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	$ 243,258	$ 252,325	$ 178,980
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	374,283	359,688	334,201
Amortization of deferred loan costs and debt premiums	11,170	10,476	9,509
(Accretion) and amortization of above and below market lease intangibles, net	(43,867)	(33,330)	(23,144)
Stock-based compensation, net of capitalization	14,339	13,635	20,549
Equity in income of investments in real estate partnerships	(60,956)	(42,974)	(43,341)
Gain on sale of real estate, net of tax	(24,242)	(28,343)	(27,432)
Provision for impairment, net of tax	54,174	38,437	0
Early extinguishment of debt	11,982	11,172	12,449
Deferred income tax benefit of taxable REIT subsidiary	0	0	(9,737)
Distribution of earnings from investments in real estate partnerships	56,297	54,266	53,502
Settlement of derivative instrument	(6,870)	0	76
Deferred compensation expense	5,169	(1,085)	3,844
Realized and unrealized gain on investments	(5,433)	1,177	(3,837)
Deferred income tax benefit of taxable REIT subsidiary	(331)	(5,145)	(10,815)
Changes in assets and liabilities:
Tenant and other receivables	(4,690)	(26,374)	(26,081)
Deferred leasing costs	(6,777)	(8,366)	(14,448)
Other assets	(1,570)	(1,410)	9,536
Accounts payable and other liabilities	4,175	(760)	(2,114)
Tenants’ security, escrow deposits and prepaid rent	829	11,793	(2,728)
Net cash provided by operating activities	621,271	610,327	469,784
Cash flows from investing activities:
Acquisition of operating real estate	(222,444)	(85,289)	(124,727)
Advance deposits paid toward the acquisition of operating real estate	(125)	0	(4,917)
Acquisition of Equity One, net of cash and restricted cash acquired of $74,507	0	0	(646,790)
Real estate development and capital improvements	(200,012)	(226,191)	(346,857)
Proceeds from sale of real estate investments	137,572	250,445	110,015
Proceeds from property insurance casualty claims	9,350	0	0
(Issuance)/Collection of notes receivable	(547)	15,648	(5,236)
Investments in real estate partnerships	(66,921)	(74,238)	(23,529)
Return of capital from investments in real estate partnerships	63,693	14,647	36,603
Dividends on investment securities	660	531	365
Acquisition of investment securities	(23,458)	(23,164)	(23,535)
Proceeds from sale of investment securities	19,539	21,587	21,378
Net cash used in investing activities	(282,693)	(106,024)	(1,007,230)
Cash flows from financing activities:
Net proceeds from common stock issuance	0	0	88,458
Repurchase of common shares/units in conjunction with tax withholdings on equity award plans	(6,204)	(6,772)	(18,649)
Proceeds from sale of treasury stock	9	99	100
Common shares repurchased through share repurchase program	(32,778)	(213,851)	0
Redemption of preferred stock and partnership units	0	0	(325,000)
Distributions to limited partners in consolidated partnerships, net	(3,367)	(4,526)	(8,139)
Distributions to exchangeable operating partnership unit holders	(1,051)	(777)	(635)
Dividends paid to common stockholders/ Distributions to partners	(390,598)	(375,978)	(322,650)
Dividends paid to preferred stockholders/ Distributions to preferred unit holders	0	0	(5,029)
Repayment of fixed rate unsecured notes	(250,000)	(150,000)	0
Proceeds from issuance of fixed rate unsecured notes, net	723,571	299,511	953,115
Proceeds from unsecured credit facilities	560,000	575,000	1,100,000
Repayment of unsecured credit facilities	(785,000)	(490,000)	(755,000)
Proceeds from notes payable	0	1,740	131,069
Repayment of notes payable	(55,680)	(113,037)	(232,839)
Scheduled principal payments	(9,442)	(9,964)	(10,162)
Payment of loan costs	(7,019)	(9,448)	(13,271)
Early redemption costs	(10,647)	(10,491)	(12,420)
Net cash (used in) provided by financing activities	(268,206)	(508,494)	568,948
Net increase (decrease) in cash, cash equivalents, and restricted cash	70,372	(4,191)	31,502
Cash, cash equivalents, and restricted cash at beginning of the year	45,190	49,381	17,879
Cash, cash equivalents, and restricted cash at end of the year	115,562	45,190	49,381
Supplemental disclosure of cash flow information:
Cash paid for interest (net of capitalized interest of $4,192, $7,020, and $7,946 in 2019, 2018, and 2017, respectively)	136,139	136,645	109,956
Cash paid (received) for income taxes, net of refunds	1,225	5,455	(269)
Supplemental disclosure of non-cash transactions:
Exchangeable operating partnership units issued for acquisition of real estate	25,870		13,100
Mortgage loans for the acquisition of real estate	26,152	9,700	27,000
Change in fair value of securities	660	(206)	(8)
Change in accrued capital expenditures	10,704
Common stock issued under dividend reinvestment plan	1,429	1,333	1,210
Stock-based compensation capitalized	2,325	3,509	3,210
Contributions from limited partners in consolidated partnerships, net	66	13,000	186
Common stock issued for dividend reinvestment in trust	987	841	557
Contribution of stock awards into trust	2,582	1,314	1,372
Distribution of stock held in trust	197	524	677
Partnership Interest [Member]
Cash flows from operating activities:
Net income	243,258	252,325	178,980
