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Property and Equipment - Depreciation, Capitalized Interest Expense (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Property, Plant and Equipment [Abstract]      
Depreciation expense $ 130.0 $ 124.2 $ 111.8
Interest capitalized $ 8.3 $ 6.0 $ 3.7