Debt Obligations - Summary of Repurchase Agreements (Details) - USD ($) $ in Thousands		6 Months Ended		12 Months Ended
		Jun. 30, 2024		Dec. 31, 2023
Repurchase Agreement Counterparty [Line Items]
Borrowing Outstanding and Carrying Value		$ 3,620,694		$ 3,805,678
Carrying Value of Collateral		183,992		340,069
Repurchase Agreements and Term Participation Facility [Member]
Repurchase Agreement Counterparty [Line Items]
Maximum Capacity		5,161,713		5,055,465
Borrowing Outstanding and Carrying Value		3,620,694		3,805,678
Undrawn Capacity		1,541,019		1,249,787
Carrying Value of Collateral		$ 5,166,561	[1]	$ 5,369,552	[2]
Repurchase Agreements and Term Participation Facility [Member] | JP Morgan Chase Bank NA [Member]
Repurchase Agreement Counterparty [Line Items]
Initial Maturity		Jul. 28, 2026		Jul. 28, 2026
Fully Extended Maturity		Jul. 28, 2028	[3]	Jul. 28, 2028	[4]
Maximum Capacity		$ 2,411,713		$ 1,905,465
Borrowing Outstanding and Carrying Value		2,268,143		1,672,878
Undrawn Capacity		143,570		232,587
Carrying Value of Collateral		$ 3,284,536	[1]	$ 2,257,442	[2]
Repurchase Agreements and Term Participation Facility [Member] | Morgan Stanley Bank NA [Member]
Repurchase Agreement Counterparty [Line Items]
Initial Maturity		Jan. 26, 2025		Jan. 26, 2024	[5]
Fully Extended Maturity		Jan. 26, 2025	[3]	Jan. 26, 2025	[4]
Maximum Capacity		$ 1,000,000		$ 1,000,000	[5]
Borrowing Outstanding and Carrying Value		549,169		735,393	[5]
Undrawn Capacity		450,831		264,607	[5]
Carrying Value of Collateral		$ 798,327	[1]	$ 1,023,295	[2]
Repurchase Agreements and Term Participation Facility [Member] | Goldman Sachs Bank USA [Member]
Repurchase Agreement Counterparty [Line Items]
Initial Maturity		May 31, 2025		May 31, 2025	[5]
Fully Extended Maturity		May 31, 2027	[3]	May 31, 2027	[4]
Maximum Capacity		$ 500,000		$ 500,000
Borrowing Outstanding and Carrying Value		143,215		175,755
Undrawn Capacity		356,785		324,245
Carrying Value of Collateral		$ 187,802	[1]	$ 286,623	[2]
Repurchase Agreements and Term Participation Facility [Member] | Barclays Bank PLC [Member]
Repurchase Agreement Counterparty [Line Items]
Initial Maturity		Dec. 20, 2024		Dec. 20, 2024
Fully Extended Maturity		Dec. 20, 2025	[3]	Dec. 20, 2025	[4]
Maximum Capacity		$ 500,000		$ 500,000
Borrowing Outstanding and Carrying Value		0		135,129
Undrawn Capacity		500,000		364,871
Carrying Value of Collateral		$ 0	[1]	$ 250,823	[2]
Repurchase Agreements and Term Participation Facility [Member] | Deutsche Bank AG New York Branch [Member]
Repurchase Agreement Counterparty [Line Items]
Initial Maturity				Jun. 26, 2024
Fully Extended Maturity	[4]			Jun. 26, 2026
Maximum Capacity				$ 400,000
Borrowing Outstanding and Carrying Value				359,646
Undrawn Capacity				40,354
Carrying Value of Collateral	[2]			$ 611,741
Repurchase Agreements and Term Participation Facility [Member] | Wells Fargo Bank NA [Member]
Repurchase Agreement Counterparty [Line Items]
Initial Maturity		Sep. 29, 2024		Sep. 29, 2024
Fully Extended Maturity		Sep. 29, 2026	[3]	Sep. 29, 2026	[4]
Maximum Capacity		$ 750,000		$ 750,000
Borrowing Outstanding and Carrying Value		660,167		726,877
Undrawn Capacity		89,833		23,123
Carrying Value of Collateral		$ 895,896	[1]	$ 939,628	[2]

[1] Net of specific CECL reserves, if any.

[2] Net of specific CECL reserves, if any.

[3] Facility maturity dates may be extended, subject to meeting prescribed conditions.

[4] Facility maturity dates may be extended, subject to meeting prescribed conditions.

[5] Assumes as of right extension is exercised, subject to meeting prescribed conditions.