Segment Information - Reconciliation of segment adjusted operating income (loss) to net income (loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of segment adjusted operating income (loss) to net income (loss) from continuing operations before income taxes:
Net income (loss)	$ (307,218)	$ (543,690)	$ (762,846)
Income (loss) from discontinued operations, net of tax		20	7
Income (loss) from continuing operations, net of tax	(307,218)	(543,710)	(762,853)
Income tax expense (benefit)	61,536	55,621	57,286
Income (loss) from continuing operations before income taxes	(245,682)	(488,089)	(705,567)
Investment (income) loss	(14,992)	(1,557)	(1,438)
Interest expense	177,895	171,476	206,274
(Gain)/loss on debt buybacks and exchanges	4,597	13,423	228,274
Impairments and other charges		66,731	410,631
Other, net	131,696	53,421	28,567
Total segment adjusted operating income (loss)	194,414	(80,787)	(171,461)
Operating segments
Reconciliation of segment adjusted operating income (loss) to net income (loss) from continuing operations before income taxes:
Net income (loss)	(307,218)	(543,690)	(762,846)
Income (loss) from discontinued operations, net of tax		(20)	(7)
Income (loss) from continuing operations, net of tax	(307,218)	(543,710)	(762,853)
Income tax expense (benefit)	61,536	55,621	57,286
Income (loss) from continuing operations before income taxes	(245,682)	(488,089)	(705,567)
Investment (income) loss	(14,992)	(1,557)	(1,438)
Interest expense	177,895	171,476	206,274
(Gain)/loss on debt buybacks and exchanges	(4,597)	(13,423)	(228,274)
Impairments and other charges		(66,731)	(410,631)
Other, net	131,696	53,421	28,567
Total segment adjusted operating income (loss)	194,414	(80,787)	(171,461)
Other reconciling items
Reconciliation of segment adjusted operating income (loss) to net income (loss) from continuing operations before income taxes:
Other reconciling items	$ 150,094	$ 130,654	$ 118,346