Commitments and Contingent Liabilities - Schedule of Estimated Accrual Liability (Details) - National Prescription Opioid Litigation - USD ($) $ in Millions	Jun. 30, 2025	Mar. 31, 2025
Loss Contingencies [Line Items]
Current litigation liabilities	$ 776	$ 776
Long-term litigation liabilities	5,601	5,601
Total litigation liabilities	$ 6,377	$ 6,377