Acquisitions and Dispositions - Asset Acquisition - Life Storage (Details) - USD ($) $ in Thousands		3 Months Ended						9 Months Ended
	Jul. 20, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Asset Acquisition [Line Items]
Total consideration		$ 18,664	$ 32,914	$ 13,117	$ 762,153	$ 228,567	$ 227,896	$ 64,695	$ 1,218,616
Equity investment in joint venture partnerships								325,250	0
Accounts payable, accrued expenses and other liabilities								(191,077)	0
Life Storage, Inc
Asset Acquisition [Line Items]
Equity	$ 11,602,808
Cash for payoff of Life Storage credit facility and debt	1,192,000
Transaction Costs	55,318
Total consideration	12,850,127
Real estate assets	14,587,735
Equity investment in joint venture partnerships	325,250
Cash and other assets	107,423
Intangible assets - other	82,000
Trade name	50,000
Unsecured senior notes	(2,106,866)							$ (2,106,866)
Accounts payable, accrued expenses and other liabilities	(191,077)
Noncontrolling interests	(4,338)
Fair value of net assets acquired	12,850,127
Life Storage, Inc | Common stock
Asset Acquisition [Line Items]
Equity	11,353,338
Life Storage, Inc | OP units
Asset Acquisition [Line Items]
Equity	$ 249,470