUs [Member]
Stock-based compensation awards,Notional Stock Units ("NSUs")
Collared Notional Stock Units [Member]
CSU [Member]
CSUs [Member]
Stock-based compensation awards,Collared Notional Stock Units ("CSUs")
Restricted Stock Units (RSUs) [Member]
RSU [Member]
RSU [Member]
Performance Shares [Member]
PSU [Member]
RSU and SAR [Member]
RSU and SAR [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Deferred Compensation Arrangement By Share Based Payment Award Option Outstanding Aggregate Intrinsic Value
Aggregate value, outstanding
The aggregate intrinsic value of options outstanding as of the balance sheet date.
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total
Total unrecognized compensation cost, based on fair value
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
Weighted-average period for recognizing unrecognized compensation cost (in years)
Deferred Compensation Arrangement with Individual, Exercise Price
Exercise price per share
Deferred Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value
Total fair value of awards vested
The total fair value of equity-based awards for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.
Allocated Deferred Compensation Expense
Total compensation expense recognized within Non-interest expenses-Compensation and benefits
Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense
Tax benefits recognized in earnings for compensation expense
Deferred Compensation Arrangement with Individual, Fair Value of Shares Issued
Total grant date fair value
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period
Vesting period
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period
Total number of RSU granded
Extending vesting period
Extending Period in order to meet local regulatory requirements
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Weighted-average grant date fair value per award
Weighted-average grant date fair value per share, Beginning
Weighted-average grant date fair value per share, Ending
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period
Number shares delivered
Deferred Compensation Arrangement By Share Based Payment Award Option Total Intrinsic Value
Total value of units delivered
Deferred compensation arrangement by share based payment award option total intrinsic value.
Total Fair Value Of Awards Vested
Total fair value of awards vested
Total fair value of awards vested.
Share Based Compensation Arrangement By Share Based Payment Award At Percentage Payout Rate
Share based compensation arrangement by share based payment award at percentage payout rate
Share based compensation arrangement by share based payment award at percentage payout rate.
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized
Granted awards
RSUs Allotment Date From The Date Of The Disposal Decision
RSUs allotment date from the date of the disposal decision
RSUs allotment date from the date of the disposal decision.
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number
Outstanding (number of shares), Beginning
Outstanding (number of shares), Ending
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross
Outstanding (number of shares), Granted
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period
Outstanding (number of shares), Forfeited
Share-based Compensation Arrangement by Share-based Payment Award, Options, Other Increases (Decreases) in Period
Outstanding (number of shares), Delivered
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted-average remaining life until expiry (years)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term
Weighted-average remaining life until expiry (years), Outstanding
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted-Average grant date fair value per share
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Weighted-average grant date fair value per share, Granted
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Weighted-average grant date fair value per share, Forfeited
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Delivered, Weighted Average Grant Date Fair Value
Weighted-average grant date fair value per share, Delivered
Weighted average fair value as of the grant date of the shares paid.
Deferred Compensation Arrangement Outstanding Number
Outstanding (number of units), Beginning
Outstanding (number of units), Ending
The number of units reserved for issuance under deferred compensation awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested unites.
Deferred Compensation Arrangement Grants In Period Gross
Outstanding (number of units), Granted
Total number of shares granted during the period.
Deferred Compensation Arrangement Vests In Period Gross
Outstanding (number of units), Vested
Total number of units vested during the period.
Deferred Compensation Arrangement Forfeitures In Period
Outstanding (number of units), Forfeited
The number of units that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the units plan.
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Stock price
Share Price
Stock price, Beginning
Stock price, Ending
Deferred Compensation Arrangement Grants In Period Weighted Average Grant Date Fair Value
Stock price, Granted
The weighted average fair value of nonvested units for which the employer is contingently obligated to pay awards to an employee.
