Organization, Basis of Presentation and Summary of Significant Accounting Policies - Schedule of Assets and Liabilities Included in Consolidated Balance Sheets (Details) - USD ($) $ in Thousands		Sep. 30, 2022		Dec. 31, 2021		Sep. 30, 2021	Dec. 31, 2020
VIE ASSETS
Operating real estate, net		$ 3,374,453		$ 3,219,373
Real estate under development		186,360		203,773
Notes receivable, net		123,966		153,886
Investments in and advances to unconsolidated affiliates		317,422		322,326
Other assets, net		234,558		186,509
Right-of-use assets - operating leases, net		38,158		40,743
Cash and cash equivalents		18,068		17,746		$ 16,158	$ 18,699
Restricted cash		12,635		9,813		11,364	$ 11,096
Rents receivable, net		46,821		43,625
Total VIE assets		4,363,498	[1],[2]	4,261,746	[2]	$ 4,184,285
VIE LIABILITIES
Mortgage and other notes payable, net		945,235		1,140,293
Unsecured notes payable, net		694,310		559,040
Accounts payable and other liabilities		201,033		236,415
Lease liability - operating leases, net		36,157		38,759
Total VIE liabilities	[2]	2,082,295		2,111,811
VIE
VIE ASSETS
Operating real estate, net		1,468,831		1,482,636
Real estate under development		132,612		161,485
Notes receivable, net		0		725
Investments in and advances to unconsolidated affiliates		241,641		200,827
Other assets, net		97,025		94,303
Right-of-use assets - operating leases, net		2,636		2,935
Cash and cash equivalents		14,629		9,761
Restricted cash		12,573		9,757
Rents receivable, net		17,076		16,126
Total VIE assets		1,987,023		1,978,555
VIE LIABILITIES
Mortgage and other notes payable, net		766,935		948,045
Unsecured notes payable, net		49,697		162,828
Accounts payable and other liabilities		98,694		96,212
Lease liability - operating leases, net		2,764		3,077
Total VIE liabilities		$ 918,090		$ 1,210,162

[1] Real estate at cost and total assets for the Funds segment include $661.7 million and $654.0 million, or $418.5 million and $190.0 million net of non-controlling interests, related to Fund II’s City Point property at September 30, 2022 and 2021, respectively.

[2] Represents the consolidated assets and liabilities of Acadia Realty Limited Partnership (the "Operating Partnership"), which is a consolidated variable interest entity ("VIE"). As of September 30, 2022, the assets and liabilities of the Operating Partnership includes $2.0 billion and $0.9 billion of assets and liabilities, respectively, of certain VIEs that are consolidated by the Operating Partnership. As of December 31, 2021, the assets and liabilities of the Operating Partnership includes $2.0 billion and $1.2 billion of assets and liabilities, respectively, of certain VIEs that are consolidated by the Operating Partnership (Note 1).