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Airport Redevelopment - Narrative (Details)
$ in Millions
1 Months Ended 12 Months Ended
Dec. 31, 2010
USD ($)
Dec. 31, 2017
USD ($)
concourse
terminal_gate
Dec. 31, 2016
Agreements and Obligations [Line Items]      
Special project bonds face amount $ 800    
Construction in progress, gross   $ 691  
Construction obligation   744  
Financial Guarantee | Revolving Credit Facility      
Agreements and Obligations [Line Items]      
Aggregate commitments guaranteed   $ 800  
JFK International Air Terminal LLC      
Agreements and Obligations [Line Items]      
Lease agreement, term 33 years    
LAX Redevelopment Project      
Agreements and Obligations [Line Items]      
Redevelopment project, term     7 years
LaGuardia Airport Redevelopment Project      
Agreements and Obligations [Line Items]      
Number of new gates in redeveloped terminal | terminal_gate   37  
Number of new concourses in redeveloped terminal | concourse   4  
Increase in concessions space (percent)   30.00%  
Port Authority contribution to redevelopment project   $ 600