v3.26.1
Income taxes - Summary the Schedules of Deferred Tax Assets and Liabilities by Major Because of their Occurrence (Detail) - JPY (¥)
¥ in Millions
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Recognized in profit or loss ¥ 61,544  
Deferred Tax Assets [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) 1,853,608 ¥ 1,404,936
Recognized in profit or loss (12,331) 169,339
Recognized in other comprehensive income (6,169) 289,805
Changes accompanying business combination 1,370 1,150
Recognized directly in equity 8,101 3,125
Other [1] 22,812 (14,747)
Impact from loss of control of the Financial Services business [2] (736,763)  
Deferred tax liability (asset) 1,130,628 1,853,608
Deferred Tax Assets [Member] | Unused tax losses [member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) 81,391 77,541
Recognized in profit or loss (11,007) 2,270
Recognized in other comprehensive income   (2)
Changes accompanying business combination   567
Other [1] 3,410 1,015
Impact from loss of control of the Financial Services business [2] 47  
Deferred tax liability (asset) 73,747 81,391
Deferred Tax Assets [Member] | Defined Benefit Liabilities [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) 62,973 75,547
Recognized in profit or loss 11,676 (475)
Recognized in other comprehensive income (13,014) (4,550)
Other [1] 492 (7,549)
Impact from loss of control of the Financial Services business [2] 11,032  
Deferred tax liability (asset) 51,095 62,973
Deferred Tax Assets [Member] | Amortization Including Content Assets [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) 28,072 19,619
Recognized in profit or loss 8,168 8,903
Changes accompanying business combination 10  
Recognized directly in equity 7,389  
Other [1] (8,358) (450)
Deferred tax liability (asset) 35,281 28,072
Deferred Tax Assets [Member] | Lease liabilities [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) 135,274 135,730
Recognized in profit or loss 26,059 10,457
Other [1] 5,428 (10,913)
Impact from loss of control of the Financial Services business [2] (16,510)  
Deferred tax liability (asset) 150,251 135,274
Deferred Tax Assets [Member] | Warranty Reserves And Accrued Expenses [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) 174,772 167,402
Recognized in profit or loss 25,869 11,737
Changes accompanying business combination 299 3
Other [1] 8,530 (4,370)
Impact from loss of control of the Financial Services business [2] (9,850)  
Deferred tax liability (asset) 199,620 174,772
Deferred Tax Assets [Member] | Inventories [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) 46,477 48,807
Recognized in profit or loss (2,914) (3,504)
Changes accompanying business combination 12  
Other [1] 1,183 1,174
Deferred tax liability (asset) 44,758 46,477
Deferred Tax Assets [Member] | Depreciation [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) 38,894 41,603
Recognized in profit or loss 21,218 (477)
Other [1] 1,046 (2,232)
Impact from loss of control of the Financial Services business [2] (1,961)  
Deferred tax liability (asset) 59,197 38,894
Deferred Tax Assets [Member] | Tax Credit Carryforwards [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) 61,597 57,646
Recognized in profit or loss (19,815) 4,219
Changes accompanying business combination   57
Other [1] 2,452 (325)
Deferred tax liability (asset) 44,234 61,597
Deferred Tax Assets [Member] | Allowance for credit losses [member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) 12,003 10,741
Recognized in profit or loss 401 152
Changes accompanying business combination 124  
Other [1] 915 1,110
Impact from loss of control of the Financial Services business [2] (426)  
Deferred tax liability (asset) 13,017 12,003
Deferred Tax Assets [Member] | Impairment Of Investments [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) 54,208 7,780
Recognized in profit or loss (37,490) 51,863
Other [1] (6,166) (5,435)
Impact from loss of control of the Financial Services business [2] (546)  
Deferred tax liability (asset) 10,006 54,208
Deferred Tax Assets [Member] | Deferred Revenue [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) 72,600 48,454
Recognized in profit or loss (12,705) 24,147
Changes accompanying business combination (25)  
Other [1] 4,631 (1)
Deferred tax liability (asset) 64,501 72,600
Deferred Tax Assets [Member] | Other temporary differences [member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) [3] 395,274 236,976
Recognized in profit or loss (28,048) 38,527 [3]
Recognized in other comprehensive income 331 656 [3]
Changes accompanying business combination 950 523 [3]
Recognized directly in equity 712 3,125 [3]
Other [1] (5,915) 115,467 [3]
Impact from loss of control of the Financial Services business [2] (118,100)  
Deferred tax liability (asset) 245,204 395,274 [3]
Deferred Tax Assets [Member] | Equity Securities Measured At FVPL [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) 12,866 19,240
Recognized in profit or loss   (9,781)
Recognized in other comprehensive income 6,514 4,076
Other [1] 8,650 (669)
Impact from loss of control of the Financial Services business [2] (2,028)  
Deferred tax liability (asset) 26,002 12,866
