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Organization (Details)	12 Months Ended
	Dec. 31, 2021 ft² property	Jul. 29, 2021	Dec. 31, 2020 property	Dec. 24, 2020	Jun. 05, 2019
Real Estate Properties
Number of properties | property	66		0
Square Feet | ft²	20,188,840
Customer Concentration Risk | Rentable Square Feet | 15 largest tenants
Real Estate Properties
Contribution risk, percentage	38.70%
Customer Concentration Risk | Rentable Square Feet | Technology Sector
Real Estate Properties
Contribution risk, percentage	30.70%
Customer Concentration Risk | Rentable Square Feet | Media And Entertainment Sector
Real Estate Properties
Contribution risk, percentage	17.70%
Customer Concentration Risk | Revenue Benchmark | Google Inc. | Office
Real Estate Properties
Contribution risk, percentage	12.60%
California | Geographic Concentration Risk | Property
Real Estate Properties
Contribution risk, percentage	77.60%
Consolidated portfolio
Real Estate Properties
Number of properties | property	62
Square Feet | ft²	17,997,550
Unconsolidated portfolio
Real Estate Properties
Number of properties | property	4
Square Feet | ft²	2,191,290
Unconsolidated portfolio | Joint Venture Bentall Centre Properties
Real Estate Properties
Joint venture, ownership percentage	20.00%				20.00%
Unconsolidated portfolio | Joint Venture Sunset Glenoaks Studios Property
Real Estate Properties
Joint venture, ownership percentage	50.00%			50.00%
Unconsolidated portfolio | Joint Venture Waltham Cross Studios
Real Estate Properties
Joint venture, ownership percentage		35.00%
Office | Consolidated portfolio
Real Estate Properties
Number of properties | property	53
Square Feet | ft²	14,268,741
Office | Unconsolidated portfolio
Real Estate Properties
Number of properties | property	1
Square Feet | ft²	1,500,290
Studio | Consolidated portfolio
Real Estate Properties
Number of properties | property	3
Square Feet | ft²	1,224,403
Studio | Unconsolidated portfolio
Real Estate Properties
Number of properties | property	1
Square Feet | ft²	241,000
Land | Consolidated portfolio
Real Estate Properties
Number of properties | property	6
Square Feet | ft²	2,504,406
Land | Unconsolidated portfolio
Real Estate Properties
Number of properties | property	2
Square Feet | ft²	450,000

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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