Quarterly Results (Unaudited) (Subnote) (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2017 |
|
| Net intermittent discrete tax benefits, primarily related to the remeasurement of reserves and related interest | $ 111 | $ 168 | $ 168 |
| Net intermittent discrete tax provision | 1,201 | ||
| Wealth Management | |||
| Net intermittent discrete tax benefits, primarily related to the remeasurement of reserves and related interest | 0 | ||
| Net intermittent discrete tax provision | 402 | ||
| Investment Management | |||
| Net intermittent discrete tax benefits, primarily related to the remeasurement of reserves and related interest | 0 | ||
| Net intermittent discrete tax provision | $ 94 | ||
| Impairment of equity method investment | $ 46 | $ 53 | |