Debt - Additional Information (Details) $ / shares in Units, € in Millions, £ in Millions, $ in Millions, $ in Millions							1 Months Ended		3 Months Ended			9 Months Ended			12 Months Ended
	Sep. 25, 2023	Aug. 14, 2023 USD ($)	Aug. 01, 2022 USD ($) $ / shares shares	Jan. 26, 2022 USD ($) $ / shares	Feb. 03, 2021 USD ($)	Feb. 05, 2020 USD ($)	Nov. 30, 2019 USD ($)	Jan. 31, 2018 USD ($)	Sep. 30, 2023 USD ($)		Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)		Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)		Dec. 31, 2020 USD ($)	Sep. 30, 2023 AUD ($)	Sep. 30, 2023 GBP (£)	Sep. 30, 2023 CAD ($)	Sep. 30, 2023 EUR (€)	Jun. 30, 2023 USD ($)	Jun. 12, 2023 USD ($)	Mar. 31, 2023 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jun. 30, 2018 USD ($)	Feb. 28, 2017 USD ($)
Debt Instrument [Line Items]
Asset coverage percentage									187.30%			187.30%			188.60%			187.30%	187.30%	187.30%	187.30%
Aggregate principal amount									$ 2,657,500,000			$ 2,657,500,000			$ 2,382,500,000
Line of credit facility, remaining borrowing capacity									951,572,000	[1]		951,572,000	[1]		865,672,000	[2]
Stockholders' equity									$ 1,485,822,000		$ 1,328,052,000	$ 1,485,822,000		$ 1,328,052,000	1,341,569,000							$ 1,460,529,000		$ 1,356,005,000	$ 1,241,959,000	$ 1,283,985,000	$ 1,275,848,000
2022 Convertible Notes
Debt Instrument [Line Items]
Aggregate principal amount			$ 79,200,000																										$ 115,000,000
Debt instrument, interest rate									4.50%			4.50%						4.50%	4.50%	4.50%	4.50%
Additional aggregate principal amount																												$ 57,500,000
Debt instrument, maturity date												Aug. 01, 2022
Debt instrument, conversion price | $ / shares			$ 17.92	$ 20
Debt instrument, principal converted amount			$ 77,600,000
Debt conversion, shares Issued | shares			4,360,125
Debt conversion principal amount				$ 1,000,000
2023 Notes
Debt Instrument [Line Items]
Aggregate principal amount								$ 150,000,000							$ 150,000,000
Debt instrument, interest rate								4.50%							4.50%
Debt instrument, maturity date								Jan. 22, 2023
Proceeds from issuance of debt, net of underwriting discount, offering costs and original issue discount								$ 146,900,000
2023 Notes | LIBOR
Debt Instrument [Line Items]
Debt instrument, description of variable rate basis															three month LIBOR
Debt Instrument, basis spread on variable rate															1.99%
2024 Notes
Debt Instrument [Line Items]
Aggregate principal amount						$ 50,000,000	$ 300,000,000		$ 347,500,000			$ 347,500,000			$ 347,500,000		$ 2,400,000
Debt instrument, interest rate							3.875%		3.88%			3.88%			3.88%			3.88%	3.88%	3.88%	3.88%
Debt instrument, maturity date						Nov. 01, 2024	Nov. 01, 2024
Derivative maturity date						Nov. 01, 2024
Extinguishment of debt, amount																	$ 2,500,000
Proceeds from issuance of debt, net of underwriting discount, offering costs and original issue discount						$ 50,100,000	$ 292,900,000
Notional amount of interest rate swap						$ 50,000,000	$ 300,000,000
Gain (loss) on fair value effective hedge												$ (15,100,000)			$ (19,400,000)
2024 Notes | LIBOR
Debt Instrument [Line Items]
Debt instrument, description of variable rate basis															three month LIBOR
Debt Instrument, basis spread on variable rate															2.28%
2024 Notes | SOFR
Debt Instrument [Line Items]
Debt instrument, description of variable rate basis	SOFR											SOFR			SOFR
Debt Instrument, basis spread on variable rate	2.54%											2.54%			2.54%
2026 Notes
Debt Instrument [Line Items]
Aggregate principal amount					$ 300,000,000				$ 300,000,000			$ 300,000,000			$ 300,000,000
Debt instrument, interest rate					2.50%				2.50%			2.50%			2.50%			2.50%	2.50%	2.50%	2.50%
Debt instrument, maturity date					Aug. 01, 2026
Derivative maturity date					Aug. 01, 2026
Proceeds from issuance of debt, net of underwriting discount, offering costs and original issue discount					$ 293,700
Notional amount of interest rate swap					$ 300,000,000
Gain (loss) on fair value effective hedge												$ (34,700,000)			$ (35,700,000)
2026 Notes | LIBOR
Debt Instrument [Line Items]
Debt instrument, description of variable rate basis															three month LIBOR
Debt Instrument, basis spread on variable rate															1.91%
2026 Notes | SOFR
Debt Instrument [Line Items]
Debt instrument, description of variable rate basis	SOFR											SOFR			SOFR
