Agreements and Transactions with Related Parties - Narratives (Details)		3 Months Ended			9 Months Ended
	Apr. 13, 2020 USD ($) $ / shares shares	Sep. 30, 2020 USD ($) investment shares	Apr. 12, 2020 shares	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) investment shares	Sep. 30, 2019 USD ($)	Jul. 31, 2020 USD ($)	Feb. 20, 2020 USD ($)	Feb. 19, 2020 USD ($)	Dec. 31, 2019 USD ($) shares
Related Party Transaction
Transition services agreement term	12 months
Preferred stock, shares issued (shares) | shares		0			0					0
Common stock, shares issued (in shares) | shares		175,396,158			175,396,158					172,278,242
Disposition of goodwill					$ 34,273,000
Equity investments		$ 288,444,000			$ 288,444,000					$ 324,004,000
Advisory Agreements with REIT
Percentage of available cash distribution to advisor					10.00%
Maximum borrowing capacity		2,750,000,000			$ 2,750,000,000			$ 2,100,000,000	$ 1,850,000,000
Other Transactions with Affiliates
Loss on change in control of interests		$ 0		$ 8,416,000	$ 0	$ 8,416,000
Jointly owned investments | investment		9			9
Jointly owned investment, accounted for under the equity method investments | investment		8			8
CWI 2 Class A Common Stock
Related Party Transaction
Class of warrant or right, number of securities called by warrants or rights (in shares) | shares		0.9106			0.9106
WLT
Related Party Transaction
Shares owned (shares) | shares	5,531,025
CWI 1
Related Party Transaction
Shares owned (shares) | shares			6,074,046
CWI 1 | Affiliated Entity
Advisory Agreements with REIT
Percentage of available cash distribution to advisor			20.00%
CWI 2 | Affiliated Entity
Advisory Agreements with REIT
Percentage of available cash distribution to advisor			25.00%
CESH | Affiliated Entity
Advisory Agreements with REIT
Loans receivable, related party										46,300,000
Accrued interest										$ 1,500,000
CPA:18 – Global | Affiliated Entity
Advisory Agreements with REIT
Maximum borrowing capacity							$ 25,000,000.0
CPA:18 – Global | Maximum | Affiliated Entity
Advisory Agreements with REIT
Personnel and overhead reimbursement (percentage)		1.00%			1.00%					1.00%
Average market value of investment | CWI 1 | Affiliated Entity
Advisory Agreements with REIT
Asset management fees earned (percentage)			0.50%
Average market value of investment | CWI 2 | Affiliated Entity
Advisory Agreements with REIT
Asset management fees earned (percentage)			0.55%
Aggregate cost of investment | CESH | Affiliated Entity
Advisory Agreements with REIT
Percentage of acquisition fees earned (structuring revenue percentage)					2.00%
Aggregate cost of investment | CPA:18 – Global | Affiliated Entity
Advisory Agreements with REIT
Percentage of acquisition fees earned (structuring revenue percentage)					4.50%
Investment Management
Related Party Transaction
Disposition of goodwill	$ 34,300,000				$ 34,273,000
CWI 2 | Affiliated Entity
Related Party Transaction
Equity investments		$ 0			0					$ 33,669,000
WLT | Preferred Stock | Level 3
Related Party Transaction
Equity method investment fair value		46,300,000			46,300,000
Affiliated Entity | CWI 1 and CWI 2
Related Party Transaction
Gain on sale of equity method investment	9,900,000
Equity investments	$ 500,000
Affiliated Entity | Common Stock | WLT
Related Party Transaction
Shares owned (shares) | shares	12,208,243
Equity investments		$ 48,400,000			48,400,000
Affiliated Entity | Common Class A | CWI 2
Related Party Transaction
Shares owned (shares) | shares			3,836,669
Affiliated Entity | CWI 2 | Preferred Stock
Related Party Transaction
Equity method investment fair value	$ 46,300,000
Affiliated Entity | CWI 2 | Common Stock
Related Party Transaction
Equity method investment fair value	$ 11,600,000
CWI 2 | Affiliated Entity
Related Party Transaction
Preferred stock, shares issued (shares) | shares	1,300,000
Preferred stock liquidation preference (usd per share) | $ / shares	$ 50.00
Common stock, shares issued (in shares) | shares	2,840,549
Gain on sale of equity method investment					$ 33,000,000.0
Preferred stock dividend rate (percentage)					5.00%