Loan Receivables and Allowance for Loan Losses - Loans Entered into a Loan Modification Program (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
|
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Total loans entered into a modification program | $ 193 | $ 197 | $ 409 | $ 419 |
Credit cards | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Total loans entered into a modification program | 192 | 196 | 407 | 417 |
Consumer installment loans | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Total loans entered into a modification program | 0 | 0 | 0 | 0 |
Commercial credit products | ||||
Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
Total loans entered into a modification program | $ 1 | $ 1 | $ 2 | $ 2 |