Fair Value of Assets and Liabilities (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2013
Assets
Investment	$ 0		$ 0
Liabilities
Investsment other-than-temporary impairment charge	7
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value [Member]
Assets
Deposits held in money market funds	527	[1]	9	[1]
Available for sale securities	11	[2]	8	[2]
Foreign exchange contracts	1	[3]	2	[3]
Total assets	539		19
Liabilities
Interest rate swap	16	[4]	10	[4]
Foreign exchange contracts	4	[4]	1	[4]
Total liabilities	20		11
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets
Deposits held in money market funds	527	[1]	9	[1]
Available for sale securities	11	[2]	8	[2]
Foreign exchange contracts	0	[3]	0	[3]
Total assets	538		17
Liabilities
Interest rate swap	0	[4]	0	[4]
Foreign exchange contracts	0	[4]	0	[4]
Total liabilities	0		0
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets
Deposits held in money market funds	0	[1]	0	[1]
Available for sale securities	0	[2]	0	[2]
Foreign exchange contracts	1	[3]	2	[3]
Total assets	1		2
Liabilities
Interest rate swap	16	[4]	10	[4]
Foreign exchange contracts	4	[4]	1	[4]
Total liabilities	20		11
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets
Deposits held in money market funds	0	[1]	0	[1]
Available for sale securities	0	[2]	0	[2]
Foreign exchange contracts	0	[3]	0	[3]
Total assets	0		0
Liabilities
Interest rate swap	0	[4]	0	[4]
Foreign exchange contracts	0	[4]	0	[4]
Total liabilities	$ 0		$ 0

[1] Included in Cash and cash equivalents in the Consolidated Balance Sheets.

[2] Included in Other assets in the Consolidated Balance Sheets.

[3] Included in Other current assets in the Consolidated Balance Sheets.

[4] Included in Other current liabilities and Other liabilities in the Consolidated Balance Sheets.