Supplemental Cash Flow Information - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Supplemental cash flow information:
Interest paid, net of capitalized interest	$ 90,032	$ 71,621
Income taxes paid (refunded)	2,521	(1,673)
Capitalized interest	5,453	6,970
Supplemental schedule of non-cash investing and financing activities:
Accrued construction costs	107,798	126,185
Vesting of restricted stock units and conversion of non-managing member units into common stock	838	1,077
Net noncash impact from the consolidation of previously unconsolidated joint ventures	0	323,138
Mortgages assumed with real estate acquisitions	0	215,335
Refundable entrance fees assumed with real estate acquisitions	0	307,954
Seller financing provided on disposition of real estate asset	$ 559,745	$ 0

The value of stock issued upon which restrictions have lapsed.

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

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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The net book value of a nonmonetary asset transferred or exchanged in connection with the acquisition of a business or asset in a noncash transaction. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Nonmonetary assets and liabilities are assets and liabilities that will not result in cash receipts or cash payments in the future.

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Amount of liabilities, classified as other, assumed in acquiring a business or in consideration for an asset received in a noncash or part noncash acquisition.

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