Stockholders' Equity - Common Stock Activity (Details) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares outstanding at the beginning of the period	97,800,000	96,900,000	110,400,000
Shares issued for vested restricted stock units	1,000,000.0	1,300,000	1,500,000
Common Stock, shares issued (in shares)	176,300,000	140,500,000
Shares repurchased	(300,000)	(400,000)	(15,000,000.0)
Shares outstanding at the end of the period	133,300,000	97,800,000	96,900,000
Class of Stock [Line Items]
Common Stock, shares issued (in shares)	176,300,000	140,500,000
Debt for Equity Exchange
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, shares issued (in shares)	10,000,000	0	0
Class of Stock [Line Items]
Common Stock, shares issued (in shares)	10,000,000	0	0
At Market Issuance
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, shares issued (in shares)	24,800,000	0	0
Class of Stock [Line Items]
Common Stock, shares issued (in shares)	24,800,000	0	0