Maximum Maximum [Member] Total assets EBP, Total Assets Total assets available for benefits, including total investments at fair value and fully benefit-responsive investment contracts at contract value, and total receivables including notes receivable from participants and income, sales proceeds and other receivables Statistical Measurement [Domain] Statistical Measurement [Domain] EBP, Participant Contribution, Pretax, Maximum Annual Contribution to Plan, Percentage of Total Compensation EBP, Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage EBP, Loans or Fixed Income Obligations in Default or Classified as Uncollectible EBP, Loans or Fixed Income Obligations in Default or Classified as Uncollectible [Text Block] EBP, Loans or Fixed Income Obligations in Default or Classified as Uncollectible Total deductions EBP, Change in Net Asset Available for Benefit, Decrease Interest Income Fund 5749 Interest Income Fund 5749 [Member] Interest Income Fund 5749 Interest Income Fund 5736 Interest Income Fund 5736 [Member] Interest Income Fund 5736 Money Market Funds Money Market Funds [Member] Pacific Stock Index Fund Pacific Stock Index Fund [Member] Pacific Stock Index Fund, Managed by State Street Global Advisors EBP, Loan or Fixed Income Obligation, Current Balance EBP, Loan or Fixed Income Obligation,Unpaid Balance, End of Period EBP, Loan or Fixed Income Obligation,Unpaid Balance, End of Period Transfers from acquired company benefit plans EBP, Change in Net Asset Available for Benefit, Transfer to (from) Plan Total liabilities EBP, Liability Amendment Flag Amendment Flag EBP, Schedule of Asset Held for Investment [Table] EBP, Schedule of Asset Held for Investment [Table] Interest Income Fund 5710 Interest Income Fund 5710 [Member] Interest Income Fund 5710 EBP, Description of Plan and Accounting Change [Abstract] EBP, Investment, Fair Value and NAV EBP, Investment, Fair Value and NAV [Table Text Block] Emerging Markets Debt Fund Emerging Markets Debt Fund [Member] Emerging Markets Debt Fund, Managed by Prudential Investments [Domain] Investments [Domain] EBP, Participant Contribution, Pretax, Minimum Annual Contribution to Plan, Percentage of Total Compensation EBP, Participant Contribution, Pre-Tax, Minimum Annual Compensation to Total Compensation, Percentage Percentage of minimum pretax annual compensation that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), is permitted to contribute to total pretax annual compensation. Contract Termination Contract Termination [Member] European Stock Index Fund European Stock Index Fund [Member] European Stock Index Fund, Managed by State Street Global Advisors EBP, Loans or Fixed Income Obligations, Original Issued Amount EBP, Loans or Fixed Income Obligations,Original Amount EBP, Loans or Fixed Income Obligations,Original Amount Interest Income Fund 5744 Interest Income Fund 5744 [Member] Interest Income Fund 5744 Mutual Funds Classified as Other Mutual Funds Classified as Other [Member] Mutual Funds Classified as Other Interest Income Fund 5796 Interest Income Fund 5796 [Member] Interest Income Fund 5796 EBP, Schedule of Delinquent Participant Contribution, Pending Correction in VFCP EBP, Schedule of Delinquent Participant Contribution, Pending Correction in VFCP EBP, Reconciliation to Form 5500, Net Asset Available for Benefit, Contract Value to Current Value Adjustment EBP, Reconciliation to Form 5500, Net Asset Available for Benefit, Contract Value to Current Value Adjustment EBP, Schedule of Asset Held for Investment [Abstract] EBP, Accounting Policy [Table] EBP, Accounting Policy [Table] EBP, Maximum Penalty Free Withdrawal Per IRS Rules Due to Federally Declared Disaster EBP, Maximum Amount of Penalty Free Early Withdrawal Due to Federally Declared Disaster EBP, Maximum Amount Allowed by IRS Regulations of Penalty Free Early Withdrawal for Eligible Participants Impacted by Federally Declared Disaster Impacting Primary Residence Employee Benefit Plan, Schedule, Loans and Fixed Income Obligations in Default [Abstract] Employee Benefit Plan, Schedule, Loans and Fixed Income Obligations in Default [Abstract] Net increase in net assets during the year EBP, Change in Net Asset Available for Benefit, Increase Interest Income Fund 5743 Interest