Deferred Compensation Arrangement Vested In Period Weighted Average Grant Date Fair Value
Stock price, Vested
Deferred Compensation Arrangement, Vested in Period, Weighted Average Grant Date Fair Value
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current:
Current Federal Tax Expense (Benefit)
Domestic National Tax, Current
Current Foreign Tax Expense (Benefit)
Foreign, Current
Current Income Tax Expense (Benefit)
Subtotal, Current
Current State and Local Tax Expense (Benefit)
Domestic Local Tax, Current
Current Federal, State and Local, Tax Expense (Benefit)
Domestic, Total, Current
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred:
Deferred Federal Income Tax Expense (Benefit)
Domestic national Tax, Deferred
Deferred Foreign Income Tax Expense (Benefit)
Foreign taxs, Deferred
Deferred State and Local Income Tax Expense (Benefit)
Domestic local Tax, Deferred
Deferred Federal, State and Local, Tax Expense (Benefit)
Domestic, Total, Deferred
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest [Abstract]
Income before income taxes:
Income (Loss) from Continuing Operations before Income Taxes, Domestic
Domestic
Income (Loss) from Continuing Operations before Income Taxes, Foreign
Foreign
Income Tax Expense (Benefit), Continuing Operations, by Jurisdiction [Abstract]
Total Income Tax expense (benefit)
Federal Income Tax Expense (Benefit), Continuing Operations
Domestic national Tax
State and Local Income Tax Expense (Benefit), Continuing Operations
Domestic local Tax
Foreign Income Tax Expense (Benefit), Continuing Operations
Foreign taxes
Income Taxes [Table]
Income Taxes [Table]
Income Taxes [Table]
Tax Reform [Axis]
Tax Reform
Tax Reform [Domain]
Tax Reform
Japanese subsidiaries and Nomura Holdings Inc [Member]
Company and domestic subsidiaries [Member]
Japanese subsidiaries and Nomura Holdings Inc
Subsidiaries [Member]
Income Tax Authority, Name [Axis]
Income Tax Authority, Name [Domain]
National Tax Agency, Japan [Member]
Domestic [Member]
Japan [Member]
Her Majesty's Revenue and Customs (HMRC) [Member]
United Kingdom [Member]
Internal Revenue Service (IRS) [Member]
United States [Member]
Inland Revenue, Hong Kong [Member]
Hong Kong [Member]
Foreign Tax Jurisdiction [Member]
Foreign Tax Authority [Member]
Foreign tax effects [Member]
Foreign Tax [Member]
Income Tax Assesment Period [Axis]
Income tax assesment period [Axis]
Income Tax Assesment Period
Income Tax Assesment Period [Domain]
Income tax assesment period [Domain]
Income Tax Assesment Period [Domain]
Operating Loss Carryforwards Indefinitely [Member]
Indefinitely [Member]
Operating Loss Carryforwards Indefinitely
Initial term, Expiration Period [Member]
Initial term [Member]
Initial term, Expiration Period
Next term, Expiration Period [Member]
Next term [Member]
Next term, Expiration Period
Income Taxes [Line Items]
Income Taxes [Line Items]
Income Taxes [Line Items]
Income tax benefit recognized from operating losses
Income tax benefit recognized from net operating losses
Operating Loss Carryforwards
Operating loss carryforwards
Operating Loss Carryforwards, Expiration Date
Expiration year
Decrease in Unrecognized Tax Benefits is Reasonably Possible
Decrease in unrecognized tax benefits is reasonably possible
Deferred Tax Assets, Net of Valuation Allowance
Additional Deferred Tax Asset Recognized
Total deferred tax assets
Deferred Tax Liabilities, Net
Additional Deferred Tax Liability Recognized
Net deferred tax assets (liabilities)
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount
Valuation allowance release
Net change during the year
Total, Net change during the year
Unrecognized Tax Benefits, Interest on Income Taxes Expense
Tax Credit Carryforward [Axis]
Tax Credit Carryforward, Name [Domain]
Scenario [Axis]
Scenario [Domain]
Effective Income Tax Rate Reconciliation [Table]
Effective Income Tax Rate Reconciliation [Line Items]
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
Income Tax Expense (Benefit), Amount:
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount
Japan local tax, net of national tax effect
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount
Changes in deferred tax valuation allowances
Effective Income Tax Rate Reconciliation, Tax Settlement, Foreign, Amount
Different tax rate applicable to income (loss) of foreign subsidiaries
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount
Other (Amount)
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
Japan national tax rate
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount
Non-taxable income amount
Effective Income Tax Rate Reconciliation, Tax Credit, Amount
Tax credits, amount
Effective Income Tax Rate Reconciliation, Cross-Border, Other, Amount
Unrecognized tax benefit
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount
Other. amount
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount
Stock-based compensation awards, amount
Effective Income Tax Reconciliation Effect Of Cross Border Tax Laws Amount
Effect of cross-border tax laws, amount
Effective income tax reconciliation effect of cross border tax laws amount.
