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Commitments and Contingent Liabilities - Estimated Accrual Liability (Details) - National Prescription Opioid Litigation - USD ($)
$ in Millions
Sep. 30, 2022
Mar. 31, 2022
Loss Contingencies [Line Items]    
Current litigation liabilities $ 703 $ 1,046
Long-term litigation liabilities 6,644 7,220
Total litigation liabilities $ 7,347 $ 8,266