Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net income	$ 455,840	$ 359,786
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	405,412	398,678
Gain on sale of depreciable real estate assets	(131,963)	(134,515)
Gain on sale of non-depreciable real estate assets	(809)	(202)
Loss (gain) on embedded derivative in preferred shares	10,364	(11,492)
Stock compensation expense	14,615	12,804
Amortization of debt issuance costs, discounts and premiums	4,547	4,142
Loss (gain) on investments	39,290	(18,001)
Net change in operating accounts and other operating activities	10,019	67,050
Net cash provided by operating activities	807,315	678,250
Cash flows from investing activities:
Purchases of real estate and other assets	(252,628)	(46,028)
Capital improvements and other	(219,221)	(208,563)
Development costs	(124,262)	(179,810)
Distributions from real estate joint venture	386	483
Contributions to affiliates	(11,100)	(1,971)
Proceeds from real estate asset dispositions	165,827	158,812
Proceeds from insurance recoveries	26,385	7,422
Net cash used in investing activities	(414,613)	(269,655)
Cash flows from financing activities:
Net proceeds from (payments of) commercial paper	125,000	(147,000)
Proceeds from notes payable	0	594,423
Principal payments on notes payable	(126,043)	(466,817)
Payment of deferred financing costs	(5,473)	(5,922)
Distributions to noncontrolling interests	(10,968)	(12,009)
Dividends paid on common shares	(395,258)	(352,384)
Dividends paid on preferred shares	(2,766)	(2,766)
Acquisition of noncontrolling interests	(43,070)	0
Net change in other financing activities	(11,168)	(10,214)
Net cash used in financing activities	(469,746)	(402,689)
Net (decrease) increase in cash, cash equivalents and restricted cash	(77,044)	5,906
Cash, cash equivalents and restricted cash, beginning of period	130,598	35,615
Cash, cash equivalents and restricted cash, end of period	53,554	41,521
Reconciliation of cash, cash equivalents and restricted cash at period end:
Cash and cash equivalents	38,996	29,811
Restricted cash	14,558	11,710
Total cash, cash equivalents and restricted cash	53,554	41,521
Supplemental disclosure of cash flow information:
Interest paid	109,936	109,471
Income taxes paid	3,463	2,518
Supplemental disclosure of noncash investing and financing activities:
Conversion of OP Units to shares of common stock	500	33,272
Accrued construction in progress	30,175	18,484
Interest capitalized	6,146	7,781
Limited Partnership [Member]
Cash flows from operating activities:
Net income	455,840	359,786
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	405,412	398,678
Gain on sale of depreciable real estate assets	(131,963)	(134,515)
Gain on sale of non-depreciable real estate assets	(809)	(202)
Loss (gain) on embedded derivative in preferred shares	10,364	(11,492)
Stock compensation expense	14,615	12,804
Amortization of debt issuance costs, discounts and premiums	4,547	4,142
Loss (gain) on investments	39,290	(18,001)
Net change in operating accounts and other operating activities	10,019	67,050
Net cash provided by operating activities	807,315	678,250
Cash flows from investing activities:
Purchases of real estate and other assets	(252,628)	(46,028)
Capital improvements and other	(219,221)	(208,563)
Development costs	(124,262)	(179,810)
Distributions from real estate joint venture	386	483
Contributions to affiliates	(11,100)	(1,971)
Proceeds from real estate asset dispositions	165,827	158,812
Proceeds from insurance recoveries	26,385	7,422
Net cash used in investing activities	(414,613)	(269,655)
Cash flows from financing activities:
Net proceeds from (payments of) commercial paper	125,000	(147,000)
Proceeds from notes payable	0	594,423
Principal payments on notes payable	(126,043)	(466,817)
Payment of deferred financing costs	(5,473)	(5,922)
Dividends paid on common shares	(406,226)	(364,393)
Dividends paid on preferred shares	(2,766)	(2,766)
Acquisition of noncontrolling interests	(43,070)	0
Net change in other financing activities	(11,168)	(10,214)
Net cash used in financing activities	(469,746)	(402,689)
Net (decrease) increase in cash, cash equivalents and restricted cash	(77,044)	5,906
Cash, cash equivalents and restricted cash, beginning of period	130,598	35,615
Cash, cash equivalents and restricted cash, end of period	53,554	41,521
Reconciliation of cash, cash equivalents and restricted cash at period end:
Cash and cash equivalents	38,996	29,811
Restricted cash	14,558	11,710
Total cash, cash equivalents and restricted cash	53,554	41,521
Supplemental disclosure of cash flow information:
Interest paid	109,936	109,471
Income taxes paid	3,463	2,518
Supplemental disclosure of noncash investing and financing activities:
Accrued construction in progress	30,175	18,484
Interest capitalized	$ 6,146	$ 7,781