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount
Other jurisdictions
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Income Tax Rate, Percent:
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent
Changes in deferred tax valuation allowances, rate
Taxable Items to Be Added on Financial Profit
Additional taxable income, rate
The sum of the differences between the effective income tax rate and domestic federal statutory income tax rate attributable to the items to be added on financial statement during the period.
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent
Non-deductible expenses, rate
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent
Non-taxable income, rate
Tax Effect of Undistributed Earnings of Foreign Subsidiaries
Tax effect of undistributed earnings of foreign subsidiaries, rate
The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to the undistributed earnings of subsidiaries.
Effective Income Tax Rate Reconciliation, Tax Settlement, Foreign, Percent
Different tax rate applicable to income (loss) of foreign subsidiaries, rate
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent
Effect of changes in domestic tax laws, rate
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent
Other (Percent)
Effective Income Tax Rate Reconciliation, Percent
Effective tax rate
Effective Income Tax Rate Reconciliation, at Combined Normal Effective Statutory Income Tax Rate, Percent
Effective statutory tax rate
The combined normal effective statutory tax rate, imposed by the national, prefectural and municipal governments, applicable under enacted tax laws to the Company's pretax income from continuing operations for the period.
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Foreign, Percent
Effect of changes in foreign tax laws, rate
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the foreign statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the income tax rates.
Tax Benefit Recognized On Outside Basis Differences For Investment In Subsidiaries Affiliates
Tax benefit recognized on the outside basis differences for investment in subsidiaries and affiliates, rate
Tax Benefit Recognized On Outside Basis Differences For Investment In Subsidiaries Affiliates
Effective Income Tax Rate Reconciliation, Dividend From Foreign Subsidiaries, Percent
Dividends from foreign subsidiaries, rate
Effective income tax rate reconciliation, dividend from foreign subsidiaries, percent.
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Japan national tax rate, rate
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent
Japan local tax, net of national tax effect, rate
Effective Income Tax Rate Reconciliation, Cross-Border, Other, Percent
Unrecognized tax benefit
Effective Income Tax Rate Reconciliation, Tax Credit, Percent
Tax credits, rate
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Percent
Stock-based compensation awards, Percent
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent
Other, Percent
Effective Of Cross Border Tax Laws Percent
Effect of cross-border tax laws, Percent
Effective of cross border tax laws percent.
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Percent
Other jurisdictions, rate
UNITED KINGDOM
UK
INDIA
Other Foreign [Member]
Other Foreign [Member].
Income Tax Jurisdiction [Axis]
Income Tax Jurisdiction [Domain]
Domestic Tax Jurisdiction [Member]
Domestic tax effects [Member]
Domestic National Tax [Member]
Income Taxes Paid [Table]
Tokyo [Member]
Income Taxes Paid [Line Items]
Income Taxes Paid
Income taxes paid
State and Local Jurisdiction [Member]
Domestic Local Tax [Member]
Deferred Tax Assets, Gross [Abstract]
Deferred tax assets
Deferred Tax Assets Investments In Subsidiaries And Affiliates
Investments in subsidiaries and affiliates
The tax effect as of the balance sheet date of the amount of the estimated future tax reductions attributable to a difference between the tax basis and the generally accepted accounting principles basis of a company's investment in its wholly-owned subsidiaries and affiliates which will decrease future taxable income when such basis difference reverses.
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Severance Payments
Accrued pension and severance costs
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities
Other accrued expenses and provisions
Deferred Tax Assets, Operating Loss Carryforwards
Operating losses
Deferred Tax Assets, Other
Other
Deferred Tax Assets, Gross
Gross deferred tax assets
Deferred Tax Assets, Valuation Allowance
Less—Valuation allowances
Balance at beginning of year
Balance at end of year
Deferred Tax Assets, Property, Plant and Equipment
Depreciation, amortization and valuation of fixed assets
Deferred Tax Assets, Investments
Valuation of financial instruments
Deferred Tax Liabilities Lease Liabilities
Lease liabilities
Deferred tax liabilities lease liabilities.
Deferred Tax Liabilities, Gross [Abstract]
Deferred tax liabilities
Deferred Tax Liabilities Investments In Subsidiaries And Affiliates
Investments in subsidiaries and affiliates
The amount as of the balance sheet date of the estimated future tax effects attributable to investments in subsidiaries and affiliates which are not controlled and therefore not consolidated.
