Accumulated Other Comprehensive Income (Changes In The Components Of AOCI) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Beginning balance	$ (86)	$ 56	$ (176)
Other comprehensive income (loss) before reclassification	90	(126)	162
Amounts reclassified from AOCI	17	(16)	70
Total other comprehensive income (loss)	107	(142)	232
Ending balance	21	(86)	56
Unrealized gains (losses) on AFS, net [Member]
Beginning balance	(96)	43	(163)
Other comprehensive income (loss) before reclassification	117	(128)	136
Amounts reclassified from AOCI	13	(11)	70
Total other comprehensive income (loss)	130	(139)	206
Ending balance	34	(96)	43
Foreign currency translation, net [Member]
Beginning balance	10	13	(13)
Other comprehensive income (loss) before reclassification	(27)	2	26
Amounts reclassified from AOCI	4	(5)	0
Total other comprehensive income (loss)	(23)	(3)	26
Ending balance	$ (13)	$ 10	$ 13

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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