v3.25.2
Income Taxes - Schedule of Reconciliation of Changes in Deferred Taxes (Details) - JPY (¥)
¥ in Millions
 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Net deferred tax liabilities, as of beginning of year ¥ 280,088 ¥ 95,383
Recognized in profit or (loss) 71,116 198,755
Recognized in other comprehensive income 6,891 (22,119)
Other (22,503) 8,069
Net deferred tax liabilities, as of end of year 335,592 280,088
Research and development expenses    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Net deferred tax liabilities, as of beginning of year 217,010 136,230
Recognized in profit or (loss) 53,732 77,180
Recognized in other comprehensive income 0 0
Other 9,816 3,600
Net deferred tax liabilities, as of end of year 280,558 217,010
Inventories    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Net deferred tax liabilities, as of beginning of year 138,402 110,911
Recognized in profit or (loss) 64,265 20,482
Recognized in other comprehensive income 0 0
Other (10,788) 7,009
Net deferred tax liabilities, as of end of year 191,879 138,402
Property, plant and equipment    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Net deferred tax liabilities, as of beginning of year (68,509) (71,759)
Recognized in profit or (loss) 5,332 9,249
Recognized in other comprehensive income 0 0
Other (1,839) (5,999)
Net deferred tax liabilities, as of end of year (65,016) (68,509)
Intangible assets    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Net deferred tax liabilities, as of beginning of year (390,270) (452,594)
Recognized in profit or (loss) 65,032 99,039
Recognized in other comprehensive income 0 0
Other (16,599) (36,715)
Net deferred tax liabilities, as of end of year (341,837) (390,270)
Financial assets measured at FVTOCI    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Net deferred tax liabilities, as of beginning of year (7,639) (5,128)
Recognized in profit or (loss) 0 0
Recognized in other comprehensive income 4,235 (2,056)
Other 1,119 (455)
Net deferred tax liabilities, as of end of year (2,285) (7,639)
Accrued expenses and provisions    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Net deferred tax liabilities, as of beginning of year 185,593 165,043
Recognized in profit or (loss) (75,010) 7,469
Recognized in other comprehensive income 0 0
Other 7,624 13,081
Net deferred tax liabilities, as of end of year 118,207 185,593
Defined benefit plans    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Net deferred tax liabilities, as of beginning of year 14,728 6,406
Recognized in profit or (loss) (3,768) 667
Recognized in other comprehensive income 2,231 2,170
Other 375 5,485
Net deferred tax liabilities, as of end of year 13,566 14,728
Deferred income    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Net deferred tax liabilities, as of beginning of year 5,493 7,432
Recognized in profit or (loss) (875) (1,955)
Recognized in other comprehensive income 0 0
Other 41 16
Net deferred tax liabilities, as of end of year 4,659 5,493
Unused tax losses    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Net deferred tax liabilities, as of beginning of year 88,671 101,092
Recognized in profit or (loss) (36,355) (15,970)
Recognized in other comprehensive income 0 0
Other 2,973 3,549
Net deferred tax liabilities, as of end of year 55,289 88,671
Tax credits    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Net deferred tax liabilities, as of beginning of year 46,159 52,091
Recognized in profit or (loss) (21,469) (11,230)
Recognized in other comprehensive income 0 0
Other 2,664 5,298
Net deferred tax liabilities, as of end of year 27,354 46,159
Investments in subsidiaries and associates    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Net deferred tax liabilities, as of beginning of year (26,801) (36,838)
Recognized in profit or (loss) 17,595 10,183
Recognized in other comprehensive income 0 0
Other (361) (146)
Net deferred tax liabilities, as of end of year (9,567) (26,801)
Cash flow hedges    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Net deferred tax liabilities, as of beginning of year 21,645 38,480
Recognized in profit or (loss) 2,969 2,227
Recognized in other comprehensive income 3,775 (19,062)
Other 1,461 0
Net deferred tax liabilities, as of end of year 29,850 21,645
Other    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Net deferred tax liabilities, as of beginning of year 55,606 44,017
Recognized in profit or (loss) (332) 1,414
Recognized in other comprehensive income (3,350) (3,171)
Other (18,989) 13,346
Net deferred tax liabilities, as of end of year ¥ 32,935 ¥ 55,606