Supplemental Cash Flow Information - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020
Supplemental cash flow information:
Interest paid, net of capitalized interest	$ 109,277	$ 104,370
Income taxes paid (refunded)	4,026	164
Capitalized interest	10,867	13,680
Supplemental schedule of non-cash investing and financing activities:
Accrued construction costs	113,221	117,895
Vesting of restricted stock units and conversion of non-managing member units into common stock	900	4,703
Net noncash impact from the consolidation of previously unconsolidated joint ventures	0	323,138
Mortgages assumed with real estate acquisitions	0	215,335
Carrying value of mortgages assumed by buyer in real estate dispositions	106,632	0
Refundable entrance fees assumed with real estate acquisitions	0	307,954
Seller financing provided on disposition of real estate asset	559,745	12,480
ROU asset obtained in exchange for new lease liability related to operating leases	$ 13,157	$ 23,962

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Future cash outflow to pay for construction in progress expenditures that have occurred.

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Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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