Debt Instrument, Contingent on Certain Conditions, Basis Spread on Variable Rate

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- Definition

Debt Instrument, Extension Term

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Joint Venture, Cash Distribution, Percent

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Joint Venture Ownership Percent

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- Definition

Note Payable, Maximum Additional Borrowing

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Amount of contractual principal due at origination of mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-X (SX)
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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Cap rate on an interest rate derivative such as an interest rate cap or collar. If market rates exceed the cap rate, a payment or receipt is triggered on the contract.

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Amount of realized and unrealized gain (loss) on investment.

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The increase (decrease) during the reporting period in the amount owed by the reporting entry in the form of loans and obligations (generally evidenced by promissory notes) made by the following types of related parties: a parent company and its subsidiaries; subsidiaries of a common parent; an entity and trust for the benefit of employees, such as pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management, an entity and its principal owners, management, or member of their immediate families, affiliates, or other parties with the ability to exert significant influence.

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The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a rate subject to change from time to time.

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- Definition

The number of real estate properties owned as of the balance sheet date.

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No definition available.

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The cash outflow associated with the purchase of real estate held-for-investment and real estate joint ventures.

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The cash inflow from the sale of an investment interest in a joint venture that the reporting entity has not previously accounted for using consolidation or the equity method of accounting.

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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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Amount of cash inflow (outflow) from long-term debt supported by a written promise to pay an obligation.

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No definition available.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Investments in Unconsolidated Joint Ventures - Narrative (Details)												12 Months Ended
	Feb. 02, 2022 USD ($)	Dec. 31, 2021 USD ($)	Oct. 26, 2021 USD ($)	Mar. 29, 2021 USD ($)	Dec. 29, 2020 USD ($)	Dec. 10, 2020 USD ($)	Nov. 17, 2020 USD ($)	Dec. 18, 2019 USD ($)	Aug. 16, 2019 USD ($)	Jul. 25, 2019 USD ($)	Feb. 22, 2019 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 property	Dec. 28, 2020	Jul. 31, 2020 property	Oct. 17, 2019 USD ($)	Sep. 12, 2019 USD ($)	Feb. 21, 2019 USD ($)
Fashion District Philadelphia
Investments in unconsolidated joint ventures:
Business acquisition, percentage of voting interests acquired						100.00%
Sears South Plains
Investments in unconsolidated joint ventures:
Business acquisition, percentage of voting interests acquired		100.00%										100.00%	100.00%
Fashion District Philadelphia
Investments in unconsolidated joint ventures:
Interest rate (as a percent)		4.00%										4.00%
FlatIron Crossing
Investments in unconsolidated joint ventures:
Repayments of debt												$ 7,650,000
The Shops at Atlas Park
Investments in unconsolidated joint ventures:
Debt issued											$ 9,189,000
Joint venture
Investments in unconsolidated joint ventures:
Number of properties \| property													9		9
Joint venture \| Maximum
Investments in unconsolidated joint ventures:
Decrease the mortgage note payable						$ 201,000,000
Joint venture \| Fashion District Philadelphia
Investments in unconsolidated joint ventures:
Repayment of mortgage note payable						100,000,000
Joint venture \| Fashion District Philadelphia \| Minimum
Investments in unconsolidated joint ventures:
Decrease the mortgage note payable						$ 301,000,000
Repaid accrued interest percentage						15.00%
Joint venture \| Fashion District Philadelphia \| Maximum
Investments in unconsolidated joint ventures:
Decrease the mortgage note payable						$ 201,000,000
Joint venture \| Fashion District Philadelphia
Investments in unconsolidated joint ventures:
Debt issued									$ 25,000,000	$ 26,000,000
Maximum additional borrowings										$ 100,000,000
Joint venture, cash distribution, percent						50.00%
Joint venture \| Fashion District Philadelphia \| LIBOR
Investments in unconsolidated joint ventures:
Variable interest rate spread (as a percent)										2.00%
Joint venture \| Tysons Tower
Investments in unconsolidated joint ventures:
Mortgage loan																	$ 190,000,000
Interest rate (as a percent)																	3.38%
Joint venture \| HPP-MAC WSP, LLC—One Westside \| Redevelopment construction loan
Investments in unconsolidated joint ventures:
Debt issued								$ 414,600,000
Joint venture \| HPP-MAC WSP, LLC—One Westside \| LIBOR \| Redevelopment construction loan
Investments in unconsolidated joint ventures:
Variable interest rate spread (as a percent)								1.70%
Variable interest rate spread, contingent (as a percent)								1.50%
Joint venture \| Tysons Corner LLC
Investments in unconsolidated joint ventures:
Debt issued							$ 95,000,000
Interest rate (as a percent)							3.43%
Joint venture \| Tysons Corner LLC \| Initial Funding
Investments in unconsolidated joint ventures:
Debt issued							$ 90,000,000
Joint venture \| Tysons Corner LLC \| Future Advance Potential
Investments in unconsolidated joint ventures:
Debt issued							5,000,000
Joint venture \| Tysons Corner LLC \| General Corporate Purposes
Investments in unconsolidated joint ventures:
Debt issued							$ 45,000,000
Joint venture \| FlatIron Crossing
Investments in unconsolidated joint ventures:
Interest rate (as a percent)					4.10%									3.85%
Extension term					1 year
Repayments of debt					$ 15,000,000
Joint venture \| FlatIron Crossing \| Subsequent event
Investments in unconsolidated joint ventures:
Debt issued	$ 175,000,000
Repayments of debt	$ 197,011,000
Joint venture \| FlatIron Crossing \| SOFR \| Subsequent event
Investments in unconsolidated joint ventures:
Variable interest rate spread (as a percent)	3.45%
Interest rate cap (as a percent)	4.00%
Joint venture \| The Shops at Atlas Park
Investments in unconsolidated joint ventures:
Mortgage loan											80,000,000							$ 57,751,000
Debt issued			$ 65,000,000								$ 18,379,000
Joint venture \| The Shops at Atlas Park \| LIBOR
Investments in unconsolidated joint ventures:
Variable interest rate spread (as a percent)			4.15%
Interest rate cap (as a percent)			3.00%
Joint venture \| West Acres Development, LLP
Investments in unconsolidated joint ventures:
Maximum additional borrowings																$ 6,500,000
Interest rate (as a percent)																3.72%
Joint venture \| Paradise Valley Mall
Investments in unconsolidated joint ventures:
Ownership percentage				5.00%
Payments for joint venture				$ 3,819,000
Joint venture \| North Bridge,Chicago Illinois
Investments in unconsolidated joint ventures:
Loss on Investments		$ (28,276,000)
Joint venture \| North Wabash,Chicago Illinois
Investments in unconsolidated joint ventures:
Proceeds from divestiture of interest in joint venture												$ 21,000,000
Joint venture \| Fashion District Philadelphia \| LIBOR
Investments in unconsolidated joint ventures:
Variable interest rate spread (as a percent)								3.50%
Interest rate (as a percent)						0.50%
Extension term						1 year