Segments - Schedule of Reconciliation of Our Reported Income Before Income Taxes To Our Net Operating Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Income before income taxes	$ 119,376	$ 187,037	$ 238,578
General and administrative expenses	51,130	57,606	59,281
Depreciation and amortization	189,320	189,855	221,993
Other	16,291	13,866	11,108
Loss on early extinguishment of debt	0	323	758
Equity in losses (earnings) of unconsolidated real estate ventures	7,327	16,075	(7,553)
Non-operating income (expense)	(934)	(314)	1,016
Gain on sale of self storage properties	(16,293)	(63,841)	(63,910)
Management fees and other revenue
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Management fees and other revenue	(48,529)	(42,726)
Reportable Segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
General and administrative expenses	51,130	57,606	59,281
Depreciation and amortization	189,320	189,855	221,993
Other	16,291	13,866	11,108
Interest expense	162,445	154,260	166,147
Loss on early extinguishment of debt	0	323	758
Equity in losses (earnings) of unconsolidated real estate ventures	7,327	16,075	(7,553)
Acquisition and integration costs	6,721	3,616	1,659
Non-operating income (expense)	(934)	(314)	1,016
Gain on sale of self storage properties	(16,293)	(63,841)	(63,910)
Net operating income	486,854	515,757	594,666
Reportable Segment | Management fees and other revenue
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Management fees and other revenue	$ (48,529)	$ (42,726)	$ (34,411)