Real Estate Transactions - Development Activities (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Real Estate [Line Items]
Depreciation and amortization of real estate, in-place lease, and other intangibles									$ 684,286	$ 553,949	$ 435,191
Decrease to income (loss) from continuing operations	$ (28,943)	$ (61,305)	$ (168,065)	$ 120,585	$ 19,204	$ 27,762	$ (60,341)	$ (147,132)	$ (137,728)	$ (160,507)	$ (175,469)
Continuing operations basic earnings per share (in dollars per share)	$ (0.05)	$ (0.10)	$ (0.30)	$ 0.23	$ 0.04	$ 0.06	$ (0.10)	$ (0.28)	$ (0.22)	$ (0.27)	$ (0.33)
Continuing operations diluted earnings per share (in dollars per share)	$ (0.05)	$ (0.10)	$ (0.30)	$ 0.23	$ 0.04	$ 0.06	$ (0.10)	$ (0.28)	$ (0.22)	$ (0.27)	$ (0.33)
Life science
Real Estate [Line Items]
Weighted average remaining useful life									11 years	15 years
Depreciation and amortization of real estate, in-place lease, and other intangibles									$ 30,000
Decrease to income (loss) from continuing operations									$ 30,000
Continuing operations basic earnings per share (in dollars per share)									$ 0.06
Continuing operations diluted earnings per share (in dollars per share)									$ 0.06