Consolidated Statements Of Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Preferred Stock [Member]	Additional Paid-In Capital [Member]	Dividends In Excess Of Earnings [Member]	Treasury Stock, at cost [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interests [Member]	Noncontrolling interest - property partnerships [Member]
Equity, shares at Dec. 31, 2020		155,719,000
Equity, value at Dec. 31, 2020	$ 8,339,612	$ 1,557	$ 200,000	$ 6,356,791	$ (509,653)	$ (2,722)	$ (49,890)	$ 616,596	$ 1,726,933
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Redemption of operating partnership units to common stock, shares		524,000
Redemption of operating partnership units to common stock, value	0	$ 5		18,381				(18,386)
Allocated net income for the period	631,932				505,195			55,931	70,806
Dividends declared	(683,843)				(615,021)			(68,822)
Shares issued pursuant to stock purchase plan, shares		9,000
Shares issued pursuant to stock purchase plan, value	1,004			1,004
Net activity from stock option and incentive plan, shares		293,000
Net activity from stock option and incentive plan, value	71,383	$ 3		25,607				45,773
Issuance of operating partnership units for 360 Park Avenue South	99,689							99,689
Preferred Stock, Redeemed	(193,623)		(200,000)	6,377
Preferred Stock Redemption Charge	(6,412)				(6,412)
Proceeds from sale of interest in property partnerships and contributions from noncontrolling interests in property partnerships	18,002								18,002
Non-cash contributions from noncontrolling interest in property partnerhips	0
Distributions to noncontrolling interests in property partnerships	(259,764)								(259,764)
Effective portion of interest rate contracts	8,544						7,703	841
Amortization of interest rate contracts	6,704						5,525	603	576
Reallocation of noncontrolling interest	0			89,570				(89,570)
Equity, shares at Dec. 31, 2021		156,545,000
Equity, value at Dec. 31, 2021	8,033,228	$ 1,565	0	6,497,730	(625,891)	(2,722)	(36,662)	642,655	1,556,553
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Redemption of operating partnership units to common stock, shares		182,000
Redemption of operating partnership units to common stock, value	0	$ 3		6,536				(6,539)
Allocated net income for the period	1,020,584				848,947			96,780	74,857
Dividends declared	(686,126)				(614,412)			(71,714)
Shares issued pursuant to stock purchase plan, shares		10,000
Shares issued pursuant to stock purchase plan, value	1,036			1,036
Net activity from stock option and incentive plan, shares		21,000
Net activity from stock option and incentive plan, value	53,663			7,261				46,402
Issuance of operating partnership units for 360 Park Avenue South	0
Preferred Stock Redemption Charge	0
Proceeds from sale of interest in property partnerships and contributions from noncontrolling interests in property partnerships	849								849
Non-cash contributions from noncontrolling interest in property partnerhips	0
Distributions to noncontrolling interests in property partnerships	(85,518)								(85,518)
Effective portion of interest rate contracts	19,396						17,435	1,961
Amortization of interest rate contracts	6,707						5,509	622	576
Reallocation of noncontrolling interest	$ 0			26,584				(26,584)
Equity, shares at Dec. 31, 2022	156,757,867	156,758,000
Equity, value at Dec. 31, 2022	$ 8,363,819	$ 1,568	0	6,539,147	(391,356)	(2,722)	(13,718)	683,583	1,547,317
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Redemption of operating partnership units to common stock, shares		102,000
Redemption of operating partnership units to common stock, value	0	$ 1		3,793				(3,794)
Allocated net income for the period	291,424				190,215			22,548	78,661
Dividends declared	(688,342)				(615,011)			(73,331)
Shares issued pursuant to stock purchase plan, shares		19,000
Shares issued pursuant to stock purchase plan, value	1,156			1,156
Net activity from stock option and incentive plan, shares		62,000
Net activity from stock option and incentive plan, value	49,060			3,165				45,895
Issuance of operating partnership units for 360 Park Avenue South	0
Preferred Stock Redemption Charge	0
Proceeds from sale of interest in property partnerships and contributions from noncontrolling interests in property partnerships	244,541			160,416					84,125
Non-cash contributions from noncontrolling interest in property partnerhips	17,519
Distributions to noncontrolling interests in property partnerships	(69,975)								(69,975)
Effective portion of interest rate contracts	(14,405)						(12,927)	(1,478)
Amortization of interest rate contracts	6,703						5,498	629	576
Reallocation of noncontrolling interest	$ 0			7,472				(7,472)
Equity, shares at Dec. 31, 2023	156,940,866	156,941,000
Equity, value at Dec. 31, 2023	$ 8,183,981	$ 1,569	$ 0	$ 6,715,149	$ (816,152)	$ (2,722)	$ (21,147)	$ 666,580	$ 1,640,704