Restricted Cash, Other Assets and Other Liabilities - Schedule of Accrued and Other Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Restricted Cash, Other Assets And Other Liabilities [Abstract]
Tenant security deposits and payable	$ 15,719		$ 15,719		$ 15,293
Borrower escrow deposits	7,327		7,327		9,903
Deferred income	33,787		33,787		32,318
Interest payable	63,972		63,972		38,487
Derivative liabilities (Note 11)	94,677		94,677		127,531
Current and deferred income tax liability	195,278		195,278		222,206
Operating lease liability	178,000		178,000		181,297
Accrued compensation	48,115		48,115		83,351
Accrued carried interest and incentive fee compensation	230		230		50,360
Accrued real estate and other taxes	42,967		42,967		39,923
Accounts payable and accrued expenses	131,047		131,047		143,852
Other liabilities	58,828		58,828		71,377
Total accrued and other liabilities	869,947		869,947		1,015,898
Deferred asset management fee income	17,700		17,700		$ 18,300
Deferred asset management fee income recognized	$ 6,600	$ 400	$ 8,700	$ 700
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Fee income, weighted-average recognition period					1 year 2 months 12 days
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Fee income, weighted-average recognition period	1 year 6 months		1 year 6 months