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Debt - Narrative (Details)				1 Months Ended	3 Months Ended		9 Months Ended		80 Months Ended
	Apr. 26, 2023	Feb. 09, 2021 USD ($)	Dec. 01, 2020 USD ($)	Nov. 09, 2023 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Feb. 15, 2028 USD ($)	Dec. 31, 2022 USD ($)
Debt Instrument [Line Items]
Repayment of debt							$ 151,800,000	$ 17,300,000
Gain on debt extinguishment					$ 55,400,000	$ 0	163,100,000	$ 0
One- Month Duration SOFR
Debt Instrument [Line Items]
Credit spread adjustment	0.11%
Three- Month Duration SOFR
Debt Instrument [Line Items]
Credit spread adjustment	0.26%
Six- Months Duration SOFR
Debt Instrument [Line Items]
Credit spread adjustment	0.43%
Fed Funds Effective Rate Overnight Index Swap Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.50%
Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.00%
Term loan facility
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate floor	0.75%
Interest payment period (not exceed)	90 days
Term loan facility | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.75%
Term loan facility | Base rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.75%
Line of credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount					3,500,000		3,500,000
Line of credit | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 375,000,000			375,000,000		375,000,000
Debt instrument, basis spread on variable rate floor	1.00%
Unused commitment fee percentage		0.50%
Borrowings from long-term lines of credit					50,000,000		50,000,000
Outstanding borrowings					0		0
Remaining commitments					$ 375,000,000		$ 375,000,000
Line of credit | Revolving Credit Facility | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	3.00%
Line of credit | Revolving Credit Facility | Base rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.00%
Term Loan Facility | Term loan facility
Debt Instrument [Line Items]
Debt instrument, term		7 years
Aggregate principal amount		$ 2,300,000,000
Effective interest rate					8.19%		8.19%			7.38%
Principal balance					$ 2,242,500,000		$ 2,242,500,000			$ 2,259,800,000
Fair value of debt					1,009,100,000		1,009,100,000
Term Loan Facility | Term loan facility | Affiliates of ABRY | Affiliated entity
Debt Instrument [Line Items]
Principal balance					$ 58,500,000		$ 58,500,000
Percentage of debt due to related party					2.60%		2.60%
Term Loan Facility | Term loan facility | Apollo Global Management Inc | Affiliated entity
Debt Instrument [Line Items]
Principal balance					$ 24,300,000		$ 24,300,000
Percentage of debt due to related party					1.10%		1.10%
Term Loan Facility | Term loan facility | Forecast | Subsequent event
Debt Instrument [Line Items]
Quarterly principal payment									$ 5,800,000
3.50% Senior Secured Notes | Senior notes
Debt Instrument [Line Items]
Aggregate principal amount		$ 550,000,000
Interest rate		3.50%			3.50%		3.50%			3.50%
Principal balance					$ 550,000,000.0		$ 550,000,000.0			$ 550,000,000.0
Fair value of debt					$ 247,500,000		$ 247,500,000
Redemption price, percentage		101.00%
3.50% Senior Secured Notes | Senior notes | Prior to February 15, 2024
Debt Instrument [Line Items]
Redemption price, percentage		100.00%
Percent of redeemable debt (up to)		40.00%
3.50% Senior Secured Notes | Senior notes | From February 15, 2024 to February 14, 2025
Debt Instrument [Line Items]
Redemption price, percentage		101.75%
3.50% Senior Secured Notes | Senior notes | From February 15, 2025 to February 14, 2026
Debt Instrument [Line Items]
Redemption price, percentage		100.875%
3.50% Senior Secured Notes | Senior notes | from February 15, 2026 and thereafter
Debt Instrument [Line Items]
Redemption price, percentage		100.00%
3.50% Senior Secured Notes | Senior notes | Commencing with February 9
Debt Instrument [Line Items]
Redemption price, percentage		103.00%
Percent of redeemable debt (up to)		10.00%
Senior Facilities | Line of credit | Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, leverage ratio, maximum		5.00
Debt instrument, covenant, undrawn letters of credit and cash collateralized letters of credit excluded from threshold trigger		$ 25,000,000
Debt instrument, covenant, percentage of outstanding borrowings trigger, minimum		35.00%
Forty Percent Of 3.50% Senior Secured Notes Due 2028 | Senior notes | Prior to February 15, 2024
Debt Instrument [Line Items]
Redemption price, percentage		103.50%
5.375% Senior Notes | Senior notes
Debt Instrument [Line Items]
Aggregate principal amount			$ 550,000,000
Interest rate			5.375%		5.375%		5.375%			5.375%
Principal balance					$ 300,000,000.0		$ 300,000,000.0			$ 550,000,000.0
Percent of redeemable debt (up to)			40.00%
Principal amount repurchased and surrendered for cancellation					85,200,000		250,000,000
Repayment of debt					29,800,000		86,600,000
Accrued interest increase					800,000		2,100,000
Gain on debt extinguishment					55,400,000		163,100,000
Write-off of associated unamortized deferred financing fees					800,000		2,400,000
Fair value					$ 96,000,000		$ 96,000,000
5.375% Senior Notes | Senior notes | Subsequent event
Debt Instrument [Line Items]
Principal amount repurchased and surrendered for cancellation				$ 24,400,000
Repayment of debt				8,900,000
Accrued interest increase				$ 400,000
5.375% Senior Notes | Senior notes | Prior to December 1, 2023
Debt Instrument [Line Items]
Redemption price, percentage			100.00%
5.375% Senior Notes | Senior notes | December 1, 2023 to November 30, 2024
Debt Instrument [Line Items]
Redemption price, percentage			102.688%
5.375% Senior Notes | Senior notes | December 1, 2024 to November 30, 2025
Debt Instrument [Line Items]
Redemption price, percentage			101.344%
5.375% Senior Notes | Senior notes | December 1, 2025 and thereafter
Debt Instrument [Line Items]
Redemption price, percentage			100.00%
5.375% Senior Notes | Senior notes | Upon change of control
Debt Instrument [Line Items]
Redemption price, percentage			101.00%
Forty Percent Of Senior Notes, 5.375%, Due 2028 | Senior notes | Prior to December 1, 2023
Debt Instrument [Line Items]
Redemption price, percentage			105.375%

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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