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Long-Term Debt - Narrative (Details)		3 Months Ended		9 Months Ended
	Aug. 24, 2021 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Debt Instrument [Line Items]
Interest expense		$ 67,512,000	$ 82,275,000	$ 195,233,000	$ 259,290,000
Repayments of Term Loan G				$ 2,341,000,000	0
Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Redemption price, percentage				100.00%
Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Redemption price, percentage				105.50%
Percentage of principal amount that can be redeemed				40.00%
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity	$ 450,000,000
Term Loan G, net of discount
Debt Instrument [Line Items]
Repayments of Term Loan G	2,341,000,000
Term Loan G, net of discount | Secured Debt
Debt Instrument [Line Items]
Write off of debt discounts	2,700,000
Write off of debt issuance costs	6,400,000
Lender and third party fees	$ 6,700,000
Term Loan G, net of discount | Acceleration of debt issuance costs | Secured Debt
Debt Instrument [Line Items]
Interest expense					$ 2,300,000
Term Loan B
Debt Instrument [Line Items]
Secured debt issued with discount	0.0100
Term Loan B | Variable Rate Option 1
Debt Instrument [Line Items]
Debt instrument, basis spread, base rate				0.50%
Term Loan B | Variable Rate Option 2
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				4.25%
Term Loan B | Variable Rate Option 2 | Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread, base rate				0.50%
Term Loan B | Variable Rate Option 2 | LIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				1.00%
Term Loan B | Secured Debt
Debt Instrument [Line Items]
Debt instrument, face amount	$ 1,325,000,000
5.50% Senior Secured Notes | Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount	$ 1,050,000,000	$ 1,050,000,000		$ 1,050,000,000
Interest rate, stated percentage		5.50%		5.50%
Revolver B | Variable Rate Option 2 | Fed Funds Effective Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				0.50%
Revolver B | Variable Rate Option 2 | Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread, base rate				1.00%
Revolver B | Variable Rate Option 2 | LIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				1.00%
Revolver B | Variable Rate Option 2 | Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				3.50%
Revolver B | Variable Rate Option 2 | Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				4.00%
Revolver B | Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Commitment fee percentage				0.25%
Revolver B | Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Commitment fee percentage				0.50%
Senior Convertible PIK Notes | PIK Note | Cumulative Effect, Period of Adoption, Adjustment
Debt Instrument [Line Items]
Unamortized discount						$ 297,900,000

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