Consolidated Statements Of Cash Flows - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019		Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities
Net income		$ 224,270		$ 160,694	$ 200,860
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization		336,274		300,946	263,974
Loss on early retirement of debt		11,995		0	323
Gain on sale of operating properties		(49,901)		0	(43,231)
Distributions of income from joint ventures		14,843		7,736	6,851
Equity in income of joint ventures	[1]	(14,783)	[2]	(7,836)	(6,822)	[2]
Share-based compensation		15,235		16,749	17,547
Net change in operating accounts and other		38,094		9,553	(4,846)
Receipts for settlement of forward interest rate swaps		(20,430)		15,905
Net cash from operating activities		555,597		503,747	434,656
Cash flows from investing activities
Development and capital improvements, including land		(407,558)		(359,230)	(299,086)
Acquisition of operating property		(436,305)		(290,005)	(58,267)
Proceeds from sales of operating properties, including land		67,572		11,296	76,902
Increase in non-real estate assets		(17,197)		(14,503)	(5,128)
Decrease (increase) in notes receivable		1,394		9,475	(1,988)
Maturity of short-term investments		0		0	100,000
Other		(351)		2,046	(2,187)
Net cash from investing activities		(792,445)		(640,921)	(189,754)
Cash flows from financing activities
Borrowings on unsecured credit facility and other short-term borrowings		1,217,000		342,000	465,000
Repayments on unsecured credit facility and other short-term borrowings		(1,173,000)		(342,000)	(465,000)
Repayment of notes payable		(746,730)		(381,438)	(278,999)
Proceeds from notes payable		889,979		495,545	0
Distributions to common shareholders and non-controlling interests		(317,253)		(298,005)	(280,761)
Payment of deferred financing costs		(5,965)		(914)	(978)
Proceeds from issuance of common shares		353,213		0	445,038
Repurchase of common shares and redemption of units		0		(14,668)	0
Other		3,500		2,452	2,777
Net cash from financing activities		220,744		(197,028)	(112,923)
Net increase (decrease) in cash, cash equivalents, and restricted cash		(16,104)		(334,202)	131,979
Cash, cash equivalents, and restricted cash, beginning of year		43,603		377,805	245,826
Cash, cash equivalents, and restricted cash, end of year		27,499		43,603	377,805
Reconciliation of cash, cash equivalents, and restricted cash to the Consolidated Balance Sheets [Abstract]
Total cash, cash equivalents, and restricted cash		27,499		377,805	377,805
Supplemental information
Cash paid for interest, net of interest capitalized		71,248		81,299	88,654
Cash paid for income taxes		1,291		1,951	1,705
Supplemental schedule of noncash investing and financing activities
Distributions declared but not paid		80,973		74,982	72,943
Value of shares issued under benefit plans, net of cancellations		18,249		17,253	18,061
Accrual associated with construction and capital expenditures		27,162		35,588	19,016
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability		$ 15,017		$ 0	$ 0

[1] Equity in income excludes our ownership interest of fee income from various services provided by us to the Funds.

[2] Equity in income for the year ended December 31, 2019 includes our ownership interest of the gain on sale of the operating property of approximately $6.2 million. Equity in income for the year ended December 31, 2017 includes our ownership interest of the hurricane related insurance recoveries and expenses of approximately $0.4 million.