Finance Receivables - Narrative (Detail) - USD ($) $ in Millions |
3 Months Ended | ||
|---|---|---|---|
Jun. 30, 2025 |
Mar. 31, 2025 |
Jun. 30, 2024 |
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
| Financing receivables | $ 54,274 | $ 52,516 | $ 49,178 |
| Retail loans and leases threshold delinquent (percent) (more than) | 10.00% | ||
| Retail loans | |||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
| Financing receivables | $ 49,698 | 48,181 | |
| Collateral Pledged | Retail loans | |||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
| Financing receivables | $ 13,300 | $ 13,000 |