Condensed Consolidated Statements of Noncontrolling Interests and Equity - USD ($) $ in Thousands	Total	Redemption of units for stock	Series A Units Redemption of units for stock	Series D Units Redemption of units for stock	Preferred Operating Partnership	Preferred Operating Partnership Redemption of units for stock	Preferred Operating Partnership Series A Units Redemption of units for stock	Preferred Operating Partnership Series D Units Redemption of units for stock	Operating Partnership	Operating Partnership Redemption of units for stock	Other	Common stock	Common stock Redemption of units for stock	Common stock Series A Units Redemption of units for stock	Common stock Series D Units Redemption of units for stock	Additional Paid-in Capital	Additional Paid-in Capital Redemption of units for stock	Additional Paid-in Capital Series A Units Redemption of units for stock	Additional Paid-in Capital Series D Units Redemption of units for stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning balance at Dec. 31, 2022	$ 4,078,274				$ 261,502				$ 556,095		$ 1,080	$ 1,339				$ 3,345,332				$ 48,798	$ (135,872)
Beginning balance (in shares) at Dec. 31, 2022												133,921,020
Increase (Decrease) in Stockholders' Equity
Redemption of noncontrolling interests		$ 0	$ (5,316)	$ 0			$ (16,339)	$ (22,064)		$ (163)				$ 8	$ 2		$ 163	$ 11,015	$ 22,062
Redemption of noncontrolling interests (in shares)													2,119	851,698	154,307
Life Storage Merger issuance of common stock and Operating Partnership units (in shares)												76,217,359
Life Storage Merger issuance of common stock and Operating Partnership units	11,602,808								249,470			$ 762				11,352,576
Noncontrolling interest in consolidated joint ventures	7,309										7,309
Net income (loss)	623,046				6,761				29,353		(132)										587,064
Other comprehensive loss	(4,175)								(289)											(3,886)
Distributions to Operating Partnership units held by noncontrolling interests	(43,003)				(6,921)				(36,082)
Dividends paid on common stock	(704,069)																				(704,069)
Issuance of common stock in connection with share based compensation (in shares)												144,640
Issuance of common stock in connection with share based compensation	19,433											$ 2				19,431
Taxes paid upon net settlement of share based compensation (in shares)												(8,074)
Taxes paid upon net settlement of share based compensation	(7,606)															(7,606)
Restricted stock grants cancelled (in shares)												(6,983)
Ending balance at Sep. 30, 2023	15,566,701				222,939				798,384		8,257	$ 2,113				14,742,973				44,912	(252,877)
Ending balance (in shares) at Sep. 30, 2023												211,276,086
Beginning balance at Jun. 30, 2023	4,035,407				222,940				553,610		3,079	$ 1,351				3,383,303				47,065	(175,941)
Beginning balance (in shares) at Jun. 30, 2023												135,058,897
Increase (Decrease) in Stockholders' Equity
Redemption of noncontrolling interests		0								(163)							163
Redemption of noncontrolling interests (in shares)													2,119
Life Storage Merger issuance of common stock and Operating Partnership units (in shares)												76,217,359
Life Storage Merger issuance of common stock and Operating Partnership units	11,602,808								249,470			$ 762				11,352,576
Noncontrolling interest in consolidated joint ventures	5,209										5,209
Net income (loss)	198,856				2,253				8,284		(31)										188,350
Other comprehensive loss	(2,264)								(111)											(2,153)
Distributions to Operating Partnership units held by noncontrolling interests	(14,960)				(2,254)				(12,706)
Dividends paid on common stock	(265,286)																				(265,286)
Issuance of common stock in connection with share based compensation (in shares)												1,253
Issuance of common stock in connection with share based compensation	6,994											$ 0				6,994
Taxes paid upon net settlement of share based compensation (in shares)												(414)
Taxes paid upon net settlement of share based compensation	(63)															(63)
Restricted stock grants cancelled (in shares)												(3,128)
Ending balance at Sep. 30, 2023	15,566,701				222,939				798,384		8,257	$ 2,113				14,742,973				44,912	(252,877)
Ending balance (in shares) at Sep. 30, 2023												211,276,086
Beginning balance at Dec. 31, 2023	$ 15,413,949				222,360				791,754		8,914	$ 2,113				14,750,388				17,435	(379,015)
Beginning balance (in shares) at Dec. 31, 2023	211,278,803											211,278,803
Increase (Decrease) in Stockholders' Equity
Issuance of common stock for share based compensation, exercise of options and taxes paid upon net settlement, net (in shares)												178,944
Issuance of common stock for share based compensation, exercise of options and taxes paid upon net settlement	$ 14,419											$ 2				14,417
Issuance of common stock, net of offering costs (in shares)												2,310
Issuance of common stock, net of offering costs	365															365
Offering costs associated with shelf registration	(522)															(522)
Redemption of noncontrolling interests		0				$ (31,054)				(27,321)			$ 5				58,370
Redemption of noncontrolling interests (in shares)													521,685
Noncontrolling interest in consolidated joint ventures	1,687										1,687
Net income (loss)	622,431				6,073				24,137		27										592,194
Other comprehensive loss	(14,691)								(596)											(14,095)
Distributions to Operating Partnership units held by noncontrolling interests	(47,911)				(6,073)				(41,838)
Dividends paid on common stock	(1,031,044)																				(1,031,044)
Ending balance at Sep. 30, 2024	$ 14,958,683				191,306				746,136		10,628	$ 2,120				14,823,018				3,340	(817,865)
Ending balance (in shares) at Sep. 30, 2024	211,981,742											211,981,742
Beginning balance at Jun. 30, 2024	$ 15,130,840				191,306				757,102		9,800	$ 2,120				14,810,938				27,241	(667,667)
Beginning balance (in shares) at Jun. 30, 2024												211,927,348
Increase (Decrease) in Stockholders' Equity
Issuance of common stock for share based compensation, exercise of options and taxes paid upon net settlement, net (in shares)												10,515
Issuance of common stock for share based compensation, exercise of options and taxes paid upon net settlement	8,224											$ 0				8,224
Offering costs associated with shelf registration	(28)															(28)
Redemption of noncontrolling interests		$ 0								$ (3,884)			$ 0				$ 3,884
Redemption of noncontrolling interests (in shares)													43,879
Noncontrolling interest in consolidated joint ventures	825										825
Net income (loss)	202,945				1,932				7,800		3										193,210
Other comprehensive loss	(24,887)								(986)											(23,901)
Distributions to Operating Partnership units held by noncontrolling interests	(15,828)				(1,932)				(13,896)
Dividends paid on common stock	(343,408)																				(343,408)
Ending balance at Sep. 30, 2024	$ 14,958,683				$ 191,306				$ 746,136		$ 10,628	$ 2,120				$ 14,823,018				$ 3,340	$ (817,865)
Ending balance (in shares) at Sep. 30, 2024	211,981,742											211,981,742