Income Fund 5743 [Member] Interest Income Fund 5743 EBP, Schedule of Reportable Transaction [Table] EBP, Schedule of Reportable Transaction [Table] Total Bond Market Fund Total Bond Market Fund, Managed by RW Baird & Company [Member] Total Bond Market Fund, Managed by RW Baird & Company Document [Domain] Document [Domain] Real Estate Investment Trust Fund Real Estate Investment Trust Fund [Member] Real Estate Investment Trust Fund, Managed by State Street Global Advisors EBP, Automatic Employer Contribution of Employee Eligible Compensation to Retirement Benefit Account EBP, Automatic Employer Contribution of Employee Eligible Compensation to Retirement Benefit Account EBP, Automatic Employer Contribution of Employee Eligible Compensation to Retirement Benefit Account Document Information [Line Items] Document Information [Line Items] EBP, Loans or Fixed Income Obligations, Amount of Interest Overdue EBP, Loans or Fixed Income Obligations, Interest Amount Overdue EBP, Loans or Fixed Income Obligations, Interest Amount Overdue EBP, Participant Loans Incremental Amount in Which Loans Are Granted EBP, Participant Loans Incremental Amount in Which Loans Are Granted EBP, Participant Loans Incremental Amount in Which Loans Are Granted Fair Value, Inputs, Level 2 Fair Value, Inputs, Level 2 [Member] EBP, Amount of Outstanding Loans, Backed by Cash Collateral, Issued Under the Plan's Securities Lending Program EBP, Amount of Outstanding Loans, Backed by Cash Collateral, Issued Under the Plan's Securities Lending Program EBP, Amount of Outstanding Loans, Backed by Cash Collateral, Issued Under the Plan's Securities Lending Program Equity Securities Equity Securities [Member] Corporate bonds Corporate Bond Securities [Member] EBP, Fully Benefit-Responsive Investment Contract [Line Items] EBP, Fully Benefit-Responsive Investment Contract [Line Items] EBP, Related Party and Party-in-Interest Transactions EBP, Related Party and Party-in-Interest Transactions [Text Block] EBP, Related Party and Party-in-Interest Transactions [Abstract] Total receivables EBP, Receivable EBP, Loans or Fixed Income Obligations, Amount of Loan Principal Overdue EBP, Loans or Fixed Income Obligations, Principal Amount Overdue EBP, Loans or Fixed Income Obligations, Principal Amount Overdue Distributions to participants EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Lehman Brothers Holdings, Inc. Loan Issued 12/21/2007 Lehman Brothers Holdings, Inc., Loan Issued 12/21/2007, Maturity 12/28/2017 [Member] Lehman Brothers Holdings, Inc., Loan Issued 12/21/2007, Maturity 12/28/2017 EBP, Statement of Net Asset Available for Benefit [Abstract] EBP, Statement of Net Asset Available for Benefit [Abstract] Total Fair Value Excluding Assets Valued Using NAV Practical Expedient EBP, Investment, Total Fair Value Excluding Assets Valued Using NAV Practical Expedient Fair value of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Includes, but not limited to, derivatives. Excludes investment measured at net asset value per share as practical expedient, including, but not limited to, commingled funds that may include 103-12 investments, common collective trusts, and pooled separate accounts. EBP, Accounting Policy [Line Items] EBP, Accounting Policy [Line Items] EBP, Form 5500 Caption, Total Income EBP, Form 5500 Caption, Total Income Interest Income Fund Total (16 Funds) Interest Income Fund Total Current Value [Member] Interest Income Fund Total Current Value Total Bond Market Fund, Managed by Neuberger Berman Total Bond Market Fund, Managed by Neuberger Berman [Member] Total Bond Market Fund, Managed by Neuberger Berman EBP, Reconciliation of Financial Statement to Form 5500 [Table] EBP, Reconciliation of Financial Statement to Form 5500 [Table] Interest Income Fund 5728 Interest Income Fund 5728 [Member] Interest Income Fund 5728 International Real Estate Index Fund International Real Estate Index Fund [Member] International Real Estate Index Fund, Managed by State Street Global Advisors Inflation Protected Bond Fund Inflation Protected Bond Fund [Member] Inflation Protected Bond Fund, Managed by State Street Global Advisors Fair Value, Inputs, Level 1, Level 2, and Level 3 Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Document