Acquisitions and Dispositions - Dispositions Narrative (Details) $ in Millions	1 Months Ended
	Dec. 31, 2023 USD ($) storageUnit	Jul. 31, 2023 USD ($) storageFacility storageUnit	Mar. 31, 2023 USD ($) a landParcel	Dec. 31, 2022 USD ($) a	Jun. 30, 2022 USD ($) a	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($) a building	Sep. 30, 2021 USD ($)	May 31, 2021 USD ($) a	Feb. 27, 2024 USD ($) storageUnit
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 Extensible List Not Disclosed Flag								gain on sale
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Hotel
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration received								$ 252.0
Gain (loss) on disposal								39.1
Transaction costs								2.9
Repayments of debt								$ 132.3
Disposal Group, Disposed of by Sale, Not Discontinued Operations | 110 North Wacker Building
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration received						$ 208.6
Gain (loss) on disposal						$ 5.0
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Monarch City Collection, Texas
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration received									$ 51.4
Gain (loss) on disposal									21.3
Transaction costs on sales of investments real estate									$ 1.5
Area of land sold | a									229
Creekside Park Medical Plaza | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Subsequent Event
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of units in real estate property | storageUnit										32,689
Consideration received										$ 14.0
Memorial Hermann Medical Office | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of units in real estate property | storageUnit	20,000
Consideration received	$ 9.6
Gain (loss) on disposal	$ 3.2
The Woodlands, Texas | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of units in real estate property | storageUnit		1,370
Consideration received		$ 30.5
Gain (loss) on disposal		$ 16.1
Number of operating self storage facilities | storageFacility		2
Honolulu, Hawai'i | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration received			$ 6.3
Gain (loss) on disposal			$ 4.7
Number of land parcels sold | landParcel			2
Area of real estate property (in sqft) | a			11,929
Creekside Village Green | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration received				$ 28.4
Gain (loss) on disposal				$ 13.4
Area of real estate property (in sqft) | a				74,670
Lake Woodlands Crossing | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration received				$ 22.5
Gain (loss) on disposal				$ 12.2
Area of real estate property (in sqft) | a				60,261
Ground lease term				99 years
Outlet Collection at Riverwalk | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration received					$ 34.0
Gain (loss) on disposal					$ 4.0
Area of real estate property (in sqft) | a					264,080
Transaction costs on sales of investments real estate					$ 0.5
Century Park | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration received							$ 25.0
Gain (loss) on disposal							7.4
Transaction costs on sales of investments real estate							$ 0.4
Area of land sold | a							63
Area of real estate property sold | a							1,302,597
Number of buildings | building							17