CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income	$ 1,959,639	$ 1,361,227	$ 1,525,651
Adjustments to reconcile net income to net cash flows from operating activities:
Gain on sale of real estate	(13,683)	(1,493)	(341)
Depreciation and amortization	713,428	553,257	512,918
Equity in earnings of unconsolidated real estate entities	(232,093)	(80,497)	(69,547)
Distributions from cumulative equity in earnings of unconsolidated real estate entities	150,488	72,098	73,259
Foreign currency exchange (gain) loss	(111,787)	97,953	(7,829)
Share-based compensation expense	59,815	33,363	25,833
Other	17,748	6,994	7,690
Total adjustments	583,916	681,675	541,983
Net cash flows from operating activities	2,543,555	2,042,902	2,067,634
Cash flows from investing activities:
Capital expenditures to maintain real estate facilities	(270,238)	(169,998)	(187,303)
Development and expansion of real estate facilities	(281,981)	(189,413)	(284,682)
Acquisition of real estate facilities and intangible assets	(5,047,106)	(792,266)	(437,758)
Distributions in excess of cumulative equity in earnings from unconsolidated real estate entities	19,518	24,658	11,630
Repayment of note receivable	0	7,509	0
Proceeds from sale of real estate investments	16,296	1,796	762
Net cash flows used in investing activities	(5,563,511)	(1,117,714)	(897,351)
Cash flows from financing activities:
Repayments on notes payable	(2,218)	(2,020)	(1,920)
Issuance of notes payable, net of issuance costs	5,038,904	545,151	496,900
Issuance of preferred shares	1,147,455	1,208,206	1,059,156
Issuance of common shares in connection with share-based compensation	95,860	12,664	33,564
Redemption of preferred shares	(1,175,000)	(1,220,000)	(1,050,000)
Cash paid upon vesting of restricted share units	(13,069)	(10,518)	(12,162)
Acquisition of noncontrolling interests	(692)	(33)	(35,000)
Contributions by noncontrolling interests	2,451	2,629	4,148
Distributions paid to preferred shareholders, common shareholders and restricted share unitholders	(1,588,888)	(1,606,429)	(1,608,749)
Distributions paid to noncontrolling interests	(6,662)	(5,366)	(6,672)
Net cash flows provided by (used in) financing activities	3,498,141	(1,075,716)	(1,120,735)
Net cash flows from (used in) operating, investing, and financing activities	478,185	(150,528)	49,548
Net effect of foreign exchange impact on cash and equivalents, including restricted cash	505	(426)	(13)
Increase (decrease) in cash and equivalents, including restricted cash	478,690	(150,954)	49,535
Cash and equivalents, including restricted cash at beginning of the period:
Cash and equivalents	257,560	409,743	361,218
Restricted cash included in other assets	25,040	23,811	22,801
Cash, equivalents, and restricted cash	282,600	433,554	384,019
Cash and equivalents, including restricted cash at end of the period:
Cash and equivalents	734,599	257,560	409,743
Restricted cash included in other assets	26,691	25,040	23,811
Cash, equivalents, and restricted cash	761,290	282,600	433,554
Costs incurred during the period remaining unpaid at period end for:
Capital expenditures to maintain real estate facilities	(23,398)	(10,359)	(16,558)
Construction or expansion of real estate facilities	(50,051)	(32,349)	(32,356)
Real estate acquired in exchange for noncontrolling interests	(68,170)	0	0
Real estate acquired in exchange for consideration payable	0	(3,799)	(1,817)
Preferred shares called for redemption and reclassified to liabilities	$ 0	$ 300,000	$ 0