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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2021
Accounting Policies [Abstract]  
Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis
The table below presents the Company’s assets and liabilities measured at fair value on a recurring basis as of December 31, 2021, aggregated by the level in the fair value hierarchy within which those measurements fall.
  Fair Value Measurements at Reporting Date Using
DescriptionDecember 31, 2021Quoted Prices in Active Markets for Identical Assets (Level 1)Significant Other Observable Inputs (Level 2)Significant Unobservable Inputs (Level 3)
Other assets - Cash flow hedge swap agreements$271 $— $271 $— 
Other liabilities - Cash flow hedge swap agreements$39,569 $— $39,569 $— 
Schedule of Fair Value of Financial Instruments The fair values of the Company’s fixed-rate assets and liabilities were as follows for the periods indicated:
 December 31, 2021December 31, 2020
Fair
Value		Carrying
Value		Fair
Value		Carrying
Value
Notes receivable from Preferred and Common Operating Partnership unit holders$101,824 $101,900 $102,333 $102,311 
Fixed rate notes receivable$105,954 $104,251 $114,145 $104,000 
Fixed rate debt$4,643,072 $4,506,435 $3,816,530 $3,637,220 
Schedule of Unpaid Claims Liability The following table presents information on the portion of the Company’s unpaid claims liability, which is included in other liabilities on the Company's consolidated balance sheets, that relates to tenant insurance for the periods indicated:
 For the Year Ended December 31,
Tenant Reinsurance Claims:202120202019
Unpaid claims liability at beginning of year$8,294 $8,109 $7,326 
Claims and claim adjustment expense for claims incurred in the current year16,901 14,534 16,280 
Claims and claim adjustment expense (benefit) for claims incurred in the prior years122 (1,351)98 
Payments for current year claims(11,913)(9,697)(11,352)
Payments for prior year claims(4,292)(3,301)(4,243)
Unpaid claims liability at the end of the year$9,112 $8,294 $8,109 
Schedule of Antidilutive Shares Excluded from Computation of Earnings Per Share The following table presents the number of weighted OP Units and Preferred OP Units, and the potential common shares, that were excluded from the computation of earnings per share as their effect would have been anti-dilutive:
 For the Year Ended December 31,
 202120202019
 Equivalent Shares (if converted)Equivalent Shares (if converted)Equivalent Shares (if converted)
Common OP Units— 5,853,814 — 
Series A Units (Variable Only)— 875,480 — 
Series B Units246,618 400,771 393,189 
Series D Units726,037 1,143,547 1,081,369 
972,655 8,273,612 1,474,558 
Schedule of Computation of Earnings Per Common Share The computation of earnings per share is as follows for the periods presented:
 For the Year Ended December 31,
 202120202019
Net income attributable to common stockholders$827,649 $481,779 $419,967 
Earnings and dividends allocated to participating securities(1,183)(706)(680)
Earnings for basic computations826,466 481,073 419,287 
Earnings and dividends allocated to participating securities— — 680 
Income allocated to noncontrolling interest - Preferred Operating Partnership Units and Operating Partnership Units43,093 — 23,727 
Fixed component of income allocated to noncontrolling interest - Preferred Operating Partnership (Series A Units)(2,288)— (2,288)
Net income for diluted computations$867,271 $481,073 $441,406 
Weighted average common shares outstanding:
Average number of common shares outstanding - basic 133,374,938 129,541,531 128,203,568 
OP Units5,752,902 — 6,006,114 
Series A Units875,480 — 875,480 
Unvested restricted stock awards included for treasury stock method— — 212,402 
Shares related to exchangeable senior notes and dilutive stock options12,708 43,298 1,136,205 
Average number of common shares outstanding - diluted140,016,028 129,584,829 136,433,769 
Earnings per common share
Basic$6.20 $3.71 $3.27 
Diluted$6.19 $3.71 $3.24