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	374,283	359,688	334,201
Amortization of deferred loan costs and debt premiums	11,170	10,476	9,509
(Accretion) and amortization of above and below market lease intangibles, net	(43,867)	(33,330)	(23,144)
Stock-based compensation, net of capitalization	14,339	13,635	20,549
Equity in income of investments in real estate partnerships	(60,956)	(42,974)	(43,341)
Gain on sale of real estate, net of tax	(24,242)	(28,343)	(27,432)
Provision for impairment, net of tax	54,174	38,437	0
Early extinguishment of debt	11,982	11,172	12,449
Distribution of earnings from investments in real estate partnerships	56,297	54,266	53,502
Settlement of derivative instrument	(6,870)	0	76
Deferred compensation expense	5,169	(1,085)	3,844
Realized and unrealized gain on investments	(5,433)	1,177	(3,837)
Deferred income tax benefit of taxable REIT subsidiary	0	0	(9,737)
Changes in assets and liabilities:
Tenant and other receivables	(4,690)	(26,374)	(26,081)
Deferred leasing costs	(6,777)	(8,366)	(14,448)
Other assets	(1,570)	(1,410)	9,536
Accounts payable and other liabilities	4,175	(760)	(2,114)
Tenants’ security, escrow deposits and prepaid rent	829	11,793	(2,728)
Net cash provided by operating activities	621,271	610,327	469,784
Cash flows from investing activities:
Acquisition of operating real estate	(222,444)	(85,289)	(124,727)
Advance deposits paid toward the acquisition of operating real estate	(125)	0	(4,917)
Acquisition of Equity One, net of cash and restricted cash acquired of $74,507	0	0	(646,790)
Real estate development and capital improvements	(200,012)	(226,191)	(346,857)
Proceeds from sale of real estate investments	137,572	250,445	110,015
Proceeds from property insurance casualty claims	9,350	0	0
(Issuance)/Collection of notes receivable	(547)	15,648	(5,236)
Investments in real estate partnerships	(66,921)	(74,238)	(23,529)
Return of capital from investments in real estate partnerships	63,693	14,647	36,603
Dividends on investment securities	660	531	365
Acquisition of investment securities	(23,458)	(23,164)	(23,535)
Proceeds from sale of investment securities	19,539	21,587	21,378
Net cash used in investing activities	(282,693)	(106,024)	(1,007,230)
Cash flows from financing activities:
Net proceeds from common units issued as a result of common stock issued by Parent Company	0	0	88,458
Repurchase of common shares/units in conjunction with tax withholdings on equity award plans	(6,204)	(6,772)	(18,649)
Proceeds from sale of treasury stock	9	99	100
Common shares repurchased through share repurchase program	(32,778)	(213,851)	0
Redemption of preferred stock and partnership units	0	0	(325,000)
Distributions to limited partners in consolidated partnerships, net	(3,367)	(4,526)	(8,139)
Dividends paid to common stockholders/ Distributions to partners	(391,649)	(376,755)	(323,285)
Dividends paid to preferred stockholders/ Distributions to preferred unit holders	0	0	(5,029)
Repayment of fixed rate unsecured notes	(250,000)	(150,000)	0
Proceeds from issuance of fixed rate unsecured notes, net	723,571	299,511	953,115
Proceeds from unsecured credit facilities	560,000	575,000	1,100,000
Repayment of unsecured credit facilities	(785,000)	(490,000)	(755,000)
Proceeds from notes payable	0	1,740	131,069
Repayment of notes payable	(55,680)	(113,037)	(232,839)
Scheduled principal payments	(9,442)	(9,964)	(10,162)
Payment of loan costs	(7,019)	(9,448)	(13,271)
Early redemption costs	(10,647)	(10,491)	(12,420)
Net cash (used in) provided by financing activities	(268,206)	(508,494)	568,948
Net increase (decrease) in cash, cash equivalents, and restricted cash	70,372	(4,191)	31,502
Cash, cash equivalents, and restricted cash at beginning of the year	45,190	49,381	17,879
Cash, cash equivalents, and restricted cash at end of the year	115,562	45,190	49,381
Supplemental disclosure of cash flow information:
Cash paid for interest (net of capitalized interest of $4,192, $7,020, and $7,946 in 2019, 2018, and 2017, respectively)	136,139	136,645	109,956
Cash paid (received) for income taxes, net of refunds	1,225	5,455	(269)
Supplemental disclosure of non-cash transactions:
Exchangeable operating partnership units issued for acquisition of real estate	25,870		13,100
Mortgage loans for the acquisition of real estate	26,152	9,700	27,000
Change in accrued capital expenditures	10,704
Common stock issued under dividend reinvestment plan	1,429	1,333	1,210
Stock-based compensation capitalized	2,325	3,509	3,210
Contributions from limited partners in consolidated partnerships, net	66	13,000	186
Common stock issued for dividend reinvestment in trust	987	841	557
Contribution of stock awards into trust	2,582	1,314	1,372
Distribution of stock held in trust	197	524	677
Change in fair value of securities available-for-sale	660	(206)	(8)
Equity One Inc. [Member]
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation, net of capitalization	$ 0	$ 0	7,931
Equity One Inc. [Member] | Partnership Interest [Member]
Supplemental disclosure of non-cash transactions:
Mortgage loans for the acquisition of real estate			757,399
Common stock exchanged for Equity One shares			$ 4,471,808