Net Investment In Sales-type Leases and Ground Lease Receivables (Schedule of Net Investment in Sales-type Leases) (Details) $ in Thousands		12 Months Ended
		Dec. 31, 2021 USD ($) lease	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Lessor, Lease, Description [Line Items]
Total undiscounted cash flows		$ 23,707,424	$ 13,676,701
Unguaranteed estimated residual value		2,319,761	1,243,292
Present value discount		(23,614,469)	(13,614,474)
Net investment in sales-type leases	[1]	$ 2,412,716	1,305,519
Number of ground leases | lease		23
Ground leases term		99 years 3 months 18 days
Interest income from sales-type leases	[2]	$ 118,824	81,844	$ 18,531
iStar Inc.
Lessor, Lease, Description [Line Items]
Total undiscounted cash flows		$ 1,676,000
Number of ground leases | lease		3
Interest income from sales-type leases		$ 8,400	$ 8,200	$ 5,000
iStar Inc. | Weighted Average
Lessor, Lease, Description [Line Items]
Ground leases term		96 years

[1] Refer to Note 2 for details on the Company’s consolidated variable interest entities ("VIEs").

[2] For the years ended December 31, 2021, 2020 and 2019, the Company recorded $8.4 million, $8.2 million and $5.0 million, respectively, of “Interest income from sales-type leases” in its consolidated statements of operations from its Ground Leases with iStar Inc. (“iStar”).