Deferred Tax Assets [Member] | Debt Securities Measured At FVOCI [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) 576,263 382,527
Recognized in profit or loss   4,309
Recognized in other comprehensive income   289,625
Other [1]   (100,198)
Impact from loss of control of the Financial Services business [2] (576,263)  
Deferred tax liability (asset)   576,263
Deferred Tax Assets [Member] | Research and development expenditures [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) [3] 100,944 75,323
Recognized in profit or loss 6,257 26,992 [3]
Other [1] 6,514 (1,371) [3]
Deferred tax liability (asset) 113,715 100,944 [3]
Deferred Tax Liabilities [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) (1,469,552) (1,071,810)
Recognized in profit or loss (28,222) (190,891)
Recognized in other comprehensive income 1,684 (219,403)
Changes accompanying business combination (16,513) (4,702)
Recognized directly in equity   7
Other [1] (10,405) 17,247
Impact from loss of control of the Financial Services business [2] 741,789  
Deferred tax liability (asset) (781,219) (1,469,552)
Deferred Tax Liabilities [Member] | Insurance Contract Liabilities [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) (719,837) (499,709)
Recognized in profit or loss   (67,854)
Recognized in other comprehensive income   (219,798)
Other [1]   67,524
Impact from loss of control of the Financial Services business [2] 719,837  
Deferred tax liability (asset)   (719,837)
Deferred Tax Liabilities [Member] | Other temporary differences [member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) [4] (166,601) (51,948)
Recognized in profit or loss (36,734) (60,669) [4]
Recognized in other comprehensive income 1,684 376 [4]
Changes accompanying business combination (1,577) 2,140 [4]
Recognized directly in equity [4]   7
Other 21,302 [1] (56,507) [4]
Impact from loss of control of the Financial Services business [2] 5,113  
Deferred tax liability (asset) (176,813) (166,601) [4]
Deferred Tax Liabilities [Member] | Right-of-use assets [member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) (120,530) (113,240)
Recognized in profit or loss (18,944) (8,529)
Other [1] (4,016) 1,239
Impact from loss of control of the Financial Services business [2] 16,839  
Deferred tax liability (asset) (126,651) (120,530)
Deferred Tax Liabilities [Member] | Equity Securities Measured At FVPL [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) (100,151) (52,334)
Recognized in profit or loss 10,141 (48,477)
Other [1] (6,446) 660
Deferred tax liability (asset) (96,456) (100,151)
Deferred Tax Liabilities [Member] | Intangible Assets Acquired Through Stock Exchange Offerings [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) (23,949) (23,949)
Recognized in profit or loss (608)  
Deferred tax liability (asset) (24,557) (23,949)
Deferred Tax Liabilities [Member] | Intangible Assets Acquired Through Business Combinations [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) [4] (182,287) (193,054)
Recognized in profit or loss 30,412 15,287 [4]
Changes accompanying business combination (14,936) (6,842) [4]
Other (13,367) [1] 2,322 [4]
Deferred tax liability (asset) (180,178) (182,287) [4]
Deferred Tax Liabilities [Member] | Undistributed Earnings Of Foreign Subsidiaries And Affiliates [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) (99,226) (84,951)
Recognized in profit or loss (7,161) (16,303)
Recognized in other comprehensive income   19
Other [1] (7,878) 2,009
Deferred tax liability (asset) (114,265) (99,226)
Deferred Tax Liabilities [Member] | Investment in M3, Inc. [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) (56,971) (52,625)
Recognized in profit or loss (5,328) (4,346)
Deferred tax liability (asset) ¥ (62,299) ¥ (56,971)
[1] “Other” includes exchange differences on translating foreign operations and others.
[2] This includes the impact of the deconsolidation of the SFGI, which operates Financial Services business, resulting from the execution of the Partial Spin-off of the Financial Services business.
[3] “Research and development expenditures,” which were included within “Other” in the fiscal year ended March 31, 2025, have increased in materiality and have been reclassified and presented separately, starting from the fiscal year ended March 31, 2026. As a result of this change, “Research and development expenditures,” which were included within “Other” in the fiscal year ended March 31, 2025, have been reclassified.
[4] “Intangible assets acquired through business combinations,” which were included within “Other” in the fiscal year ended March 31, 2025, have increased in materiality and have been reclassified and presented separately, starting from the fiscal year ended March 31, 2026. As a result of this change, certain reclassifications have been made, the primary ones being as follows: “Intangible assets acquired through business combinations,” which were included within “Other” in the fiscal year ended March 31, 2025, have been reclassified; and “Intangible assets derived from EMI Music Publishing acquisition,” which were presented in the fiscal year ended March 31, 2025, have been reclassified and presented as “Intangible assets acquired through business combinations,” considering the nature of the adjustments.