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Interest and Other, Net (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Nonoperating Income (Expense) [Abstract]      
Interest income $ 97 $ 125 $ 102
Interest expense (144) (109) (95)
Gains (losses) associated with cost and equity method investments 268 33 82
Other (12) (10) 28
Interest and other, net $ 209 $ 39 $ 117