Deferred Tax Liabilities, Undistributed Foreign Earnings
Undistributed earnings of foreign subsidiaries
Deferred Tax Liabilities, Investments
Valuation of financial instruments
Deferred Tax Liabilities, Other
Other
Deferred Tax Liabilities, Gross
Total deferred tax liabilities
Deferred Tax Liabilities, Leasing Arrangements
Right-of-use assets
Deferred Tax Liabilities Property Plant And Equipment and Intangible Assets
Valuation of fixed assets and intangible assets
Deferred tax liabilities property plant and equipment and intangible assets.
Reduction Valuation Allowances Related To Valuation Of Financial Instruments
Reduction of valuation allowances related to to valuation of financial instruments
Reduction Valuation Allowances Related To Valuation Of Financial Instruments
Changes in Valuation Allowance of Certain Foreign Subsidiaries
Increase (decrease) of valuation allowances of certain foreign subsidiaries
Changes in valuation allowance of certain foreign subsidiaries.
Increase Decrease In Valuation Allowances Of Certain Foreign Subsidiaries Related To Valuation Of Financial Instruments
Increase (decrease) in valuation allowances of certain foreign subsidiaries related to valuation of financial instruments
Increase decrease in valuation allowances of certain foreign subsidiaries related to valuation of financial instruments.
Increase Decrease In Valuation Allowances Of Japanese Subsidiaries And The Company Related To Investments In Subsidiaries And Affiliates
Increase (decrease) in valuation allowances of japanese subsidiaries and the company related to investments in subsidiaries and affiliates
Increase decrease in valuation allowances of japanese subsidiaries and the company related to investments in subsidiaries and affiliates.
Unrecognized Tax Benefits
Balance at beginning of year
Balance at end of year
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions
Increases based on tax positions related to the current period
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions
Increases based on tax positions related to the prior periods
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations
Decreases related to lapse of the applicable statute of limitations
Unrecognized Tax Benefits Increases Decreases Resulting from Foreign Currency Translation
Exchange rate fluctuations
Unrecognized tax benefits increases decreases resulting from foreign currency translation.
Income Tax Contingency [Table]
Income Tax Contingency [Table]
Ministry of Finance, India [Member]
India
Inland Revenue, Singapore (IRAS) [Member]
Singapore
Income Tax Contingency [Line Items]
Income Tax Contingency [Line Items]
Income Tax Examination, Year under Examination
Income tax examination, year(s) under examination
Accumulated Other Comprehensive Income (Loss) [Table]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss) [Line Items]
AOCI Including Portion Attributable to Noncontrolling Interest, before Tax
Balance at beginning of year
Balance at end of year
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax
Other comprehensive income (loss) before reclassifications
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
Reclassifications out of accumulated other comprehensive income (loss)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Net change during the year
Reclassification out of Accumulated Other Comprehensive Income [Table]
Reclassification out of Accumulated Other Comprehensive Income [Axis]
Reclassification out of Accumulated Other Comprehensive Income [Domain]
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassifications out of accumulated other comprehensive income (loss) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Affected line items in consolidated statements of income [Line Items]
Noninterest Expense Compensation and Benefits
Non-interest expenses-Compensation and benefits / Revenue-Other
Amount of compensation and benefits in noninterest expense.
Class of Stock Disclosures [Abstract]
Common stock held in treasury:
Stock Issued During Period, Shares, Employee Stock Purchase Plans
Common stock issued to employees
Increase Decrease Treasury Shares Other
Other net change in treasury stock
Increase Decrease Treasury Shares Other
Treasury Stock, Shares, Retired
Cancellation of treasury stock
Decrease of common stock by cancellation of treasury stock
Treasury Stock, Shares, Acquired
Repurchases of common stock
Repurchased shares of common stock
Stock Issued During Period, Shares, Treasury Stock Reissued
Sales of common stock
Schedule of Stock by Class [Table]
Schedule of Stock by Class [Table]
Class of Stock [Line Items]
Class of Stock [Line Items]
Minimum Tradable Quantity Of Share Lot
Minimum tradable quantity of share lot
Minimum Tradable Quantity of Share Lot
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments with Regulatory Approval
Amounts available for distributions
Dividends Payable, Amount Per Share
Dividends on common stock per share
Share Repurchase Program, Expiration Date
Share buyback program date
Share Repurchase Program, Authorized, Amount
Share buyback program authorized amount
Share Repurchase Program, Authorized, Number of Shares
Share buyback program number of shares authorized to be repurchased
Commemorative Dividend Declared Per Share
Commemorative dividend declared per share
Commemorative dividend declared per share.
