Income Taxes - Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Millions	Mar. 31, 2025	Mar. 31, 2024
Deferred tax assets
Tax loss/credit carryforwards	$ 2,477	$ 2,535
Accrued interest	19	24
Operating lease liabilities	132	172
Contract accounting	122	127
Depreciation and amortization	252	129
Other assets	310	298
Total deferred tax assets	3,312	3,285
Valuation allowance	(2,242)	(2,264)
Net deferred tax assets	1,070	1,021
Deferred tax liabilities
Operating right-of-use asset	(127)	(161)
Investment basis differences	(10)	(13)
Employee benefits	(82)	(7)
Other liabilities	(133)	(166)
Total deferred tax liabilities	(352)	(347)
Total net deferred tax assets (liabilities)	$ 718	$ 674

The amount as of the balance sheet date of the estimated future tax effects attributable to the difference between the tax basis and the book basis of accrued interest computed in accordance with generally accepted accounting principles. The difference in basis, will change future taxable income when such basis difference is realized.

No definition available.