Fair Value Measurements and Derivatives - Notional Amount of Currency Forward Contracts Designated and Undesignated as Cash Flow Hedges (Details) (USD $) In Millions, unless otherwise specified			3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 U.S. dollar	Mar. 31, 2013 Euro	Mar. 31, 2013 British pound	Mar. 31, 2013 Swedish krona	Mar. 31, 2013 Australian dollar	Mar. 31, 2013 South Africa rand	Mar. 31, 2013 Indian rupee
Fair Value Measurements [Line Items]
Maturity Of Foreign Currency Derivatives Month And Year			2014-03	2014-03	2014-03	2014-03	2014-02	2014-06	2013-11
Traded Currency			Mexican peso	U.S. dollar, Canadian dollar, Hungarian forint, British pound	U.S. dollar, Euro	Euro	U.S. dollar	U.S. dollar, Euro	U.S. dollar, British pound, Euro
Designated as Cash Flow Hedges	$ 189		$ 97	$ 49	$ 17	$ 16	$ 10
Undesignated	25		0		1	2	2	6	14
Total	$ 214	$ 217	$ 97	$ 49	$ 18	$ 18	$ 12	$ 6	$ 14