Consolidated Statement Of Stockholders' Equity (Parenthetical) $ in Millions |
6 Months Ended |
|---|---|
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Jun. 30, 2016
USD ($)
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| Statement of Stockholders' Equity [Abstract] | |
| Tax on unrealized investment gain | $ 21 |
| X | ||||||||||
- Definition Amount of tax expense (benefit) before reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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