General Information - Schedule of Accounts Receivable and Allowances (Details) - USD ($) $ in Millions |
Mar. 31, 2026 |
Mar. 31, 2025 |
|---|---|---|
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | ||
| Receivables Sold and Derecognized | $ 932 | $ 876 |
| Proceeds Collected on Behalf of Financial Institutions | 897 | 872 |
| Net Proceeds Paid to Financial Institutions | (9) | (52) |
| Deferred Purchase Price at March 31 | 22 | 17 |
| Pledged Receivables at March 31 | $ 155 | $ 157 |