Earnings per Share - Narrative (Details) - shares shares in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Amount of antidilutive securities not included in calculation of earnings per share (in shares)	0.4	4.6
Warrant
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Amount of antidilutive securities not included in calculation of earnings per share (in shares)	10.5	10.5
Employee Stock | 2021 Employee Stock Purchase Plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Amount of antidilutive securities not included in calculation of earnings per share (in shares)	0.1