Type Document Type EBP, Asset Held for Investment, Participant Loan, Interest Rate EBP, Asset Held for Investment, Participant Loan, Interest Rate EBP, Reconciliation of Financial Statement to Form 5500 [Abstract] Interest Income Fund 5740 Interest Income Fund 5740 [Member] Interest Income Fund 5740 Cash and Cash Equivalents Cash and Cash Equivalents [Member] Lehman Brothers Holdings, Inc. Issued 5/17/2007 Lehman Brothers Holdings, Inc., Loan Issued 5/17/2007, Maturity 11/30/2056 [Member] Lehman Brothers Holdings, Inc., Loan Issued 5/17/2007, Maturity 11/30/2056 EBP, Note Receivable from Participant EBP, Note Receivable from Participant EBP, Assets Held for Investment, Participant Loans, Term EBP, Assets Held for Investment, Participant Loans, Term EBP, Assets Held for Investment, Participant Loans, Term Entity Registrant Name Entity Registrant Name EBP 001 EBP 001 [Member] EBP 001 EBP, Schedule of Delinquent Participant Contribution [Table] EBP, Schedule of Delinquent Participant Contribution [Table] EBP, Minimum Employment Period for Eligibility For Employer Contribution to Retirement Benefit Account EBP, Minimum Employment Period for Eligibility For Employer Contribution to Retirement Benefit Account EBP, Minimum Employment Period for Eligibility For Employer Contribution to Retirement Benefit Account EBP, Investment Acquired, Excluding Plan Interest in Master Trust, Purchase Price EBP, Investment Acquired, Excluding Plan Interest in Master Trust, Purchase Price EBP, Maximum Number of Participant Loans Outstanding Simultaneously EBP, Maximum Number of Participant Loans Outstanding Simultaneously EBP, Maximum Number of Participant Loans Outstanding Simultaneously EBP, Derivative [Line Items] EBP, Derivative [Line Items] Bond Market Fund Total Bond Market Fund, Managed by Western Asset Management Company [Member] Total Bond Market Fund, Managed by Western Asset Management Company EBP, Loan or Fixed Income Obligation Interest Rate EBP, Loan or Fixed Income Obligation,Interest Rate EBP, Loan or Fixed Income Obligation,Interest Rate EBP, Amount of Loans Outstanding, Backed by Non-Cash Collateral, Issued Under the Plan's Securities Lending Program EBP, Amount of Loans Outstanding, Backed by Non-Cash Collateral, Issued Under the Plan's Securities Lending Program Loans secured by non-cash collateral made to non-participant borrowers (brokers/dealers) approved by the Trustee under the Securities Lending Program of the Plan's separately managed accounts, which include assets of the Plan excluding the IBM Stock Fund and Interest Income Fund assets of the Plan. Interest Income Fund 5711 Interest Income Fund 5711 [Member] Interest Income Fund 5711 EBP, Investment, Par or Maturity Value EBP, Investment, Par or Maturity Value EBP, Participant-Directed and Nonparticipant-Directed Status [Domain] EBP, Participant-Directed and Nonparticipant-Directed Status [Domain] EBP, Number of Mutual Funds Within Expanded Choice Select Funds Available for Contributions EBP, Number of Mutual and Commingled Funds Within Expanded Choice Select Funds Available for Contributions EBP, Number of Mutual and Commingled Funds Within Expanded Choice Select Funds Available for Contributions EBP, Participant Contributions of Eligible Compensation to Funds, Percentage Multiple EBP, Participant Contributions of Eligible Compensation to Funds, Percentage Multiple EBP, Participant Contributions of Eligible Compensation to Funds, Percentage Multiple Interest Income Fund 5758 Interest Income Fund 5758 [Member] Interest Income Fund 5758 Net appreciation in fair value of investments EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment EBP, Participant Loans Fixed Interest Rate Percentage Added Increment to Prime Rate EBP, Participant Loans Fixed Interest Rate Percentage Added Increment to Prime Rate EBP, Participant Loans Fixed Interest Rate Percentage Added Increment to Prime Rate EBP, Related Party and Party-in-Interest Transactions [Line Items] EBP, Related Party and Party-in-Interest Transactions [Line Items] Fair Value, Inputs, Level 3 Fair Value, Inputs, Level 3 [Member] EBP, Loan Obligor [Axis] EBP, Loan Obligor [Axis] EBP, Loan Obligor US Government Corporations and Agencies Securities US Government Corporations and Agencies