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Consolidated Statements of Cash Flows (Parenthetical) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Statement of Cash Flows [Abstract]      
Capitalized interest $ 0.2 $ 2.3 $ 3.2
Tax refunds $ 3.0 $ 0.3 $ 4.3