AIRPORT REDEVELOPMENT (Details)	12 Months Ended			84 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($) gate	Dec. 31, 2023 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2020 concourse gate	Dec. 31, 2018 USD ($)
Agreements and Obligations [Line Items]
Operating lease assets	$ 7,004,000,000	$ 7,036,000,000		$ 7,004,000,000
Financial Guarantee | Revolving Credit Facility
Agreements and Obligations [Line Items]
Aggregate commitments guaranteed					$ 626,000,000
JFK Terminal Redevelopment Project
Agreements and Obligations [Line Items]
Number of new gates | gate			10
Total expected project costs		1,600,000,000
LAX Redevelopment Project
Agreements and Obligations [Line Items]
Total expected project costs	2,400,000,000			2,400,000,000
Expected net projects costs	600,000,000			600,000,000
Project costs reflected as investing cash flows				350,000,000
Project costs reflected as operating cash flows				200,000,000
Operating lease assets	200,000,000			200,000,000
LAX Redevelopment Project | City of Los Angeles
Agreements and Obligations [Line Items]
Total appropriation to date by city	1,800,000,000			1,800,000,000
Maximum reimbursement by city	1,800,000,000			1,800,000,000
LaGuardia Airport Redevelopment Project
Agreements and Obligations [Line Items]
Total expected project costs	4,300,000,000			4,300,000,000
Expected net projects costs	3,800,000,000			3,800,000,000
Number of new gates planned | gate						37
Number of concourses for gates | concourse						4
Port Authority contribution to redevelopment project							$ 500,000,000
Amount spent on project costs	$ 500,000,000	$ 650,000,000	$ 950,000,000	$ 3,700,000,000