Intangible assets (Tables)

12 Months Ended

Mar. 31, 2026

Disclosure Of Intangible Assets Explanatory [Abstract]

Disclosure of Carrying Value of Intangible Assets

The carrying value of intangible assets is as follows:


		Yen in millions
		March 31,
		2025				2026
Capitalized development costs			582,606				523,437
Software and other			780,660				869,318

Total			1,363,266				1,392,755

Disclosure of Changes In Cost, Accumulated Amortization of Intangible Assets

Changes in cost and accumulated amortization of intangible assets are as follows:

(Cost)


		Yen in millions
		Capitalized development costs				Software and other				Total
Balance as of April 1, 2024			1,058,334				1,139,895				2,198,228

Additions			—				60,914				60,914
Internally developed			111,546				189,229				300,775
Sales or disposal			(98,495	)			(158,523	)			(257,018	)
Foreign currency translation adjustments			(564	)			(4,850	)			(5,414	)
Other			(3,839	)			(23,210	)			(27,050	)

Balance as of March 31, 2025			1,066,981				1,203,454				2,270,435

Additions			—				102,039				102,039
Internally developed			106,751				216,060				322,812
Sales or disposal			(149,833	)			(148,545	)			(298,378	)
Foreign currency translation adjustments			3,093				32,538				35,631
Other			(40,490	)			(19,240	)			(59,730	)

Balance as of March 31, 2026			986,503				1,386,306				2,372,808


(Accumulated amortization)
		Yen in millions
		Capitalized development costs				Software and other				Total
Balance as of April 1, 2024			(419,997	)			(422,905	)			(842,902	)

Amortization			(162,068	)			(145,632	)			(307,700	)
Sales or disposal			98,495				144,423				242,919
Foreign currency translation adjustments			—				2,577				2,577
Other			805				(1,257	)			(2,062	)

Balance as of March 31, 2025			(484,375	)			(422,794	)			(907,169	)

Amortization			(151,780	)			(177,862	)			(329,643	)
Sales or disposal			149,833				99,267				249,100
Foreign currency translation adjustments			—				(17,198	)			(17,198	)
Other			23,257				1,600				24,857

Balance as of March 31, 2026			(463,066	)			(516,987	)			(980,053	)