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Income Taxes - Schedule of Income before Income Taxes (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Tax Disclosure [Abstract]      
Income before income taxes, domestic $ 284 $ 400 $ 396
Income before income taxes, foreign 324 287 417
Income before income taxes $ 608 $ 687 $ 813