Insurance Premiums (Roll Forward Of Premiums Receivable) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013
Insurance Premiums [Abstract]
Premiums Receivable, Beginning balance	$ 1,051		$ 1,228
Premium Payments Received	(120)		(135)
Premiums from New Business Written	6		0
Adjustments, Changes in Expected Term of Policies	(50)		(45)
Adjustments, Accretion of Premiums Receivable Discount	26		28
Adjustments, Other	(38)	[1]	(25)
Premiums Receivable, Ending balance	$ 875		$ 1,051

[1] Primarily consists of unrealized gains (losses) due to foreign currency exchange rates.