v3.21.2
Investment in Rental Property and Lease Arrangements - Additional Information (Detail)
9 Months Ended
Sep. 30, 2021
Property1
PropertyNumber
Property
Lessor Lease Description [Line Items]  
Number of real estate properties under operating leases | PropertyNumber 681
Number of real estate properties under direct financing leases 10
Number of real estate properties under sales-type leases | Property 1
Number of real estate properties under direct financing leases that include land option 3
Lessee, operating lease, existence of option to extend true
Lessee, finance lease, existence of option to extend true
Minimum  
Lessor Lease Description [Line Items]  
Lessor operating lease, initial terms 10 years
Lessor direct financing leases, initial terms 10 years
Maximum  
Lessor Lease Description [Line Items]  
Lessor operating lease, initial terms 20 years
Lessor direct financing leases, initial terms 20 years