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Debt - Outstanding Indebtedness (Details)			3 Months Ended
	Aug. 09, 2022	Aug. 31, 2021 USD ($)	Mar. 31, 2022 USD ($) extension	Dec. 31, 2021 USD ($)
Debt
Duration used in interest rate calculation (in days)			360 days
One Westside and 10850 Pico | VIE, primary beneficiary
Debt
VIE, ownership Interest			75.00%
Periodic payment, debt service payment term			10 years
Interest Rate Swaps | Designated as hedging Instrument
Debt
Notional Amount			$ 500,000,000	$ 500,000,000
Hollywood Media Portfolio
Debt
VIE, ownership Interest			51.00%
1918 Eighth
Debt
VIE, ownership Interest			55.00%
Hill7
Debt
VIE, ownership Interest			55.00%
Hollywood Media Portfolio | Interest Rate Swaps | Designated as hedging Instrument
Debt
Notional Amount			$ 350,000,000
Hollywood Media Portfolio B | Interest Rate Swaps | Designated as hedging Instrument
Debt
Notional Amount			$ 350,000,000
Hollywood Media Portfolio B | LIBOR | Interest Rate Swaps | Designated as hedging Instrument
Debt
Derivative, basis spread on variable rate			1.76%
Hollywood Media Portfolio D | Interest Rate Swaps | Designated as hedging Instrument
Debt
Notional Amount			$ 125,000,000
Hollywood Media Portfolio D | LIBOR | Interest Rate Swaps | Designated as hedging Instrument
Debt
Derivative, basis spread on variable rate			1.43%
Unsecured debt
Debt
Total			$ 2,260,000,000	2,050,000,000
Unsecured debt | Series A notes
Debt
Total			$ 110,000,000	110,000,000
Interest rate			4.34%
Unsecured debt | Series B notes
Debt
Total			$ 259,000,000	259,000,000
Interest rate			4.69%
Unsecured debt | Series C notes
Debt
Total			$ 56,000,000	56,000,000
Interest rate			4.79%
Unsecured debt | Series D notes
Debt
Total			$ 150,000,000	150,000,000
Interest rate			3.98%
Unsecured debt | Series E notes
Debt
Total			$ 50,000,000	50,000,000
Interest rate			3.66%
Unsecured debt | 3.95% Registered senior notes
Debt
Total			$ 400,000,000	400,000,000
Interest rate			3.95%
Unsecured debt | 4.65% Registered senior notes
Debt
Total			$ 500,000,000	500,000,000
Interest rate			4.65%
Unsecured debt | 3.25% Registered senior notes
Debt
Total			$ 400,000,000	400,000,000
Interest rate			3.25%
Unsecured debt | Revolving credit facility
Debt
Total			$ 335,000,000	125,000,000
Maximum borrowing capacity			$ 1,000,000,000
Extension term (in years)			6 months
Unsecured debt | Revolving credit facility | GBP
Debt
Maximum borrowing capacity			$ 250,000,000
Unsecured debt | Revolving credit facility | CAD
Debt
Maximum borrowing capacity			$ 250,000,000
Unsecured debt | Revolving credit facility | Minimum
Debt
Commitment fee percentage			0.15%
Unsecured debt | Revolving credit facility | Maximum
Debt
Commitment fee percentage			0.30%
Unsecured debt | Revolving credit facility | LIBOR
Debt
Basis spread on variable rate			1.20%
Unsecured debt | Revolving credit facility | LIBOR | Minimum
Debt
Basis spread on variable rate			1.05%
Unsecured debt | Revolving credit facility | LIBOR | Maximum
Debt
Basis spread on variable rate			1.50%
Secured debt
Debt
Total			$ 1,740,720,000	1,714,874,000
Secured debt | Hollywood Media Portfolio
Debt
Total			890,186,000	890,186,000
Debt instrument, face amount			$ 1,100,000,000	1,100,000,000
Extension term (in years)			1 year
Debt instrument, number of extension options | extension			3
Payments to acquire bonds		$ 209,800,000
Secured debt | Hollywood Media Portfolio | LIBOR
Debt
Basis spread on variable rate			1.17%
Secured debt | Hollywood Media Portfolio | LIBOR | Forecast | Subsequent event
Debt
Basis spread on variable rate	0.99%
Secured debt | Acquired Hollywood Media Portfolio debt
Debt
Acquired Hollywood Media Portfolio debt			$ 209,814,000	209,814,000
Secured debt | Acquired Hollywood Media Portfolio debt | LIBOR
Debt
Basis spread on variable rate			1.55%
Secured debt | One Westside and 10850 Pico
Debt
Total			$ 267,234,000	241,388,000
Maximum borrowing capacity			$ 414,600,000
Secured debt | One Westside and 10850 Pico | LIBOR
Debt
Basis spread on variable rate			1.70%
Secured debt | Element LA
Debt
Total			$ 168,000,000	168,000,000
Interest rate			4.59%
Secured debt | 1918 Eighth
Debt
Total			$ 314,300,000	314,300,000
Secured debt | 1918 Eighth | LIBOR
Debt
Basis spread on variable rate			1.30%
Secured debt | Hill7
Debt
Total			$ 101,000,000	101,000,000
Interest rate			3.38%
Unsecured and Secured Debt
Debt
Total			$ 4,000,720,000	3,764,874,000
Deferred financing costs and discounts, net			(28,069,000)	(30,971,000)
Debt			3,972,651,000	3,733,903,000
In-substance defeased debt
Debt
Total			127,294,000
Debt			$ 127,294,000	128,212,000
Interest rate			4.47%
Joint venture partner debt
Debt
Total			$ 66,136,000
Debt			$ 66,136,000	$ 66,136,000
Interest rate			4.50%
Extension term (in years)			2 years
Debt instrument, number of extension options | extension			2

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