Earnings per Share - Narrative (Details) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
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)	0.0
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)		4.6	0.4	4.6
Employee Stock
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
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	10.5