Schedule II (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Valuation And Qualifying Accounts Disclosure [Line Items]
Valuation Allowances and Reserves, Balance	$ 112	$ 119	$ 116	$ 125
Net (credits) charges to expenses	5	14	11
Valuation Allowances and Reserves, Deductions	12	7	13
Valuation Allowances and Reserves, Charged to Other Accounts	$ 0	$ (4)	$ (7)

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Article 12

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690

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