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Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			12 Months Ended
	Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2012 Maximum	Dec. 31, 2013 Building Minimum	Dec. 31, 2013 Building Maximum	Dec. 31, 2013 All other assets Minimum	Dec. 31, 2013 All other assets Maximum
Investments
Investments held by subsidiary accounted for under cost method	$ 6		$ 6
Property, plant and equipment and depreciation
Useful life					10 years	50 years	3 years	20 years
Foreign currency transaction and translation
Cumulative translation loss adjustments	489		335
Foreign currency transaction losses	$ 3	$ 2		$ 1

Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

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