Debt (Tables)

9 Months Ended

Sep. 30, 2021

Debt Disclosure [Abstract]

Schedule of Fair Value, by Balance Sheet Grouping

The following table presents the carrying value, net of unamortized debt issuance costs and discounts or premiums, and the estimated fair value of our total debt, not including the effect of unamortized debt issuance costs, respectively:

	Successor				Predecessor
	September 30, 2021				December 31, 2020
	Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value
Senior secured notes:
11.000% Second Lien Notes due February 2028	$	216,000	$	239,071	$	—	$	—
Senior unsecured notes:
4.900% Senior Notes due August 2020	—		—		62,535		1,366
4.625% Senior Notes due March 2021	—		—		79,936		1,596
3.950% Senior Notes due March 2022	—		—		21,213		354
7.750% Senior Notes due January 2024	—		—		397,025		7,925
7.950% Senior Notes due April 2025	—		—		450,000		8,348
7.875% Senior Notes due February 2026	—		—		750,000		301,935
6.200% Senior Notes due August 2040	—		—		393,596		7,966
6.050% Senior Notes due March 2041	—		—		395,002		7,327
5.250% Senior Notes due March 2042	—		—		483,619		9,701
8.950% Senior Notes due April 2045	—		—		400,000		7,420
Credit facility:
Senior Secured Revolving Credit Facility matures July 2025	190,000		190,000		—		—
2017 Credit Facility matures January 2023	—		—		545,000		545,000
Total debt	406,000		429,071		3,977,926		898,938
Less: Current maturities of long-term debt	—		—		—		—
Long-term debt	$	406,000	$	429,071	$	—	$	—