Securities [Member] EBP, Net Asset Available for Benefit EBP, Net Asset Available for Benefit, Beginning Balance EBP, Net Asset Available for Benefit, Ending Balance EBP, Net Asset Available for Benefit Investments in fully benefit-responsive investment contracts, at contract value (Note 5) EBP, Investment, Excluding Plan Interest in Master Trust, Contract Value Document Information, Document [Axis] Document Information, Document [Axis] EBP, Form 5500 Caption, Net Assets EBP, Form 5500 Caption, Net Assets EBP, Participant Age Used to Determine Target Retirement Fund to Invest Contribution When Election by Participant is Not Made EBP, Participant Age Used to Determine Target Retirement Fund to Invest Contribution When Election by Participant is Not Made EBP, Participant Age Used to Determine Target Retirement Fund Year to Invest Contribution When Election by Participant is Not Made Investments measured at net asset value using the NAV practical expedient (1) Fair Value Measured at Net Asset Value Per Share [Member] EBP, Period of Time Under Which Participant Borrowings Are Subject to the Maximum Amount and Percent of Total Account Loan Rules EBP, Period of Time Within Which Participant Borrowings Maximum Amount and Percent of Total Account Apply EBP, Period of Time Within Which Participant Borrowings Maximum Amount and Percent of Total Account Apply EBP, Statement of Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Line Items] EBP, Acquired Company Participant Loans, Term EBP, Acquired Company Participant Loans, Term EBP, Acquired Company Participant Loans, Term Total International Stock Market Index Fund Total International Stock Market Index Fund [Member] Total International Stock Market Index Fund, Managed by State Street Global Advisors EBP, Schedule of Delinquent Participant Contribution, Late Repayment Included [true false] EBP, Schedule of Delinquent Participant Contribution, Late Repayment Included [true false] Legal Entity [Axis] Legal Entity [Axis] EBP, Description of Plan [Table] EBP, Description of Plan [Table] Equity mutual funds Mutual Fund [Member] EBP, Schedule of Delinquent Participant Contribution, Corrected EBP, Schedule of Delinquent Participant Contribution, Corrected Investment Income EBP, Additions to Net Asset Available for Benefit, Investment Income Total investment income, including net appreciation in fair value of investments, interest income from investments and dividend income from investments EBP, Other Investment EBP, Other Investment [Member] Total Bond Market Fund, Managed by Pacific Investment Management Company Total Bond Market Fund, Managed by Pacific Investment Management Company [Member] Total Bond Market Fund, Managed by Pacific Investment Management Company EBP, Investment Sold, Excluding Plan Interest in Master Trust, Selling Price EBP, Investment Sold, Excluding Plan Interest in Master Trust, Selling Price EBP, EmployeeBenefitPlanReconciliationOfNetAssetsAvailableForBenefitsToForm5500 [Table Text Block] EBP, EmployeeBenefitPlanReconciliationOfNetAssetsAvailableForBenefitsToForm5500 [Table Text Block] Tabular disclosure of reconciliation of net assets available for benefits per financial statements to Form 5500 for employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Form 5500 is form provided by Department of the Treasury, Internal Revenue Service (IRS); Department of Labor (DOL), Employee Benefit Security Administration (EBDA); and Pension Benefit Guaranty Corporation (PBGC). EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Related Party and Party-in-Interest Transactions [Table] Total Bond Market Fund, Managed by Loomis, Sayles and Company Total Bond Market Fund, Managed by Loomis, Sayles and Company [Member] Total Bond Market Fund, Managed by Loomis, Sayles and Company EBP, Fully Benefit-Responsive Investment Contract [Table] EBP, Fully Benefit-Responsive Investment Contract [Table] EBP, Total Amount of Outstanding Collateralized Loans Issued Under the Plan's Securities Lending Program EBP, Total Amount of Outstanding Collateralized Loans Issued Under Plan's Securities Lending Program EBP, Total amount of loans issued and outstanding that are secured by cash and non-cash collateral and are made to non-participant borrowers (brokers/dealers) approved by the Trustee under the Securities Lending Program of the Plan's separately managed accounts, which include assets of the Plan excluding the IBM Stock Fund and Interest Income Fund assets of the Plan. EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount EBP, Investment, Fair Value and NAV EBP, Investment, Fair Value and NAV [Text Block] EBP, Note Receivable from Participant, Account, Minimum Borrowing, Amount EBP, Note Receivable from Participant, Account, Minimum Borrowing, Amount Interest Income Fund 5759 Interest Income Fund 5759 [Member] Interest Income Fund 5759 Uncertain Tax Positions Taken or Expected to be Taken Uncertain Tax Positions Taken or Expected to be Taken Uncertain Tax Positions Taken or Expected to be Taken That Would Require Recognition of a Liability (or Asset) or Other Disclosure in the Financial Statements Interest Income Fund 5739 Interest Income Fund 5739 [Member] Interest Income Fund 5739 EBP, Fully Benefit-Responsive Investment Contract [Abstract] EBP, Fully Benefit-Responsive Investment Contract [Abstract] EBP, Derivative EBP, Derivative [Text Block] Expanded Choice Mutual Funds Expanded Choice - Select Funds [Member] Expanded Choice - Select Funds, Administered by Fidelity Total investments at fair value EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value Sigma Finance Corp, Issued 6/4/2007 Sigma Finance Corp, Loan Issued 6/4/2007, Maturity 6/4/2009 [Member] Sigma Finance Corp, Loan Issued 6/4/2007, Maturity 6/4/2009 Fair Value, Inputs, Level 1 Fair Value, Inputs, Level 1 [Member] Interest Income Fund 57Y4 Interest Income Fund 57Y4 [Member] Interest Income Fund 57Y4 EBP, Fully Benefit-Responsive Investment Contract EBP, Fully Benefit-Responsive Investment Contract [Text Block] EBP, Investment, Fair Value and NAV [Abstract] EBP, Total Collateral, Cash or NonCash, Required to be Held for Loans Issued under the Plan's Securities Lending Program EBP, Total Collateral Required to be Held, including Cash and NonCash, as Percentage of Total Loan Issued Under the Plan's Securities Lending Program EBP, Total Collateral Required to be Held, including Cash and NonCash, as a Percentage of the Fair Value of the Loan Issued Under the Plan's Securities Lending Program Synthetic GICs Synthetic GICs [Member] Synthetic GICs Statistical Measurement [Axis] Statistical Measurement [Axis] EBP, Derivative [Table] EBP, Derivative [Table] EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Table] Total additions Total additions to net asset available for benefit Total additions to net asset available for benefit, including income/(loss) on investment, interest income on note receivable from participant, contributions from participants and amounts transferred from external plans. Contributions from participants EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution EBP, Basis of Accounting EBP, Basis of Accounting [Policy Text Block] Government securities US Government Debt Securities [Member] EBP, Investment, Number of Shares EBP, Investment, Number of Shares EBP, Investment, Interest Rate EBP, Investment, Interest Rate EBP, Minimum Number of Funds to Which Participant Can Make Contributions EBP, Minimum Number of Funds to Which Participant Can Make Contributions EBP, Minimum Number of Funds to Which Participant Can Make Contributions EBP, Derivative, Notional, Amount EBP, Derivative, Notional, Amount EBP, Schedule of Delinquent Participant Contribution [Abstract] EBP, Use of Estimate EBP, Use of Estimate [Policy Text Block] EBP, Total Collateral Held, Including Cash or NonCash, for Loans Outstanding under the Plan's Securities Lending Program, Percentage of Loan Amount Outstanding EBP, Total Collateral Held, Including Cash or NonCash, for Loans Outstanding under the Plan's Securities Lending Program, Percentage of Loan Amount Outstanding EBP, Total Collateral Held, Including Cash or NonCash, for Loans Outstanding under the Plan's Securities Lending Program, Percentage of Loan Amount Outstanding Interest Income Fund 5760 Interest Income Fund 5760 [Member] Interest Income Fund 5760 EBP, Number of Primary Investment Funds in Plan EBP, Number of Primary Investment Funds in Plan EBP, Number of Primary Investment Funds in Plan EBP, Schedule of Asset Held