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Loss Per Share - Summary of Loss Per Share (Parenthetical) (Details) - shares
shares in Millions
10 Months Ended 12 Months Ended
Dec. 31, 2018
Dec. 31, 2020
Dec. 31, 2019
Earnings Per Share [Abstract]      
Warrants exercisable   1.0 6.2
Simple warrants exercisable 2.2 2.2 5.1
Performance warrants exercisable 2.0 1.1 4.5