v3.26.1
Financial Instruments - Schedule of Financial Assets and Liabilities at Fair Value (Details) - JPY (¥)
¥ in Millions
Mar. 31, 2026
Mar. 31, 2025
Measured at fair value through profit or loss    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial liabilities ¥ 23,709 ¥ 20,671
Measured at fair value through profit or loss | Derivative financial instruments    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial liabilities 20,524 16,309
Measured at fair value through profit or loss | Financial liabilities associated with contingent consideration arrangements    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial liabilities 3,185 4,362
Measured at fair value through profit or loss | Lease liabilities    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial liabilities 594,520 573,325
Measured at fair value through profit or loss | Trade and other payables    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial liabilities   475,541
Derivative hedging instruments | Derivative hedging instruments    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial liabilities   219
Derivative hedging instruments | Derivative financial instruments | Derivative hedging instruments    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial liabilities   219
Financial liabilities measured at fair value    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial liabilities 23,709 20,890
Financial liabilities measured at fair value | Derivative financial instruments    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial liabilities 20,524 16,528
Financial liabilities measured at fair value | Financial liabilities associated with contingent consideration arrangements    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial liabilities 3,185 4,362
Other financial liabilities    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial liabilities 6,061,942 5,739,936
Other financial liabilities | Lease liabilities    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial liabilities 594,520 573,325
Other financial liabilities | Lease liabilities | Derivative hedging instruments    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial liabilities 594,520 573,325
Other financial liabilities | Other    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial liabilities 94,240 175,805
Other financial liabilities | Other | Derivative hedging instruments    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial liabilities 94,240 175,805
Other financial liabilities | Trade and other payables    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial liabilities 491,345 475,541
Other financial liabilities | Trade and other payables | Derivative hedging instruments    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial liabilities 491,345 475,541
Other financial liabilities | Bonds and loans    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial liabilities 4,881,837 4,515,265
Other financial liabilities | Bonds and loans | Derivative hedging instruments    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial liabilities 4,881,837 4,515,265
Measured at fair value through other comprehensive income    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial assets 324,606 296,597
Measured at fair value through other comprehensive income | Investments in equity instruments    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial assets 173,034 151,687
Measured at fair value through other comprehensive income | Investments in debt instruments    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial assets 85,148 79,342
Measured at fair value through other comprehensive income | Trade and other receivables    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial assets 66,424 65,568
Measured at fair value through profit or loss    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial assets 51,585 44,987
Measured at fair value through profit or loss | Derivative financial instruments    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial assets 11,102 12,361
Measured at fair value through profit or loss | Investments in convertible notes    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial assets 8,776 10,424
Measured at fair value through profit or loss | Investments in debt instruments    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial assets 21,219 12,005
Measured at fair value through profit or loss | Financial assets associated with contingent consideration arrangements    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial assets 10,488 10,197
Derivative hedging instruments    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial assets 156,818 72,007
Derivative hedging instruments | Derivative financial instruments    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial assets 156,818 72,007
Financial assets measured at fair value    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial assets 533,009 413,592
Financial assets measured at fair value | Investments in equity instruments    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial assets 173,034 151,687
Financial assets measured at fair value | Derivative financial instruments    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial assets 167,920 84,369
Financial assets measured at fair value | Investments in convertible notes    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial assets 8,776 10,424
Financial assets measured at fair value | Investments in debt instruments    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial assets 106,366 91,348
Financial assets measured at fair value | Financial assets associated with contingent consideration arrangements    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial assets 10,488 10,197
Financial assets measured at fair value | Trade and other receivables    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial assets 66,424 65,568
Financial assets measured at amortized cost    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial assets 1,388,186 1,052,586
Financial assets measured at amortized cost | Trade and other receivables    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial assets 777,888 643,896
Financial assets measured at amortized cost | Other financial assets    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial assets 15,244 23,576
Financial assets measured at amortized cost | Cash and cash equivalents    
Disclosure Of Financial Assets And Liabilities [Line Items]    
Financial assets ¥ 595,054 ¥ 385,113