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SUPPLEMENTARY CONSOLIDATED FINANCIAL STATEMENT SCHEDULE VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2023
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Year | $ 931 | $ 160 | $ 151
Charges (Credits) to Costs and Expenses | (130) | 819 | 45
Charged to Other Accounts | (6) | 14 | 9
Deductions From Allowance Accounts | (275) | (62) | (45)
Balance at End of Year | 520 | 931 | 160
Current allowances | 500 | 921 | 158
Provision for bad debts | (130) | 819 | 45
U.S. Pharmaceutical |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Provision for bad debts | (206) | 725 |
Allowances for credit losses |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Year | 877 | 114 | 99
Charges (Credits) to Costs and Expenses | (130) | 819 | 45
Charged to Other Accounts | (2) | 5 | 5
Deductions From Allowance Accounts | (273) | (61) | (35)
Balance at End of Year | 472 | 877 | 114
Other allowances |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Year | 54 | 46 | 52
Charges (Credits) to Costs and Expenses | 0 | 0 | 0
Charged to Other Accounts | (4) | 9 | 4
Deductions From Allowance Accounts | (2) | (1) | (10)
Balance at End of Year | 48 | 54 | 46
Written-off |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Deductions From Allowance Accounts | (275) | (62) | (37)
Credited to other accounts and other |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Deductions From Allowance Accounts | $ 0 | $ 0 | $ (8)

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