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Consolidated Statement of Changes in Members' Equity (Parenthetical) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Statement of Stockholders' Equity [Abstract]    
Income tax (benefit) expense $ 1.1 [1] $ (4.0)
[1] Includes a tax expense of $1.1 million and a tax benefit of $4.0 million for the three months ended March 31, 2021 and 2020, respectively.