Derivative Financial Instruments and Risk Management (Details 2) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Derivatives, Fair Value
Asset Fair Value	$ 110	$ 138
Liability Fair Value	(13)	(10)
Designated derivatives
Derivatives, Fair Value
Asset (Liability) Fair Value	93	116
Designated derivatives | Interest rate contracts | Other assets
Derivatives, Fair Value
Asset Fair Value	101	122
Designated derivatives | Interest rate contracts | Accrued expenses
Derivatives, Fair Value
Liability Fair Value	(8)	(6)
Undesignated derivatives
Derivatives, Fair Value
Asset (Liability) Fair Value	4	12
Undesignated derivatives | Foreign exchange contracts | Other assets
Derivatives, Fair Value
Asset Fair Value	4	7
Undesignated derivatives | Foreign exchange contracts | Accrued expenses
Derivatives, Fair Value
Liability Fair Value	(5)	(4)
Undesignated derivatives | Cross currency contracts | Other assets
Derivatives, Fair Value
Asset Fair Value	$ 5	$ 9