Income Taxes - Components Of Deferred Tax Balances (Details) - USD ($) $ in Millions	Mar. 31, 2023	Mar. 31, 2022
Assets
Receivable allowances	$ 51	$ 49
Opioid-related litigation and claims	699	755
Compensation and benefit related accruals	265	285
Net operating loss and credit carryforwards	760	739
Lease obligations	427	422
Other	127	83
Subtotal	2,329	2,333
Less: valuation allowance	(696)	(726)
Total assets	1,633	1,607
Liabilities
Inventory valuation and other assets	(2,079)	(1,993)
Fixed assets and systems development costs	(32)	(184)
Intangibles	(267)	(233)
Lease right-of-use assets	(412)	(401)
Other	(19)	(17)
Total liabilities	(2,809)	(2,828)
Net deferred tax liability	(1,176)	(1,221)
Long-term deferred tax asset	211	197
Long-term deferred tax liability	$ (1,387)	$ (1,418)

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