Income Taxes (Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Deferred income tax assets: (1)
Provisions not currently deductible for tax purposes	$ 365	$ 362
Tax losses/benefit carryforwards, net	847	924
Depreciation and amortization	102	97
Other assets	38	38
Total deferred income tax assets	1,352	1,421
Less: valuation allowance	(696)	(711)	$ (763)	$ (821)
Net deferred income tax assets	656	710
Deferred income tax liabilities:(1)
Depreciation and amortization	542	557
Inventory valuation reserves	130	153
Monetary exchange gains, net	24	29
Other liabilities	70	93
Total deferred income tax liabilities	766	832
Net deferred income tax liabilities	$ 110	$ 122