Accumulated Other Comprehensive Income (Details Of The Reclassification From AOCI) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net gains (losses) on financial instruments at fair value and foreign exchange	$ 69	$ 55	$ (99)
Income (loss) before income taxes	416	1,598	(2,239)
Provision (benefit) for income taxes	166	364	(920)
Net income (loss)	250	1,234	(1,319)
Amounts reclassified from AOCI [Member]
Net income (loss)	16
Unrealized gains (losses) on AFS, net [Member] | Amounts reclassified from AOCI [Member]
Net gains (losses) on financial instruments at fair value and foreign exchange	23
Net investment income	(5)
Income (loss) before income taxes	18
Provision (benefit) for income taxes	7
Net income (loss)	11
Foreign currency translation, net [Member] | Amounts reclassified from AOCI [Member]
Net gains (losses) on financial instruments at fair value and foreign exchange	$ 5