XML 127 R43.htm IDEA: XBRL DOCUMENT v3.22.4
Significant Accounting Policies - Narrative (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2022
USD ($)
segment
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Summary Of Significant Accounting Policies [Line Items]      
Expiration period for refundable tickets 1 year    
Number of operating segments | segment 1    
Revenue $ 44,955 $ 24,634 $ 15,355
Period over which miles are expected to be redeemed two years    
Senior secured notes $ 6,100    
Carrying value of computer software 471 499  
Impairment, long-lived asset   $ 97 $ 94
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration]   Restructuring, Settlement and Impairment Provisions Restructuring, Settlement and Impairment Provisions
Amortization expense 41 $ 49 $ 55
Projected amortization expense in 2023 37    
Projected amortization expense in 2024 32    
Projected amortization expense in 2025 28    
Projected amortization expense in 2026 18    
Projected amortization expense in 2027 11    
Advertising expense $ 165 99 87
Minimum      
Summary Of Significant Accounting Policies [Line Items]      
Frequent flier program expiration period 1 year    
Maximum      
Summary Of Significant Accounting Policies [Line Items]      
Frequent flier program expiration period 7 years    
Computer software      
Summary Of Significant Accounting Policies [Line Items]      
Depreciation expense $ 166 182 172
Advance Ticket Sales      
Summary Of Significant Accounting Policies [Line Items]      
Expiration period for advance ticket sales 12 months    
Revenue recognized $ 3,300 1,800 3,000
Ancillary Fees Recorded within Passenger Revenues      
Summary Of Significant Accounting Policies [Line Items]      
Revenue 3,400 2,200 1,300
Other Operating Revenue      
Summary Of Significant Accounting Policies [Line Items]      
Revenue 2,752 2,088 1,902
Other Operating Revenue | Chase and Other Partner Agreements      
Summary Of Significant Accounting Policies [Line Items]      
Revenue $ 2,400 $ 1,800 $ 1,700