for Investment EBP, Schedule of Asset Held for Investment [Text Block] Cover [Abstract] Long Term Credit Fund - Exhibit L Long Term Credit Fund - Exhibit L [Member] Long Term Credit Fund - Exhibit L EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment Total investment income and interest income on notes receivable from participants per the financial statements Total investment income and interest income on notes receivable from participants per the financial statements EBP, Risk and Uncertainty EBP, Risk and Uncertainty [Text Block] EBP, Schedule of Delinquent Participant Contribution [Line Items] EBP, Schedule of Delinquent Participant Contribution [Line Items] EBP, Synthetic Investment Contract EBP, Synthetic Investment Contract [Member] Minimum Minimum [Member] Investment Type [Axis] Investment Type [Axis] Interest income on notes receivable from participants EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant EBP, Participant Account Balance Maximum that Results in Lump-Sum Distribution of Account Balance Upon Employment Termination EBP, Participant Account Balance Maximum that Results in Lump-Sum Distribution of Account Balance Upon Employment Termination EBP, Participant Account Balance Maximum that Results in Lump-Sum Distribution of Account Balance Upon Employment Termination Long Term Credit Fund Long Term Credit Fund - Exhibit S [Member] Long Term Credit Fund, Managed by Loomis, Sayles and Company Mortgage and asset-backed securities Mortgage-Backed Securities, Other [Member] EBP, Description of Plan [Line Items] EBP, Description of Plan [Line Items] EBP, Investment, Fair Value and NAV [Line Items] EBP, Investment, Fair Value and NAV [Line Items] EBP, Description of Plan EBP, Description of Plan [Text Block] EBP, Investment Acquired, Excluding Plan Interest in Master Trust, Current Value EBP, Investment Acquired, Excluding Plan Interest in Master Trust, Current Value Derivative Derivative [Member] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Statement of Net Asset Available for Benefit [Table] Interest Income Fund Interest Income Fund [Member] Interest Income Fund EBP, Schedule of Asset Held for Investment [Line Items] EBP, Schedule of Asset Held for Investment [Line Items] Interest income from investments EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Investment Fixed income mutual funds Fixed Income Funds [Member] IBM Corporation common stock EBP, Employer, Common Stock [Member] Short-Term Investments Short-Term Investments [Member] Investment, Identifier [Axis] Investment, Identifier [Axis] High Yield Debt Fund High Yield Debt Fund [Member] High Yield Debt Fund, Managed by JP Morgan Administrative Expenses, Net EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense Small/Mid-Cap Stock Index Fund Small/Mid-Cap Stock Index Fund [Member] Small/Mid-Cap Stock Index Fund, Managed by State Street Global Advisors EBP, Employee Benefit Plan Reconciliation Of Investment Income Per Financial Statements To Form 5500 [Table Text Block] EBP, Employee Benefit Plan Reconciliation Of Investment Income Per Financial Statements To Form 5500 [Table Text Block] Tabular disclosure of reconciliation of investment income per financial statement to Form 5500 for employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Form 5500 is form provided by Department of the Treasury, Internal Revenue Service (IRS); Department of Labor (DOL), Employee Benefit Security Administration (EBSA); and Pension Benefit Guaranty Corporation (PBGC). Schedule of Loans or Fixed Income Obligations in Default or Classified as Uncollectible EBP, Schedule of Reportable Transaction [Line Items] EBP, Participant Primary Residence Loan, Term EBP, Participant Primary Residence Loan, Term EBP, Participant Primary Residence Loan, Term EBP, Statement of Change in Net Asset Available for Benefit [Abstract] EBP, Statement of Change in Net Asset Available for Benefit [Abstract] EBP Eligible Participant Minimum Installment Distribution Amount EBP, Eligible Participant Minimum Installment Distribution Amount Per Period EBP, Eligible Participant Minimum Installment Distribution Amount Per Period Income, sales proceeds and other receivables EBP, Income, Sales Proceeds and Other Receivables The amount of receivable