Repurchase Agreements, net - Schedule of Repurchase Agreements (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2026	Dec. 31, 2025
Assets Sold under Agreements to Repurchase [Line Items]
Balance	$ 19,441,457	$ 17,941,796
Weighted Average Contractual Rate	3.77%	4.01%
Weighted Average Maturity in days	24 days	15 days
≤ 30 days
Assets Sold under Agreements to Repurchase [Line Items]
Balance	$ 14,716,831	$ 17,941,796
Weighted Average Contractual Rate	3.76%	4.01%
Weighted Average Maturity in days	14 days	15 days
> 30 days to ≤ 60 days
Assets Sold under Agreements to Repurchase [Line Items]
Balance	$ 3,157,770
Weighted Average Contractual Rate	3.77%
Weighted Average Maturity in days	42 days
> 60 days to ≤ 90 days
Assets Sold under Agreements to Repurchase [Line Items]
Balance	$ 1,056,964
Weighted Average Contractual Rate	3.79%
Weighted Average Maturity in days	77 days
> 90 days
Assets Sold under Agreements to Repurchase [Line Items]
Balance	$ 509,892
Weighted Average Contractual Rate	3.80%
Weighted Average Maturity in days	101 days