Composition of Other Intangible Assets (Detail) - USD ($) $ in Millions		Dec. 31, 2015	Dec. 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Accumulated amortization		$ (380)	$ (461)
Contract acquisition costs and other, net		1,322	1,274
Acquired Indefinite-lived Intangible Assets [Line Items]
Total Intangible Assets	[1]	1,451	1,351
Brands
Acquired Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets Acquired		129	77
Contract acquisition costs and other
Acquired Finite-Lived Intangible Assets [Line Items]
Contract acquisition costs and other		$ 1,702	$ 1,735

[1] See Footnote No. 17, “Related Party Transactions,” to our Consolidated Financial Statements for disclosure of related party amounts.