Goodwill and Other Identifiable Intangible Assets (Additional Information) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Indefinite-Lived Trademarks	$ 1,200		$ 1,200		$ 1,300
Amortization	30	$ 33	60	$ 66
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year	65		65
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	125		125
Finite-Lived Intangible Assets, Amortization Expense, Year Two	120		120
Finite-Lived Intangible Assets, Amortization Expense, Year Three	110		110
Finite-Lived Intangible Assets, Amortization Expense, Year Four	95		95
Finite-Lived Intangible Assets, Amortization Expense, Year Five	95		95
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	$ 257		$ 257