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SUPPLEMENTARY CONSOLIDATED FINANCIAL STATEMENT SCHEDULE VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2026 | Mar. 31, 2025 | Mar. 31, 2024
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Year | $ 520 | $ 931 | $ 160
Charges (Credits) to Costs and Expenses | 100 | (130) | 819
Charged to Other Accounts | (22) | (6) | 14
Deductions From Allowance Accounts | (329) | (275) | (62)
Balance at End of Year | 269 | 520 | 931
Current allowances | 259 | 500 | 921
Provision for bad debts | 100 | (130) | 819
North American Pharmaceutical |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Provision for bad debts |  | (206) | 725
Allowance for credit loss, writeoff | 483 | 237 |
Allowances for credit losses |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Year | 472 | 877 | 114
Charges (Credits) to Costs and Expenses | 100 | (130) | 819
Charged to Other Accounts | (38) | (2) | 5
Deductions From Allowance Accounts | (330) | (273) | (61)
Balance at End of Year | 204 | 472 | 877
Other allowances |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Year | 48 | 54 | 46
Charges (Credits) to Costs and Expenses | 0 | 0 | 0
Charged to Other Accounts | 16 | (4) | 9
Deductions From Allowance Accounts | 1 | (2) | (1)
Balance at End of Year | 65 | 48 | 54
Written-off |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Deductions From Allowance Accounts | (329) | (275) | (62)
Credited to other accounts and other |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Deductions From Allowance Accounts | $ 0 | $ 0 | $ 0

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