Consolidated Statement Of Comprehensive Income (Loss) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Comprehensive Income (Loss)
Net income (loss)	$ 250	$ 1,234	$ (1,319)
Unrealized gains (losses) on available-for-sale securities: [Abstract]
Unrealized gains (losses) arising during the period	(213)	176	277
Provision (benefit) for income taxes	(76)	72	93
Total	(137)	104	184
Reclassification adjustments for (gains) losses included in net income (loss)	(13)	39	64
Provision (benefit) for income taxes	(5)	14	22
Total	(8)	25	42
Available-for-sale securities with other-than-temporary impairments: [Abstract]
Other-than-temporary impairments and unrealized gains (losses) arising during the period	15	50	(8)
Provision (benefit) for income taxes	6	18	(3)
Total	9	32	(5)
Reclassification adjustments for (gains) losses included in net income (loss)	(5)	69	34
Provision (benefit) for income taxes	(2)	24	12
Total	(3)	45	22
Foreign currency translation: [Abstract]
Foreign currency translation gains (losses)	3	24	(13)
Provision (benefit) for income taxes	1	(2)	0
Total	2	26	(13)
Reclassification adjustments for (gains) losses included in net income (loss)	(5)	0	0
Total	(5)	0	0
Total other comprehensive income (loss)	(142)	232	230
Comprehensive income (loss)	$ 108	$ 1,466	$ (1,089)