(Loss) Earnings per Share - Calculation of Basic and Diluted (Loss) Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator:
Numerator for basic EPS - Net (loss) income	$ (378,000)	$ 131,000	$ (697,000)	$ 149,000
Effect of dilutive securities:
Interest expense associated with convertible debt instruments	0	9,000	0	9,000
Numerator for basic EPS - net (loss) income available to common stockholders after the effect of dilutive securities	(378,000)	140,000	(697,000)	158,000
Numerator for diluted EPS - net (loss) income available to common stockholders after the effect of dilutive securities	$ (378,000)	$ 140,000	$ (697,000)	$ 158,000
Denominator:
Denominator for basic EPS - weighted average number of shares of common stock outstanding (in shares)	105	104	105	103
Effect of dilutive securities:
Convertible debt instruments (in shares)	0	15	0	12
Dilutive potential common shares (in shares)	0	18	0	16
Denominator for diluted EPS - adjusted weighted-average number of shares of common stock outstanding after the effect of dilutive securities (in shares)	105	122	105	119
(Loss) Earnings per Share:
Basic (in usd per share)	$ (3.59)	$ 1.26	$ (6.62)	$ 1.44
(Loss) Earnings per Share:
Diluted (in usd per share)	$ (3.59)	$ 1.14	$ (6.62)	$ 1.33
Restricted stock units
Effect of dilutive securities:
Incremental common shares attributable to dilutive effect of share-based payment award (in shares)	0	3	0	4