Share Repurchase Program [Axis]
Share Repurchase Program [Domain]
Board Directors Meeting Held On April 26 2023 [Member]
Board of directors meeting held on April 26, 2023 [Member]
Board directors meeting held on april 26 2023 member.
Board of Directors Meeting Held on January 31, 2024 [Member]
Board of directors meeting held on January 31, 2024 [Member]
Board of directors meeting held on January 31, 2024 member.
Board Of Directors Meeting Held On April 25 2025 [Member]
Board of directors meeting held on April 25 2025 [Member]
Board of directors meeting held on April 25 2025.
Board of directors meeting held on January 30, 2026 [Member]
Subsequent Event Type [Axis]
Subsequent Event Type [Domain]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table]
Nomura Securities [Member]
NSC [Member]
Nomura Securities
Nomura Financial Products and Services, Inc. [Member]
NFPS [Member]
Nomura Financial Products and Services, Inc.
Nomura Securities International Inc [Member]
NSI [Member]
Nomura Securities International, Inc.
Nomura Global Financial Products Inc [Member]
NGFP [Member]
Nomura Global Financial Products Inc [Member]
Instinet, LLC [Member]
ILLC [Member]
Instinet, LLC [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier One Capital Ratio
Tier 1 capital ratio
Tier One Capital Ratio
Capital to Risk Weighted Assets
Consolidated Capital adequacy ratio
Broker-Dealer, Minimum Net Capital Required, Broker-Dealer Subsidiary, Aggregate Indebtedness Standard
Net capital defined under the alternative method
Minimum Net Capital Percentage Of Aggregate Debit Items Arising From Client Transactions
Ratio of net capital under the alternative method
Minimum Net Capital Percentage of Aggregate Debit Items Arising from Client Transactions.
Minimum Net Capital Percentage Of Total Risk Margin Requirement
Percentage of total risk margin requirement
Minimum Net Capital Percentage of Total Risk Margin Requirement for all positions carried in client accounts and nonclient accounts.
Broker-Dealer, Minimum Net Capital Required, Parent, Aggregate Indebtedness Standard
Amount of maintenance of net capital as cash
Capital Required for Capital Adequacy
Minimum capital required
Cash Segregated under Other Regulations
Segregated client cash recognized as an asset in Deposits with stock exchanges and other segregated cash
Securities Segregated under Other Regulations
Segregated securities recognized as assets in Trading assets and Collateralized agreements
Common Equity Tier One Capital Ratio
Common equity Tier 1 capital ratio
Minimum Net Capital Percentage Of SEC Risk Margin Amount
Minimum net capital percentage of SEC risk margin amount
Minimum net capital percentage of SEC risk margin amount.
Minimum Net Capital Percentage Of CFTC Risk Margin Amount
Minimum net capital percentage of CFTC risk margin amount
Minimum net capital percentage of CFTC risk margin amount.
Capital Required To Be Well Capitalized To Risk Weighted Asset
Quantified total of business risk
Capital required to be well capitalized to risk weighted asset.
Schedule of Affiliated Companies and Other Equity Method Investees [Table]
Schedule of Affiliated Companies and Other Equity-Method Investees [Table]
Schedule of Affiliated Companies and Other Equity-Method Investees [Table]
Nomura Research Institute Ltd [Member]
NRI [Member]
Nomura Research Institute, Ltd [Member]
Nomura Real Estate Holdings Inc [Member]
NREH [Member]
Nomura Real Estate Holdings Inc [Member]
Subsidiary or Equity Method Investee [Line Items]
Subsidiary or Equity Method Investee [Line Items]
Affiliated Companies And Other Equity Method Investees Goodwill Included In Carrying Amount Of Investment
Difference between the carrying amount of the equity method investment and the underlying equity in net assets
Affiliated Companies and Other Equity Method Investees, Goodwill Included in Carrying Amount of Investment
Litigation Case [Axis]
Litigation Case [Axis]
Litigation Case [Domain]
Litigation Case Type [Domain]
Counterparty Name [Axis]
Counterparty Name [Domain]
Affiliate Group [Member]
Significant affiliated companies [Member]
Affiliate Group [Member]
Affiliated Companies And Other Equity Method Investees [Member]
Affiliated companies and other equity-method investees [Member]
Affiliated Companies and Other Equity-method Investees [Member]
Investments In Affiliated Companies
Investments in affiliated companies
Investments in Affiliated Companies
Other Receivables from Affiliated Companies
Other receivables from affiliated companies
Amount of receivables from an entity that is affiliated with the reporting entity by means of direct or indirect ownership.
Other Payables to Affiliated Companies
Other payables to affiliated companies
Other payables to affiliated companies, most of which are included in other liabilities but some portions are included in deposits received on banking business.
Purchase of Software and Tangible Assets
Purchase of software, securities and tangible assets
Purchase of software and tangible assets
Advances to Affiliate
Advances to affiliated companies
Accounting Standards Update 2016-02 [Member]
Accounting Standards Update 2016-02 [Member]
Equity Method Investments Aggregate Carrying Amount
Carrying amount
This element represents the aggregate carrying amount of equity-method investments held by the Company. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.
Investments, Fair Value Disclosure
Fair value
Schedule of Equity Method Investments [Table]
Equity Method Investee [Axis]
Equity Method Investee
Equity Method Investee [Domain]
Equity Method Investee
Equity Method Investee [Member]
Schedule of Equity Method Investments [Line Items]
Income (Loss) from Equity Method Investments
Equity in earnings of equity-method investees
Equity in earnings of affiliates
Undistributed earnings of subsidiaries
Total equity in undistributed earnings of subsidiaries
Proceeds from Equity Method Investment, Distribution
Dividends from equity-method investees and affiliates for which FVO was elected
Commitments [Table]
Commitments [Table]
Commitments [Table]
Liquidity facilities to central clearing counterparties [Member]
Liquidity facilities to central clearing counterparties
Other Commitments To Extend Credit [Member]
Other commitments to extend credit [Member]
Commitments [Line Items]
Commitments [Line Items]
Commitments [Line Items]
Commitments To Extend Credit
Commitments to extend credit
Commitments to extend credit.
Commitments To Invest
Commitments to invest
Commitments to invest.
Commitments and Contingencies Disclosure [Table]
Commitments and Contingencies Disclosure [Table]
Commitments and Contingencies Disclosure [Table]
Commitments and Contingencies Disclosure [Line Items]
Commitments and Contingencies Disclosure [Line Items]
Commitments and Contingencies Disclosure [Line Items]
Other Commitments [Table]
Subsequent Event [Member]
Subsequent event [Member]
Other Commitments [Axis]
Other Commitments [Domain]
Other Commitments [Member]
Other commitments [Member]
Other Commitments [Member]
Two Actions by Fairfield Sentry Ltd. and Fairfield Sigma Ltd. [Member]
Two actions by Fairfield Sentry Ltd. and Fairfield Sigma Ltd. [Member]
Two Actions by Fairfield Sentry Ltd. and Fairfield Sigma Ltd. [Member]
Claim Filed by the Madoff Trustee [Member]
Claim filed by the Madoff Trustee [Member]
Claim Filed by the Madoff Trustee [Member]
Action by FT Syndicate Banks [Member]
First Commercial Bank, Ltd., Land Bank of Taiwan Co., Ltd., Chang Hwa Commercial Bank Ltd, Taishin International Bank Co., Ltd., E.Sun Commercial Bank, Ltd, CTBC Bank Co., Ltd., Hwatai Bank, Ltd. and Bank of Taiwan Co., Ltd.
Action by Alken Fund Sicav and Alken Luxembourg S.A [Member]
Action by Alken Fund Sicav and Alken Luxembourg S.A
Action by York Global Finance Offshore BDH (Luxembourg) Sarl and a number of seemingly related funds [Member]
Action by York Global Finance Offshore BDH (Luxembourg) Sarl and a number of seemingly related funds
Action By European Commission For Infringing The Competition Law [Member]
Action By European Commission For Infringing The Competition Law.
Action By Bombay High Court [Member]
Action by bombay high court.
