Supplemental Cash Flow Information - Summary of Supplemental (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Supplemental cash flow information:
Interest paid, net of capitalized interest	$ 201,784	$ 275,690	$ 309,111
Income taxes paid (refunded)	1,426	4,480	10,045
Capitalized interest	30,459	21,056	16,937
Accrued construction costs	126,006	88,826	67,425
Retained equity method investment from U.K. JV transaction	0	104,922	0
Derecognition of U.K. Bridge Loan receivable	0	147,474	0
Consolidation of net assets related to U.K. Bridge Loan	0	106,457	0
Vesting of restricted stock units and conversion of non-managing member units into common stock	5,614	537	2,908
Net noncash impact from the consolidation of previously unconsolidated joint ventures	17,850	68,293	0
Deconsolidation of noncontrolling interest in connection with RIDEA II transaction	0	0	58,061
Liabilities assumed with real estate acquisitions	172,565	8,457	5,425
Conversion of DFLs to real estate	350,540	0	0
Seller financing provided on disposition of real estate asset	427,328	0	0
Seller financing provided on disposition of real estate asset	$ 44,812	$ 0	$ 0