Debt - Additional Information (Details) € in Millions, £ in Millions, kr in Millions				3 Months Ended
	Mar. 04, 2024 USD ($)	Feb. 08, 2024 USD ($)	Jan. 09, 2023 USD ($)	Mar. 31, 2024 USD ($)		Apr. 08, 2024 USD ($)	Mar. 31, 2024 GBP (£)	Mar. 31, 2024 EUR (€)	Mar. 31, 2024 SEK (kr)	Dec. 31, 2023 USD ($)		Dec. 31, 2023 GBP (£)	Dec. 31, 2023 EUR (€)	Dec. 01, 2023 USD ($)	Jul. 27, 2023 USD ($)	Apr. 27, 2023 USD ($)	Mar. 31, 2023 USD ($)	Mar. 28, 2023 USD ($)	Feb. 28, 2023 USD ($)	Jan. 27, 2023 USD ($)	Jan. 18, 2023 USD ($)	Dec. 31, 2022 USD ($)	Sep. 01, 2022 USD ($)
Debt Instrument [Line Items]
Asset coverage percentage				223.40%			223.40%	223.40%	223.40%	245.60%		245.60%	245.60%
Aggregate principal amount				$ 3,100,000,000						$ 2,225,000,000
Line of credit facility maximum borrowing capacity															$ 725,000,000
Line of credit facility, remaining borrowing capacity				1,158,630,000	[1]					971,485,000	[2]
Shareholders' equity				2,380,563,000						1,817,067,000							$ 812,319,000					$ 546,711,000
2029 Notes
Debt Instrument [Line Items]
Aggregate principal amount	$ 600,000,000			$ 600,000,000
Debt instrument, interest rate	6.50%			6.50%			6.50%	6.50%	6.50%
Debt instrument, maturity date	Mar. 11, 2029
Derivative maturity date	Mar. 11, 2029
Proceeds from settlements of interest rate swaps excluding upfront fees				$ 1,500,000
Payments for settlements of interest rate swaps excluding upfront fees				1,800,000
Proceeds from issuance of debt, net of underwriting discount and offering costs	$ 586,000,000
Notional amount of interest rate swap	$ 600,000,000
Gain (loss) on fair value effective hedge				$ (900,000)
2029 Notes | SOFR
Debt Instrument [Line Items]
Debt Instrument, basis spread on variable rate				2.51%
Debt instrument, description of variable rate basis				SOFR
Subscription Facility
Debt Instrument [Line Items]
Aggregate principal amount				$ 1,500,000,000						1,500,000,000
Line of credit facility maximum borrowing capacity														$ 1,500,000,000		$ 1,350,000,000		$ 1,300,000,000		$ 850,000,000	$ 800,000,000	$ 700,000,000	$ 400,000,000
Line of credit facility, stated maturity date				Aug. 30, 2024
Optional extension period of maturity date of line of credit facility				364 days
Line of credit facility, remaining borrowing capacity				$ 961,365,000	[1]					445,267,000	[2]
Line of credit, outstanding amount							£ 10.3	€ 10.3				£ 10.3	€ 13.4
Issuance of letters of credit				$ 0						0
Line of credit facility, undrawn amount percentage				0.25%
Subscription Facility | Adjusted Daily SOFR
Debt Instrument [Line Items]
Debt Instrument, basis spread on variable rate				1.95%
Subscription Facility | Adjusted Term SOFR
Debt Instrument [Line Items]
Debt Instrument, basis spread on variable rate				1.95%
Subscription Facility | Prime Rate
Debt Instrument [Line Items]
Debt instrument, interest rate				0.95%			0.95%	0.95%	0.95%
Subscription Facility | Federal Funds Rate
Debt Instrument [Line Items]
Debt Instrument, basis spread on variable rate				0.50%
Subscription Facility | Eurocurrency Rate
Debt Instrument [Line Items]
Debt Instrument, basis spread on variable rate				1.95%
Subscription Facility | SONIA
Debt Instrument [Line Items]
Interest amount				0.0326%
Debt Instrument, basis spread on variable rate				1.95%
Subscription Facility | Minimum | SOFR
Debt Instrument [Line Items]
Interest amount				0.10%
Subscription Facility | Maximum | SOFR
Debt Instrument [Line Items]
Interest amount				0.25%
Subscription Facility | Maximum | Adjusted Daily SOFR
Debt Instrument [Line Items]
Debt Instrument, basis spread on variable rate				1.00%
Revolving Credit Facility
Debt Instrument [Line Items]
Aggregate principal amount				$ 1,000,000,000						725,000,000
Line of credit facility maximum borrowing capacity		$ 1,000,000,000	$ 600,000,000			$ 1,200,000,000													$ 700,000,000
Line of credit facility maximum borrowing capacity under certain circumstances		$ 1,750,000,000	$ 1,000,000,000
Line of credit facility, stated maturity date		Feb. 08, 2029
Line of credit facility, remaining borrowing capacity				197,265,000	[1]					526,218,000	[2]
Line of credit, outstanding amount							£ 60.9	€ 81.5	kr 78.1			£ 68.7	€ 95.7
Issuance of letters of credit				5,500,000						$ 5,500,000
Line of credit facility, undrawn amount percentage			0.375%
Shareholders' equity				$ 1,100,000
Percentage of net proceeds of sale of equity interests				25.00%
Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Asset coverage ratio				1			1	1	1
Revolving Credit Facility | Minimum | Adjusted Term SOFR
Debt Instrument [Line Items]
Debt Instrument, basis spread on variable rate			1.75%
Revolving Credit Facility | Minimum | Alternative Base Rate
Debt Instrument [Line Items]
Debt Instrument, basis spread on variable rate			1.75%
Revolving Credit Facility | Minimum | Specified Relevant Rate
Debt Instrument [Line Items]
Debt Instrument, basis spread on variable rate			1.75%
Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Asset coverage ratio				1.5			1.5	1.5	1.5
Revolving Credit Facility | Maximum | Adjusted Term SOFR
Debt Instrument [Line Items]
Debt Instrument, basis spread on variable rate			2.00%
Revolving Credit Facility | Maximum | Alternative Base Rate
Debt Instrument [Line Items]
Debt Instrument, basis spread on variable rate			2.00%
Revolving Credit Facility | Maximum | Specified Relevant Rate
Debt Instrument [Line Items]
Debt Instrument, basis spread on variable rate			2.00%
Letter of Credit
Debt Instrument [Line Items]
Issuance of letters of credit up to an aggregate amount				$ 175,000,000
Letter of Credit | Maximum
Debt Instrument [Line Items]
Percentage of commitment fee				10.00%

[1] The amount available may be subject to limitations related to the borrowing base under the Subscription Facility, Revolving Credit Facility, outstanding letters of credit issued and asset coverage requirements.

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