Debt Instrument, basis spread on variable rate	2.17%											2.17%			2.17%
2028 Notes
Debt Instrument [Line Items]
Aggregate principal amount		$ 300,000,000							$ 300,000,000			$ 300,000,000
Debt instrument, interest rate		6.95%							6.95%			6.95%						6.95%	6.95%	6.95%	6.95%
Debt instrument, maturity date		Aug. 14, 2028
Derivative maturity date		Aug. 14, 2028
Proceeds from issuance of debt, net of underwriting discount, offering costs and original issue discount		$ 293,900
Notional amount of interest rate swap		$ 300,000,000
Gain (loss) on fair value effective hedge												$ (6,100,000)
2028 Notes | SOFR
Debt Instrument [Line Items]
Debt instrument, description of variable rate basis												SOFR			SOFR
Debt Instrument, basis spread on variable rate												2.99%			2.99%
2023 Notes, 2024 Notes, 2026 Notes and 2028 Notes
Debt Instrument [Line Items]
Proceeds from settlements of interest rate swaps excluding upfront fees									$ 7,700,000		7,000,000	$ 18,700,000		20,900,000
Payments for settlements of interest rate swaps excluding upfront fees									15,500,000		$ 8,700,000	(39,200,000)		$ 19,600,000
Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility maximum borrowing capacity									1,465,000,000			1,465,000,000											$ 1,710,000,000	$ 1,585,000,000
Aggregate principal amount									1,710,000,000			1,710,000,000			$ 1,585,000,000
Line of credit facility, remaining borrowing capacity									951,572,000	[1]		951,572,000	[1]		865,672,000	[2]
Line of credit, outstanding amount																		$ 66.9	£ 32.5	$ 100.2	€ 37.7
Issuance of letters of credit									$ 200,000			$ 200,000
Line of credit facility, undrawn amount percentage												0.375%
Percentage of net proceeds of sale of equity interests												25.00%
Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Line of credit facility maximum borrowing capacity																							$ 2,000,000,000
Issuance of letters of credit															$ 100,000
Interest amount												1.875%
Asset coverage ratio									1.5			1.5						1.5	1.5	1.5	1.5
Revolving Credit Facility | Maximum | Base Rate
Debt Instrument [Line Items]
Line of credit facility, base rate percentage									0.875%			0.875%						0.875%	0.875%	0.875%	0.875%
Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Interest amount												1.75%
Stockholders' equity									$ 500,000,000			$ 500,000,000
Revolving Credit Facility | Minimum | Obligor Group
Debt Instrument [Line Items]
Asset coverage ratio									2			2						2	2	2	2
Revolving Credit Facility | Minimum | Base Rate
Debt Instrument [Line Items]
Line of credit facility, base rate percentage									0.75%			0.75%						0.75%	0.75%	0.75%	0.75%
Revolving Credit Facility Maturity on April 23, 2027
Debt Instrument [Line Items]
Line of credit facility, stated maturity date												Apr. 23, 2027
Line of credit facility, remaining borrowing capacity									$ 170,000,000			$ 170,000,000
Line of credit facility, expiration date												Apr. 24, 2026
Revolving Credit Facility Maturity on June 12, 2028
Debt Instrument [Line Items]
Line of credit facility, extended date												Jun. 11, 2027
Line of credit facility, stated maturity date												Jun. 12, 2028
Line of credit facility, remaining borrowing capacity									245,000,000			$ 245,000,000
Revolving Credit Facility Maturity on January 31, 2025
Debt Instrument [Line Items]
Line of credit facility, stated maturity date												Jan. 31, 2025
Line of credit facility, remaining borrowing capacity									25,000,000			$ 25,000,000
Line of credit facility, expiration date												Jan. 31, 2024
Revolving Credit Facility Maturity on February 4, 2026
Debt Instrument [Line Items]
Line of credit facility, stated maturity date												Feb. 04, 2026
Line of credit facility, remaining borrowing capacity									50,000,000			$ 50,000,000
Line of credit facility, expiration date												Feb. 04, 2025
Letter of Credit
Debt Instrument [Line Items]
Line of credit facility maximum borrowing capacity									$ 75,000,000			$ 75,000,000

[1] The amount available may be subject to limitations related to the borrowing base under the Revolving Credit Facility and asset coverage requirements.

[2] The amount available may be subject to limitations related to the borrowing base under the Revolving Credit Facility and asset coverage requirements.