Fair Value Disclosures (Narrative) (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) mortgagenotes		Dec. 31, 2020 USD ($) mortgagenotes		Dec. 31, 2019 USD ($)
Impairment charges	$ 2,711,000		$ 85,657,000		$ 2,206,000
Debt	2,804,365,000		3,694,443,000
Real Estate Investment Property, Net	4,713,091,000		4,851,302,000
Operating Lease, Right-of-Use Asset	180,808,000		163,766,000
Investment in joint ventures	36,670,000		28,208,000
Other assets	69,918,000		70,223,000
Equity Method Investment, Other than Temporary Impairment	0		3,247,000		0
Provision for Loan, Lease, and Other Losses	(21,972,000)		30,695,000
Proceeds from promissory note receivable paydown	8,816,000		103,000		3,738,000
Note, 8.0%, due May 2, 2024
Provision for Loan, Lease, and Other Losses	$ 16,900,000		$ 25,500,000
Number Of Notes Receivable | mortgagenotes	1		1
Note Receivable, Face amount	$ 8,600,000		$ 12,600,000
Note Receivable, unfunded commitment			12,900,000
Proceeds from promissory note receivable paydown	8,400,000
Unrecorded Unconditional Purchase Obligation, Change of Amount as Result of Variable Components	$ 8,500,000
Real Estate Investment | Experiential Reportable Operating Segment [Member]
Impairment charges			$ 70,700,000
Number of impaired properties	2		9
Right-of-Use Assets, Operating Lease | Experiential Reportable Operating Segment [Member]
Impairment charges	$ 0	[1]	$ 15,009,000		$ 0
Number of impaired properties			2
Fixed Rate Mortgage Notes Receivable [Member]
Mortgage Notes and Related Accrued Interest Receivable, Net	$ 370,200,000		$ 365,600,000
Weighted average interest rate of mortgage notes receivable	9.04%		9.03%
Receivable interest rate minimum	7.01%		7.01%
Receivable interest rate maximum	11.96%		11.78%
Fair value of notes receivable	$ 400,100,000		$ 394,000,000
Weighted market rate used for determining future cash flow for notes receivable	8.05%		8.11%
Variable Rate Debt [Member]
Debt	$ 25,000,000		$ 1,000,000,000
Long-term debt, weighted average interest rate	0.15%		2.23%
Variable Rate Converted to Fixed Rate [Member]
Debt	$ 25,000,000		$ 425,000,000
Fixed Rate Debt [Member]
Long-term Debt, Fair Value	2,930,000,000		2,690,000,000
Debt	$ 2,820,000,000		$ 2,720,000,000
Long-term debt, weighted average interest rate	4.34%		4.70%
Weighted market rate for determining fair value of debt	3.43%		4.70%
Minimum [Member] | Fixed Rate Mortgage Notes Receivable [Member]
market rate used as discount factor to determine fair value of notes	7.50%		7.50%
Minimum [Member] | Fixed Rate Debt [Member]
market rate used as discount factor to determine fair value of debt	2.25%		4.09%
Maximum [Member] | Fixed Rate Mortgage Notes Receivable [Member]
market rate used as discount factor to determine fair value of notes	9.25%		10.00%
Maximum [Member] | Fixed Rate Debt [Member]
market rate used as discount factor to determine fair value of debt	4.56%		5.81%
Fair Value, Nonrecurring [Member]
Real Estate Investment Property, Net	$ 6,956,000		$ 39,544,000
Operating Lease, Right-of-Use Asset			12,953,000
Investment in joint ventures			771,000
Other assets	0		0	[2]
Fair Value, Inputs, Level 1 | Fair Value, Nonrecurring [Member]
Real Estate Investment Property, Net	0		0
Operating Lease, Right-of-Use Asset			0
Investment in joint ventures			0
Other assets	$ 0		$ 0
Fair Value, Inputs, Level 2 [Member] | Real Estate Investment | Experiential Reportable Operating Segment [Member]
Number of impaired properties	2		6
Fair Value, Inputs, Level 2 [Member] | Fair Value, Nonrecurring [Member]
Real Estate Investment Property, Net	$ 6,956,000		$ 29,684,000
Operating Lease, Right-of-Use Asset			0
Investment in joint ventures			0
Other assets	0		$ 0	[2]
Fair Value, Inputs, Level 3 [Member]
Fair Value Input, Terminal Capitalization Rate			8.75%
Fair Value, Inputs, Level 3 [Member] | Real Estate Investment | Experiential Reportable Operating Segment [Member]
Number of impaired properties			3
Fair Value, Inputs, Level 3 [Member] | Minimum [Member]
Fair Value Input, Discount Rate			9.00%
Fair Value Input, price per square foot			$ 9
Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | Right-of-Use Assets, Operating Lease
Fair Value Input, Discount Rate			8.00%
Fair Value Input, price per square foot			$ 10
Fair Value, Inputs, Level 3 [Member] | Maximum [Member]
Fair Value Input, Discount Rate			12.30%
Fair Value Input, price per square foot			$ 28
Fair Value, Inputs, Level 3 [Member] | Maximum [Member] | Right-of-Use Assets, Operating Lease
Fair Value Input, Discount Rate			8.50%
Fair Value Input, price per square foot			$ 16
Fair Value, Inputs, Level 3 [Member] | Fair Value, Nonrecurring [Member]
Real Estate Investment Property, Net	0		9,860,000
Operating Lease, Right-of-Use Asset			12,953,000
Investment in joint ventures			771,000
Other assets	$ 0		$ 0

[1] (3) During the year ended December 31, 2020, the Company recognized impairment charges of $15.0 million related to the operating lease right-of-use assets at two of its properties. See Note 4 for the details on these impairments.

[2] (1) Includes collateral dependent notes receivable, which are presented within "Other assets" in the accompanying consolidated balance sheets.