Derivative Financial Instruments and Risk Management (Details 2) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Derivatives, Fair Value
Asset Fair Value	$ 104	$ 101
Liability Fair Value	(9)	(23)
Designated derivatives
Derivatives, Fair Value
Asset (Liability) Fair Value	62	71
Designated derivatives | Interest rate contracts | Other assets
Derivatives, Fair Value
Asset Fair Value	66	79
Designated derivatives | Interest rate contracts | Accrued expenses
Derivatives, Fair Value
Liability Fair Value	(4)	(8)
Undesignated derivatives
Derivatives, Fair Value
Asset (Liability) Fair Value	33	7
Undesignated derivatives | Foreign exchange contracts | Other assets
Derivatives, Fair Value
Asset Fair Value	3	5
Undesignated derivatives | Foreign exchange contracts | Accrued expenses
Derivatives, Fair Value
Liability Fair Value	(5)	(15)
Undesignated derivatives | Cross currency contracts | Other assets
Derivatives, Fair Value
Asset Fair Value	$ 35	$ 17