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Noncontrolling interests (Effect on Net Income Attributable to Company for Purchases of Noncontrolling Interests) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Noncontrolling Interest [Abstract]      
Net income attributable to Crown Holdings $ 496 $ 393 $ 390
Transfers to noncontrolling interests – decrease in paid-in-capital for purchase of noncontrolling interests 0 (3) (54)
Net income attributable to Crown Holdings after transfers to noncontrolling interests $ 496 $ 390 $ 336