Acquisitions and Dispositions - Additional Information (Details) $ in Thousands			3 Months Ended
	Jul. 25, 2023 USD ($)	Jul. 20, 2023 USD ($) joint_venture store shares	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)
Asset Acquisition [Line Items]
Total consideration paid for repurchase			$ 2,147,191	$ 1,879,049
Life Storage, Inc
Asset Acquisition [Line Items]
Total consideration paid for repurchase		$ 375,000
Unsecured senior notes
Asset Acquisition [Line Items]
Senior note balances			$ 7,325,001		$ 6,725,000
Unsecured senior notes | Senior Notes, Assumed From Life Storage
Asset Acquisition [Line Items]
Total consideration paid for repurchase	$ 2,351,100
Senior note balances	$ 48,900
Life Storage, Inc
Asset Acquisition [Line Items]
Wholly-owned stores acquired | store		757
Joint venture stores acquired | joint_venture		1
Equity interest issued conversion ratio | shares		0.895
Consideration transferred		$ 11,602,808
Real estate assets, estimated useful life		39 years
Tenant relationships, estimated useful life		18 months
Intangible assets, amortization period		36 months
Life Storage, Inc | Line of Credit
Asset Acquisition [Line Items]
Extinguishment of liability component		$ 1,160,000
Life Storage, Inc | Secured Debt
Asset Acquisition [Line Items]
Total consideration paid for repurchase		$ 32,000