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Other Investments (Net Lease Venture II) (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Nov. 30, 2021	Mar. 31, 2022
Schedule of Equity Method Investments [Line Items]
Payments to acquire property	$ 33.3
Net Lease Venture II | Office laboratory property
Schedule of Equity Method Investments [Line Items]
Payments to acquire property	0.6
Net Lease Venture II | Office laboratory property | Liabilities associated with real estate held for sale and classified as discontinued operations
Schedule of Equity Method Investments [Line Items]
Mortgage liability assumed	$ 44.4
Safehold Inc. | Net Lease Venture II | Office laboratory property
Schedule of Equity Method Investments [Line Items]
Payment to terminate a real estate purchase option		$ 0.3

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- Definition

The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 50
-Section 30
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=126928898&loc=d3e9212-128498

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 50
-Section 30
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=126928898&loc=d3e9215-128498

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 50
-Section 25
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=127000608&loc=d3e9135-128495

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