Acquisitions and Dispositions of Properties - Disposition of Properties to Digital Core REIT (Details)				1 Months Ended		3 Months Ended
	Dec. 13, 2022 USD ($)	Aug. 08, 2022	Dec. 06, 2021 USD ($) property	Jan. 31, 2020	Nov. 30, 2019	Sep. 30, 2021	Mar. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]		Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	Income (Loss) from Equity Method Investments	Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property
Ownership interest in DCRU operating properties
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage of retained investment in properties			10.00%
Ownership interest in operating properties			10.00%
Data center facility in Frankfurt, Germany
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on disposition of properties	$ 0
Ownership interest held in operating properties sold	25.00%
Consideration on sale of ownership	$ 146,000,000
Amount loaned to the consolidated subsidiary that owns the data center	$ 79,800,000
Digital Core REIT (DCRU)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash received			$ 919,100,000
Fair market value of retained investment in SREIT			521,400,000
Acquisition fees paid in Digital Core REIT units			13,000,000.0
Tax on acquisition fees			3,000,000.0
Net book value of assets contributed			439,300,000
Gain on disposition of properties			$ 1,011,200,000
Digital Core REIT (DCRU) | Ownership interest in DCRU operating properties
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties, classified as held for sale | property			10
Cash received			$ 919,000,000
Fair market value of retained investment in SREIT			1,400,000,000
Acquisition fees paid in Digital Core REIT units			$ 13,000,000
Percentage of retained investment in properties			10.00%
Ownership interest in operating properties			39.40%