CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net income (loss)	$ 334,757	$ 516,424	$ 525,930
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization of real estate, in-place lease, and other intangibles	749,901	710,569	684,286
Stock-based compensation amortization expense	14,480	26,456	18,202
Amortization of deferred financing costs	11,916	10,881	9,216
Straight-line rents	(14,387)	(49,183)	(31,188)
Amortization of nonrefundable entrance fees and above (below) market lease intangibles	(108,988)	(102,747)	(94,362)
Equity loss (income) from unconsolidated joint ventures	(10,204)	(2,049)	(11,235)
Distributions of earnings from unconsolidated joint ventures	910	943	4,976
Loss (gain) on sale of real estate under direct financing leases	0	(22,693)	0
Deferred income tax expense (benefit)	(14,605)	(6,001)	(5,792)
Impairments and loan loss reserves (recoveries), net	(5,601)	7,004	55,896
Loss (gain) on debt extinguishments	0	0	225,824
Loss (gain) on sales of real estate, net	(86,463)	(10,422)	(605,311)
Loss (gain) upon change of control, net	(234)	(311,438)	(1,042)
Casualty-related loss (recoveries), net	(3,085)	7,168	1,632
Other non-cash items	4,900	6,489	(8,178)
Changes in:
Decrease (increase) in accounts receivable and other assets, net	(21,566)	(17,433)	18,626
Increase (decrease) in accounts payable, accrued liabilities, and deferred revenue	104,511	136,293	7,768
Net cash provided by (used in) operating activities	956,242	900,261	795,248
Cash flows from investing activities:
Acquisitions of real estate	(15,847)	(178,133)	(1,483,026)
Development, redevelopment, and other major improvements of real estate	(731,206)	(861,636)	(610,555)
Leasing costs, tenant improvements, and recurring capital expenditures	(113,596)	(108,510)	(111,480)
Proceeds from sales of real estate, net	141,651	47,885	2,399,120
Proceeds from the South San Francisco JVs transaction, net	0	125,985	0
Investments in unconsolidated joint ventures	(88,391)	(21,143)	(25,260)
Distributions in excess of earnings from unconsolidated joint ventures	20,640	12,518	37,640
Proceeds from insurance recovery	24,980	1,450	0
Proceeds from sales/principal repayments on loans receivable, direct financing leases, and marketable debt securities	204,865	115,988	342,420
Investments in loans receivable and other	(19,850)	(10,747)	(17,827)
Net cash provided by (used in) investing activities	(576,754)	(876,343)	531,032
Cash flows from financing activities:
Borrowings under bank line of credit and commercial paper	10,344,705	15,882,153	16,821,450
Repayments under bank line of credit and commercial paper	(10,620,311)	(16,052,522)	(15,785,065)
Issuances and borrowings of term loans, senior unsecured notes, and mortgage debt	743,778	500,000	1,088,537
Repayments and repurchases of term loans, senior unsecured notes, and mortgage debt	(90,089)	(5,048)	(2,425,936)
Payments for debt extinguishment and deferred financing costs	(7,322)	(4,171)	(236,942)
Issuance of common stock and exercise of options, net of offering costs	278	308,100	5,036
Repurchase of common stock	(6,524)	(67,838)	(12,841)
Dividends paid on common stock	(657,021)	(648,047)	(650,082)
Distributions to and purchase of noncontrolling interests	(45,282)	(30,549)	(93,314)
Contributions from and issuance of noncontrolling interests	489	1,390	640
Net cash provided by (used in) financing activities	(337,299)	(116,532)	(1,288,517)
Net increase (decrease) in cash, cash equivalents, and restricted cash	42,189	(92,614)	37,763
Cash, cash equivalents, and restricted cash, beginning of year	126,834	219,448	181,685
Cash, cash equivalents, and restricted cash, end of year	$ 169,023	$ 126,834	$ 219,448