Action by Prosecutor of the Court of Auditors in Italy [Member]
Counterparty Issued A Claim In The English Courts [Member]
Loss Contingency, Estimate [Abstract]
Contingencies
Syndicate term loan
Amount, Syndicated loan receivable
Loss Contingency, Range of Possible Loss, Portion Not Accrued
Current estimate of maximum reasonably possible loss
Recovery of payment
Amount the plaintiff is seeking recovery of payments
Loss Contingency, Damages Sought, Value
Amount of damages sought
Loss Contingency Accrual, Provision
Loss contingency accrual provision
Repurchase Claims
Repurchase claims
Repurchase claims.
Commitments Amount Under Resale Agreements
Resale agreements
Commitments amount under resale agreements including amounts in connection with collateralized agreements, collateralized financing and Gensaki transactions.
Commitments Amount Under Repurchase Agreements
Repurchase agreements
Commitments amount under repurchase agreements including amounts in connection with collateralized agreements, collateralized financing and Gensaki transactions.
Unrecorded Unconditional Purchase Obligation
Purchase obligations for goods or services
Purchase obligations, Total
Commitments to Purchase Client Notes
Commitments to purchase client notes
Commitments to purchase client notes.
Civil Damages Commitments Payable
Civil damages
Civil damages commitments payable.
Project [Axis]
Project [Axis]
Project [Domain]
Maintenance Agreements [Member]
Maintenance Agreements [Member]
Maintenance agreements.
SRT Litigation Case [Axis]
SRT litigation case axis.
SRT Litigation Case [Domain]
SRT litigation case.
Litigation Status [Axis]
Litigation Status [Domain]
Legal Entity [Axis]
Entity [Domain]
Unrecorded Unconditional Purchase Obligation [Line Items]
Purchase obligations [Line Items]
Unrecorded Unconditional Purchase Obligation, Due in Next Twelve Months
Less than 1 year
Unrecorded Unconditional Purchase Obligation, Due within Two Years
1 to 2 years
Unrecorded Unconditional Purchase Obligation, Due within Three Years
2 to 3 years
Unrecorded Unconditional Purchase Obligation, Due within Four Years
3 to 4 years
Unrecorded Unconditional Purchase Obligation, Due within Five Years
4 to 5 years
Unrecorded Unconditional Purchase Obligation, Due after Five Years
More than 5 years
Guarantor Obligation [Table]
Guarantor Obligations, Nature [Axis]
Guarantees [Axis]
Guarantor Obligations, Nature [Domain]
Guarantees [Domain]
Derivative contracts [Member]
Derivative contracts [Member]
Financial Standby Letter of Credit [Member]
Standby letters of credit and other guarantees [Member]
Guarantor Obligations [Line Items]
Guarantees [Line Items]
Guarantor Obligations, Current Carrying Value
Carrying value
Guarantor obligations, current carrying value
Guarantor Obligations, Maximum Exposure, Undiscounted
Maximum potential payout /Notional total
Maximum potential payout /Notional
Schedule of Segment Reporting Information, by Segment [Table]
Schedule of Segment Reporting Information, by Segment [Table]
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
Income before income taxes
Total
Interest Revenue (Expense), Net
Net interest revenue
Net revenue
Net revenue
Total revenue after financial expenses
Noninterest Income
Non-interest revenue
All Other And Eliminations [Member]
Other (Incl. elimination) [Member]
All Other And Eliminations [Member]
Wealth Management Segment [Member]
Wealth Management [Member]
Banking Segment [Member]
Banking [Member]
Banking Segment [Member]
Net Gain Related To Economic Hedging Transactions
Net gain (loss) related to economic hedging transactions
Net gain related to economic hedging transactions
Realized Gain Loss on Investments in Equity Securities Held for Operating Purpose
Realized gain on investments in equity securities held for operating purposes
Realized gain (loss) on investments in equity securities held for operating purpose.
Corporate Items
Corporate items
Corporate items
Net Income Loss Other
Other
This item represents the other income (loss) of the other segment.
Unrealized Gain Loss on Securities Held for Operating Purposes
Unrealized gain (loss) on investments in equity securities held for operating purposes
Unrealized Gain Loss on Securities Held for Operating Purposes
Unrealized Gain Loss on Investments in Consolidated Income Loss Before Income Taxes
Unrealized gain (loss) on investments in equity securities held for operating purposes
Unrealized Gain Loss on Investments in Consolidated Income Loss Before Income Taxes
Non-interest expenses before unrealized gain (loss) on investments in equity securities held for operating purposes
Non-interest expenses
Non-interest expenses before unrealized gain (loss) on investments in equity securities held for operating purposes
Schedule of Revenues from External Customers and Long-Lived Assets [Table]
Americas [Member]
Europe [Member]
Subtotal [Member]
Subtotal [Member]
Subtotal [Member]
Asia Pacific [Member]
Asia and Oceania [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue, income (loss) before income taxes and long-lived assets
Long-Lived Assets
Consolidated, Long-lived assets
Parent Company Only Condensed Financial Information [Abstract]
Condensed Balance Sheet Statement [Table]
Condensed Balance Sheet Statements, Captions [Line Items]
Loans Receivable to Subsidiaries
Loans receivable to subsidiaries
Loans receivable to subsidiaries.
