Annual report pursuant to Section 13 and 15(d)

Unsecured Line of Credit and Term Notes - Borrowings Outstanding on Unsecured Line of Credit and Term Notes (Detail)

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Unsecured Line of Credit and Term Notes - Borrowings Outstanding on Unsecured Line of Credit and Term Notes (Detail) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Debt Instrument [Line Items]    
Revolving line of credit borrowings $ 0 $ 0
Total term note principal balance outstanding 2,775,000 2,175,000
Less: unamortized debt issuance costs (16,008) (12,833)
Less: unamortized senior term note discount (11,154) (6,710)
Term notes payable 2,747,838 2,155,457
Term Note Due April 8, 2024 [Member]    
Debt Instrument [Line Items]    
Total term note principal balance outstanding 175,000 175,000
Senior Term Note Due July 1, 2026 [Member]    
Debt Instrument [Line Items]    
Total term note principal balance outstanding 600,000 600,000
Senior Term Note Due December 15, 2027 [Member]    
Debt Instrument [Line Items]    
Total term note principal balance outstanding 450,000 450,000
Term Note Due July 21, 2028 [Member]    
Debt Instrument [Line Items]    
Total term note principal balance outstanding 200,000 200,000
Senior Term Note Due June 15, 2029 [Member]    
Debt Instrument [Line Items]    
Total term note principal balance outstanding 350,000 350,000
Senior Term Note Due October 15, 2030 [Member]    
Debt Instrument [Line Items]    
Total term note principal balance outstanding 400,000 $ 400,000
Senior Term Note Due October 15, 2031 [Member]    
Debt Instrument [Line Items]    
Total term note principal balance outstanding $ 600,000