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Other Non-Current Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Other Assets Noncurrent Disclosure [Abstract]    
Cash surrender value of company-owned life insurance policies $ 54.3 $ 53.9
Fair value of derivative assets 9.6 8.7
Other 4.6 1.7
Total other non-current assets $ 68.5 $ 64.3