Earnings (Loss) per Share - Schedule of Antidilutive Securities Excluded From Computation of Earnings Per Share (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]
Assumed conversion of convertible debt (in shares)	14.1	0.0	14.1	0.0
Employee Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive stock options and dilutive RSAs (in shares)		1.5		1.8
Restricted stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive stock options and dilutive RSAs (in shares)		0.2		0.3
Convertible Preferred Shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Assumed conversion of convertible preferred shares (in shares)		0.8		0.6
Convertible debt securities
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Assumed conversion of convertible debt (in shares)		7.9		4.0