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Commitments and Contingent Liabilities - Estimated Accrual Liability (Details) - National Prescription Opioid Litigation - USD ($) $ in Millions | Jun. 30, 2022 | Mar. 31, 2022
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Loss Contingencies [Line Items] |  |
Current litigation liabilities | $ 759 | $ 1,046
Long-term litigation liabilities | 7,132 | 7,220
Total litigation liabilities | $ 7,891 | $ 8,266

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