Commitments and Contingencies (Narrative) (Details) ft² in Thousands	1 Months Ended	6 Months Ended
	Jan. 31, 2022 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Jul. 31, 2018 USD ($) ft²
Other Commitments
Right-of-use assets		$ 685,962,000	$ 337,197,000
Lease liabilities		727,641,000	$ 370,206,000
Guarantees and master leases		1,595,000,000
Clawback payment		25,200,000
Commitment to fund additional capital to partially owned entities		10,300,000
Construction commitment		459,000,000
General Liability
Insurance
Insurance limit per property		300,000,000
Insurance limit per occurrence		300,000,000
Disease Coverage
Insurance
Insurance limit per property		250,000,000
All Risk And Rental Value
Insurance
Insurance limit per occurrence		2,000,000,000
Earthquake California Properties
Insurance
Insurance limit per occurrence		350,000,000
Insurance maximum coverage limit in aggregate		$ 350,000,000
Vornado deductible, percentage of property value		5.00%
Terrorism Acts
Insurance
Insurance limit per occurrence		$ 6,000,000,000
Insurance maximum coverage limit in aggregate		6,000,000,000
Non-Certified Acts of Terrorism
Insurance
Insurance maximum coverage limit in aggregate		1,200,000,000
NBCR Acts
Insurance
Insurance limit per occurrence		5,000,000,000
Insurance maximum coverage limit in aggregate		5,000,000,000
PPIC | NBCR Acts
Insurance
Insurance deductible		$ 1,799,727
Insurance deductible percentage of balance of covered loss		20.00%
Joint Venture | Farley Office and Retail
Other Commitments
Equity method ownership percentage		95.00%
Capital contributions		$ 92,400,000		$ 92,400,000
Affiliated Entity | Farley Office and Retail
Other Commitments
Equity method ownership percentage		5.00%
345 Montgomery Street | Regus PLC
Other Commitments
Guarantor obligations, maximum exposure, undiscounted					$ 90,000,000
PENN 1
Other Commitments
Term of contract	25 years
Length of extension available (years)	25 years
Finance lease liability	$ 350,000,000
Finance lease, right-of-use asset	$ 350,000,000
Subsidiary of Regus PLC | 345 Montgomery Street
Other Commitments
Square footage of real estate property (in sqft) | ft²					78
Lessor, operating lease, lease not yet commenced, term of contract					15 years
Unsecured Revolving Credit Facilities
Other Commitments
Outstanding letters of credit		$ 15,273,000