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Comprehensive Income and Equity - Common Stock Repurchase Program (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 87 Months Ended
Mar. 31, 2018
Apr. 01, 2017
Mar. 30, 2018
Equity [Abstract]      
Aggregate Repurchases (1) $ 155.4   $ 3,700.0
Cash paid for Repurchases $ 145.4 $ 115.6  
Number of Shares (in shares) 829,360    
Average Price per Share (in dollars per share) $ 187.41   $ 81.72
Remaining Purchase Authorization $ 1,349.6    
Stock repurchased during period, prior to increased authorization, amount $ 5.1