Stockholders' Equity - Common Stock Tender Offer (Details) - USD ($)					3 Months Ended	12 Months Ended
	Mar. 16, 2021	Mar. 10, 2021	Jan. 28, 2021	Mar. 10, 2020	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Feb. 02, 2021
Class of Stock [Line Items]
Common stock, par value (in dollars per share)					$ 0.20	$ 0.20	$ 0.20
Common stock repurchased (in shares)			13,000,000	45,000,000		98,748,905	47,736,847	16,962,199
Average purchase price per share (in dollars per share)						$ 14.70	$ 10.93	$ 10.85
Common stock repurchased						$ 1,530,683,000	$ 558,167,000	$ 167,201,000
Shares cancelled (in shares)	28,500,000
Common Stock
Class of Stock [Line Items]
Common stock repurchased (in shares)						70,246,445	47,736,847	16,962,199
Common Stock
Class of Stock [Line Items]
Common stock, par value (in dollars per share)					$ 0.20	$ 0.20
Tender Offer | Common Stock
Class of Stock [Line Items]
Decrease to balance of common stock						$ 6,000,000
Tender Offer | Additional Paid-In Capital
Class of Stock [Line Items]
Decrease to balance of common stock						$ 466,000,000
Tender Offer | Common Stock
Class of Stock [Line Items]
Aggregate purchase price (not to exceed)									$ 1,000,000,000
Common stock, par value (in dollars per share)									$ 0.20
Common stock repurchased (in shares)		28,500,000
Average purchase price per share (in dollars per share)		$ 16.50
Common stock repurchased	$ 472,000,000
Rule 10b5-1 Trading Plan | Common Stock
Class of Stock [Line Items]
Common stock repurchased (in shares)						57,000,000
Payment for delivery of common stock					$ 1,100,000,000