Real Estate - Acquisitions (Details) $ in Millions	Jul. 28, 2021 USD ($) ft²	Mar. 12, 2021 USD ($) a
Subsequent Event \| 725 Ponce
Business Acquisition [Line Items]
Square Feet \| ft²	372,000
Payments to acquire businesses, gross	$ 300.2
Atlanta \| Midtown Atlanta Land Purchase
Business Acquisition [Line Items]
Square Feet \| a		0.24
Payments to acquire businesses, gross		$ 8.0
Ownership percentage of partner in joint venture		95.00%

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

Name:	us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration