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Condensed Consolidated Statements of Cash Flows (Parentheticals) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Statement of Cash Flows [Abstract]    
Asset retirement obligation $ 3.2 $ 0.8
Cash paid for interest, net of capitalized interest 61.2 60.1
Income taxes paid, net of refunds 53.2 65.2
Non-cash additions to property, plant and equipment $ 24.5 $ 15.0