XML 20 R8.htm IDEA: XBRL DOCUMENT v3.21.2
Condensed Consolidated Statements of Cash Flows (Parentheticals) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Statement of Cash Flows [Abstract]    
Asset retirement obligation $ 2.0 $ 3.1
Cash paid for interest, net of capitalized interest 85.0 104.2
Income taxes paid, net of refunds 87.2 63.3
Non-cash additions to property, plant and equipment $ 14.0 $ 15.3