Impact of COVID-19 - COVID-19 Relief Funding (Details) - USD ($)			5 Months Ended		6 Months Ended		9 Months Ended		12 Months Ended
	Feb. 02, 2022	Apr. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Sep. 28, 2020
Unusual Risk or Uncertainty [Line Items]
Long-term debt, gross									$ 431,000,000	$ 423,000,000
Principal repayments on debt									266,000,000	97,000,000	$ 126,000,000
Interest paid									14,000,000	9,000,000	7,000,000
Mark to market adjustment on warrant									0	22,000,000	$ 9,000,000
Employee retention credit									17,000,000	16,000,000
The Coronavirus Aid, Relief, and Economic Security Act | PSP1 Promissory Note
Unusual Risk or Uncertainty [Line Items]
Funding received				$ 211,000,000
Proceeds from Payroll Support Program grant						$ 178,000,000				178,000,000
Deferred financing costs										1,000,000
The Coronavirus Aid, Relief, and Economic Security Act | Consolidated Appropriations Act of 2021 - PSP 2
Unusual Risk or Uncertainty [Line Items]
Funding received							$ 161,000,000
Proceeds from Payroll Support Program grant									$ 143,000,000	143,000,000
The American Rescue Plan Act | American Rescue Plan Act - PSP 3
Unusual Risk or Uncertainty [Line Items]
Funding received			$ 150,000,000
Proceeds from Payroll Support Program grant					$ 135,000,000
CARES Act Credit Agreement, Warrants
Unusual Risk or Uncertainty [Line Items]
Warrants to acquire common stock (in shares)												3,117,940
Exercise price of warrants (in dollars per share)												$ 6.95
Warrants exercised (in shares)									0
Unsecured Debt | PSP1 Promissory Note
Unusual Risk or Uncertainty [Line Items]
Term of grant		10 years				10 years					10 years
Unsecured low interest loan amount		$ 33,000,000
Unsecured Debt | Consolidated Appropriations Act of 2021 - PSP 2
Unusual Risk or Uncertainty [Line Items]
Term of grant									10 years
Unsecured low interest loan amount								$ 18,000,000
Unsecured Debt | PSP3 Promissory Note
Unusual Risk or Uncertainty [Line Items]
Term of grant									10 years
Unsecured low interest loan amount								$ 15,000,000
Line of Credit | CARES Credit Agreement
Unusual Risk or Uncertainty [Line Items]
Term loan amount												$ 574,000,000
Long-term debt, gross									$ 150,000,000	$ 150,000,000
Principal repayments on debt	$ 150,000,000
Interest paid	$ 1,000,000