Condensed Consolidated Statement of Comprehensive Income - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
|
| Statement of Comprehensive Income [Abstract] | ||||
| Net income | $ 378 | $ 275 | $ 1,059 | $ 754 |
| Unrealized gains (losses) on available-for-sale securities: | ||||
| Non-credit-related impairment recoveries (losses) on debt securities not expected to be sold | 0 | 0 | 0 | 2 |
| Unrealized net gains (losses) on available-for-sale securities arising during the period, net of reclassification for net realized gains and losses | 62 | 22 | 264 | (25) |
| Total unrealized gains (losses) on available-for-sale securities | (62) | (22) | (264) | 27 |
| Unrealized gains (losses) on cash flow hedging derivatives, net of reclassifications to income | 0 | 2 | 0 | 2 |
| Change in accumulated unrealized losses for pension and other post-retirement obligations | 1 | 1 | 3 | 2 |
| Other comprehensive income (loss), net of tax | (61) | (19) | (261) | 31 |
| Comprehensive income | $ 317 | $ 256 | $ 798 | $ 785 |
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of unrealized gain (loss) on investment in marketable security. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after tax and reclassification adjustments of other comprehensive income (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount, after tax and reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after tax of other than temporary impairment loss (OTTI) on investments in available-for-sale and held-to-maturity debt securities, recognized in other comprehensive loss and attributable to parent entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|