for sale of investment held by; income earned (including but not limited to, dividend and interest receivables) but not yet received on investment held by; and other amount receivable classified as other for; employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), EBP, Schedule of Delinquent Participant Contribution, Corrected Outside VFCP EBP, Schedule of Delinquent Participant Contribution, Corrected Outside VFCP EBP, Tax Status [Table] EBP, Tax Status [Table] EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] Dividends EBP, Change in Net Asset Available for Benefit, Increase from Dividend Income on Investment High Yield and Emerging Markets Bond Fund High Yield and Emerging Markets Bond Fund [Member] High Yield and Emerging Markets Bond Fund, Managed by Pacific Investment Management Company EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] EBP, Loan Obligor [Domain] EBP, Loan Obligor [Domain] EBP, Loan Obligor [Domain] Total Stock Market Index Fund Total Stock Market Index Fund [Member] Total Stock Market Index Fund, Managed by State Street Global Advisors Payable for investments purchased EBP, Liability for Investment Purchase EBP, Tax Status [Abstract] Interest Income Fund 5748 Interest Income Fund 5748 [Member] Interest Income Fund 5748 EBP, Disaster Related Early Withdrawal Maximum Elective Repayment Period Per IRS Rules to Avoid Ordinary Income Treatment EBP, Disaster Related Early Withdrawal Maximum Elective Repayment Period EBP, Disaster Related Early Withdrawal Maximum Elective Repayment Period Allowed by IRS Regulations to Avoid Ordinary Taxes EBP Hardship Withdrawal Potential Additional Tax Percentage on Early Distributions EBP, Hardship Withdrawal Potential Additional Tax Percentage on Early Distributions EBP, Hardship Withdrawal Potential Additional Tax Percentage on Early Distributions EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] EBP, Expense EBP, Expense [Policy Text Block] EBP, Reconciliation of Financial Statement to Form 5500 EBP, Reconciliation of Financial Statement to Form 5500 [Text Block] EBP, Investment EBP, Investment [Policy Text Block] Interest Income Fund 5745 Interest Income Fund 5745 [Member] Interest Income Fund 5745 EBP, Participant Account Balance Minimum Allowing Deferral of Distribution to IRS Limit EBP, Participant Account Balance Minimum Allowing Deferral of Distribution to IRS Limit EBP, Participant Account Balance Minimum Allowing Deferral of Distribution Upon Employment Termination up to IRS Limit Entity Central Index Key Entity Central Index Key EBP, Tax Status [Line Items] EBP, Tax Status [Line Items] EBP, Participant General Purpose Loan Agreement, Term EBP, Participant General Purpose Loan Agreement, Term EBP, Participant General Purpose Loan Agreement, Term EBP, Participant Maximum Contribution to Plan, After Tax EBP, Participant Contribution, Aftertax, Maximum Annual Compensation to Total Compensation, Percentage EBP, Participant Contribution, Aftertax, Maximum Annual Compensation to Total Compensation, Percentage Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] EBP, Summary of Accounting Policy EBP, Summary of Accounting Policy [Text Block] Equity Funds Equity Funds [Member] EBP, Schedule of Delinquent Participant Contribution EBP, Schedule of Delinquent Participant Contribution [Text Block] EBP, Tax Status EBP, Tax Status [Text Block] EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage EBP, Participant-Directed and Nonparticipant-Directed Status [Axis] EBP, Participant-Directed and Nonparticipant-Directed Status [Axis] Document Information [Table] Document Information [Table] EBP, Fair Value, Investment, NAV, Redemption Other Restriction, Description EBP, Fair Value, Investment, NAV, Redemption Other Restriction, Description EBP, Schedule of Delinquent Participant Contribution, Not Corrected EBP, Schedule of Delinquent Participant Contribution, Not Corrected EBP, Investment, Fair and Contract Value EBP, Investment, Excluding Plan Interest in Master Trust, Fair and Contract Value EBP, Investment, Excluding Plan Interest in Master Trust, Fair and Contract Value Entity [Domain] Entity [Domain] EBP, Derivative [Abstract] EBP, Investment, Fair Value and NAV [Table] EBP, Investment, Fair Value and NAV [Table]