Borrowings from Secured and Unsecured Debt Financings - Narrative (Details) $ in Thousands	May 20, 2026 USD ($)	May 31, 2026 USD ($)	Apr. 28, 2026 USD ($)	Feb. 28, 2026 USD ($)
Debt Instrument [Line Items]
Borrowings from unsecured financings, net		$ 5,288,395		$ 5,139,411
Remaining borrowing capacity		$ 2,100,000
5.000% Senior Notes Due 2030 | Senior Notes | 5.000%
Debt Instrument [Line Items]
Interest rate		5.00%
Borrowings from unsecured financings, net		$ 650,000		650,000
5.000% Senior Notes Due 2031 | Senior Notes
Debt Instrument [Line Items]
Debt issue price percent			99.636%
5.000% Senior Notes Due 2031 | Senior Notes | 5.000%
Debt Instrument [Line Items]
Interest rate		5.00%	5.00%
Borrowings from unsecured financings, net		$ 650,000	$ 650,000	0
2026 Unsec. Term Loan | Unsecured Debt
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 375,000
Debt instrument, basis spread on variable rate	1.30%
Debt Instrument, Maximum Borrowing Capacity	$ 425,000
Debt instrument, covenant, net worth, minimum	$ 1,100,000
Debt instrument, covenant, interest coverage ratio, minimum	2.0
Debt instrument, covenant, unencumbered asset ratio, minimum	1.25
Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Interest rate		5.56%
Borrowings from unsecured financings, net		$ 20,000		$ 240,000