Reserves for Credit Losses - Changes in Loan Reserve (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2024 |
Mar. 31, 2023 |
|
| Financing Receivable, Allowance for Credit Loss [Roll Forward] | ||
| Provisions for credit losses | $ 1,269 | $ 1,055 |
| Card Member Loans | ||
| Financing Receivable, Allowance for Credit Loss [Roll Forward] | ||
| Beginning Balance | 5,118 | 3,747 |
| Provisions for credit losses | 1,014 | 786 |
| Other | (6) | 6 |
| Ending Balance | 5,271 | 4,053 |
| Card Member Loans | Principal | ||
| Financing Receivable, Allowance for Credit Loss [Roll Forward] | ||
| Net write-offs | (705) | (397) |
| Recoveries | 159 | 128 |
| Card Member Loans | Interest and fees | ||
| Financing Receivable, Allowance for Credit Loss [Roll Forward] | ||
| Net write-offs | $ (150) | $ (89) |
| X | ||||||||||
- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of increase in allowance for credit loss on financing receivable from recovery. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
|
| X | ||||||||||
- Definition Amount of writeoff of financing receivable, charged against allowance for credit loss. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of credit loss expense (reversal of expense) for financing receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of expense related to credit loss from transactions other than loan and lease transactions. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|