Dividends Receivable
Dividends receivable from subsidiaries and affiliates
Short Term Borrowings from Subsidiaries
Short-term borrowings from subsidiaries
Short term borrowings from subsidiaries.
Long Term Borrowings from Subsidiaries
Long-term borrowings from subsidiaries
Long term borrowings from subsidiaries.
Equity, Attributable to Parent [Abstract]
Equity Before Treasury Stock
Total NHI shareholders' equity before treasury stock
Equity before treasury stock.
Condensed Income Statement [Table]
Condensed Income Statements, Captions [Line Items]
Interest Income from Loans to Subsidiaries
Interest income from loans to subsidiaries and affiliates
Interest income from loans to subsidiaries.
Property and Equipment Fee Revenue
Property and equipment fee revenue from subsidiaries
Property and equipment fee revenue.
Rental Income, Nonoperating
Rent revenue from subsidiaries
Royalty Income, Nonoperating
Royalty on trademark from subsidiaries
Dividends From Subsidiaries and Affiliates
Dividends from subsidiaries and affiliates
Dividends from subsidiaries and affiliates.
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract]
Other Comprehensive Income Loss Own credit adjustments Net of Tax
Own credit adjustments
Other comprehensive income (loss) own credit adjustments net of tax.
Condensed Cash Flow Statement [Table]
Condensed Cash Flow Statements, Captions [Line Items]
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity
Adjustments and other
Payments to Acquire Interest in Subsidiaries and Affiliates
Payments for issuance of loans to subsidiaries
Proceeds from Divestiture of Businesses and Interests in Affiliates
Proceeds from repayment of loans to subsidiaries
Payments to Acquire Businesses and Interest in Affiliates
Increase in investments in subsidiaries
Payments for (Proceeds from) Businesses and Interest in Affiliates
Decrease in investments in subsidiaries
Proceeds From Short Term Debt from subsidiaries
Proceeds from issuances of short-term borrowings from subsidiaries
Proceeds from short term debt from subsidiaries.
Repayments of Short Term Debt From Subsidiaries
Payments for repurchases or maturity of short-term borrowings from subsidiaries
Repayments of short term debt from subsidiaries.
Proceeds from (Payment for) Other Financing Activity
Net change in other financing activities
Proceeds from Issuance of Senior Long-Term Debt
Proceeds from issuances of long-term borrowings from subsidiaries
Repayments of Senior Debt
Repayments of senior debt
Longterm Borrowings [Table]
Longterm Borrowings [Line Items]
Long-Term Debt, Fiscal Year Maturity [Abstract]
Long Term Debt Maturities Repayments
Total
Long term debt maturities repayments.
Guarantees [Abstract]
Financial Guarantee [Member]
Borrowings/Medium term notes/Repurchase transactions [Member]
Derivative Guarantee [Member]
Derivative transactions [Member]
Nomura Global Finance Co Ltd [Member]
Nomura International Funding Pte Ltd [Member]
Nomura International plc [Member]
Nomura Europe Finance NV [Member]
Nomura Corporate Funding Americans LLC [Member]
Nomura Bank International plc [Member]
Nomura America Finance LLC [Member]
Disclosure of Dividends from Subsidiaries and Investees [Abstract]
Dividends from subsidiaries and investees [Table]
Dividends from subsidiaries and investees [Line Items]
SEC Schedule, 12-04, Cash Dividends Paid to Registrant, Consolidated Subsidiaries
Dividends from consolidated subsidiaries
SEC Schedule, 12-04, Cash Dividends Paid to Registrant, 50 Percent or Less Owned Persons
Dividends from investees accounted for by the equity method
SEC Schedule, 12-04, Cash Dividends Paid to Registrant, Subsidiaries and Equity Method Investees
Total