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Income Taxes - Provision for Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jul. 01, 2017
Jul. 02, 2016
Jul. 01, 2017
Jul. 02, 2016
Income Tax Disclosure [Abstract]        
Provision for income taxes $ 73.3 $ 101.0 $ 162.4 $ 199.2
Pretax income before equity in net income of affiliates $ 381.9 $ 376.0 $ 774.1 $ 719.9
Effective tax rate 19.20% 26.90% 21.00% 27.70%