XML 19 R7.htm IDEA: XBRL DOCUMENT v3.21.1
Condensed Consolidated Statements of Cash Flow Parenthetical - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Statement of Cash Flows [Abstract]    
Capitalized interest costs $ 10.2 $ 7.5