Fair Value of Financial Assets and Liabilities, Recurring (Details) (Fair Value, Measurements, Recurring [Member], Significant Other Observable Inputs (Level 2) [Member], USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets:
Foreign exchange contracts-forwards	$ 9	$ 6
Deferred compensation investments in cash surrender life insurance	90	88
Deferred compensation investments in mutual funds	30	28
Total	129	122
Liabilities:
Foreign exchange contracts-forwards	34	70
Interest rate swaps	3	0
Deferred compensation plan liabilities	127	125
Total	$ 164	$ 195