Financing Receivables - Collectively Evaluated Financing Receivables (Details) - USD ($) $ in Millions |
6 Months Ended | |
|---|---|---|
Jun. 30, 2020 |
Dec. 31, 2019 |
|
| Maximum | ||
| Financing receivables | ||
| Reasonable and supportable economic forecast duration | 2 years | |
| Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjustment | ||
| Financing receivables | ||
| Financing receivables - credit allowance, including related off-balance sheet commitments) | $ 64 |