CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 108	$ 267	$ 320	$ 734
Other comprehensive (loss) income
Change in unrealized holding (losses) gains on available-for-sale securities, net of tax benefit (expense) of $32, $12, $(48), and $123, respectively	(59)	(23)	89	(229)
Reclassification adjustment for gross (gains) losses included in net income, net of tax benefit (expense) of $1, $(12), $8, and $(5), respectively	(4)	21	(15)	8
Other comprehensive (loss) income	(63)	(2)	74	(221)
Comprehensive income	45	265	394	513
Less: Comprehensive (loss) income attributable to noncontrolling interest in consolidated entity – Exchange	(1)	221	249	393
Total comprehensive income – Indemnity	$ 46	$ 44	$ 145	$ 120