Schedule of Deferred Acquisition Cost and Future Policy Benefits Payable With Our Long-Duration Insurance Products (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Insurance [Abstract]
Other long-term assets, Deferred acquisition Costs	$ 135	$ 167
Trade accounts payable and accrued expenses, Deferred acquisition Cost	0	0
Long-term liabilities, Deferred acquisition Cost	0	0
Total asset (liability), Deferred acquisition Cost	135	167
Other long-term assets, Future policy benefits payable	0	0
Trade accounts payable and accrued expenses, Future policy benefits payable	(64)	(68)
Future policy benefits payable	(2,151)	(2,349)
Total asset (liability), Future policy benefits payable	$ (2,215)	$ (2,417)