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Other Financial Data - Schedule of Other Income (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Other Financial Data [Abstract] |  |  |
Equity earnings | $ 13 | $ 12 | $ 20
Net gain on disposals of businesses | 82 | 24 | 10
Foreign currency remeasurement gain | 30 | 18 | 13
(Loss) income on financial instruments | (24) | (15) | 18
Other | (1) | 5 | 7
Other income | $ 100 | $ 44 | $ 68

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