Other Comprehensive Earnings (Loss) - Tax Effects of Components of OCI (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Other Comprehensive Income (Loss), before Tax | $ (77) | $ (27) | $ (18) |
| Other Comprehensive Income (Loss), Tax | 28 | 10 | 7 |
| Other Comprehensive Income (Loss), Net of Tax | (49) | (17) | (11) |
| Accumulated Net Unrealized Investment Gain (Loss) [Member] | 听 | 听 | 听 |
| Other Comprehensive Income (Loss), before Tax | 听 | (13) | 16 |
| Other Comprehensive Income (Loss), Tax | 听 | 5 | (6) |
| Other Comprehensive Income (Loss), Net of Tax | 听 | (8) | 10 |
| Accumulated Reclassification Adjustment For Realized Holding Gains Losses Including Portion Attributable To Noncontrolling Interest [Member] | 听 | 听 | 听 |
| Other Comprehensive Income (Loss), before Tax | 听 | 听 | (40) |
| Other Comprehensive Income (Loss), Tax | 听 | 听 | 15 |
| Other Comprehensive Income (Loss), Net of Tax | 听 | 听 | (25) |