Securitizations and Variable Interest Entities (VIE) - Narrative (Detail) - USD ($) $ in Millions |
3 Months Ended | ||
|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Mar. 31, 2026 |
|
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |||
| Asset-backed securitization notes issued during period | $ 2,000 | $ 2,300 | |
| Initial receivable principal balance underlying asset-backed securitization notes issued during period | 2,200 | $ 2,500 | |
| Cash to be remitted to trusts | $ 881 | $ 904 | |