Other Liabilities - Deferred Card and Other Fees (Details) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Other Liabilities Disclosure [Abstract] | ||
| Deferred card and other fees | $ 5,099 | $ 4,475 |
| Deferred direct acquisition costs | (170) | (180) |
| Reserves for membership cancellations | (274) | (253) |
| Deferred card and other fees, net | $ 4,655 | $ 4,042 |