v3.25.2
Financial Instruments - Schedule of Derivative Financial Liabilities by Maturity (Details) - Measured at fair value through profit or loss - JPY (¥)
¥ in Millions
Mar. 31, 2025
Mar. 31, 2024
Disclosure of maturity analysis for financial liabilities [Line Items]    
Carrying amount ¥ 20,671 ¥ 23,352
Bonds    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Carrying amount 4,190,632 4,092,879
Financial liabilities, at fair value 5,635,859 5,090,592
Bonds | Within one year    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 499,779 913,282
Bonds | Between one and two years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 570,054 206,481
Bonds | Between two and three years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 216,517 774,784
Bonds | Between three and four years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 355,414 185,176
Bonds | Between four and five years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 1,046,745 326,949
Bonds | More than five years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 2,947,350 2,683,919
Long-term loans    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Carrying amount 324,633 750,873
Financial liabilities, at fair value 334,907 805,847
Long-term loans | Within one year    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 161,958 66,983
Long-term loans | Between one and two years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 1,837 100,467
Long-term loans | Between two and three years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 1,903 113,605
Long-term loans | Between three and four years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 76,945 347,612
Long-term loans | Between four and five years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 41,495 76,162
Long-term loans | More than five years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 50,769 101,019
Trade and other payables    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Carrying amount   547,521
Financial liabilities, at fair value 475,541 547,521
Trade and other payables | Within one year    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 475,541 547,521
Trade and other payables | Between one and two years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 0 0
Trade and other payables | Between two and three years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 0 0
Trade and other payables | Between three and four years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 0 0
Trade and other payables | Between four and five years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 0 0
Trade and other payables | More than five years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 0 0
Lease liabilities    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Carrying amount 573,325 619,639
Financial liabilities, at fair value 825,819 900,755
Lease liabilities | Within one year    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 64,443 66,208
Lease liabilities | Between one and two years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 57,426 60,944
Lease liabilities | Between two and three years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 54,117 55,831
Lease liabilities | Between three and four years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 50,974 53,459
Lease liabilities | Between four and five years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 49,114 51,235
Lease liabilities | More than five years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 549,744 613,078
Derivative liabilities    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Carrying amount 16,528 25,108
Financial liabilities, at fair value 18,043 27,590
Derivative liabilities | Within one year    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 7,766 16,547
Derivative liabilities | Between one and two years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 1,078 762
Derivative liabilities | Between two and three years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 1,047 1,053
Derivative liabilities | Between three and four years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 1,013 1,113
Derivative liabilities | Between four and five years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 1,081 1,096
Derivative liabilities | More than five years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value 6,057 7,019
Derivative assets    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Carrying amount (84,369) (120,223)
Financial liabilities, at fair value (269,425) (400,354)
Derivative assets | Within one year    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value (35,404) (56,538)
Derivative assets | Between one and two years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value (29,400) (40,327)
Derivative assets | Between two and three years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value (29,428) (39,186)
Derivative assets | Between three and four years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value (30,556) (73,404)
Derivative assets | Between four and five years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value (18,240) (35,218)
Derivative assets | More than five years    
Disclosure of maturity analysis for financial liabilities [Line Items]    
Financial liabilities, at fair value ¥ (126,397) ¥ (155,681)