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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Dec. 31, 2024
Accounting Policies [Abstract]  
Schedule of Reconciliation of Cash, Cash Equivalents, and Restricted Cash
The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the Consolidated Balance Sheets ("balance sheets") that sum to the total of the same such amounts shown within the Consolidated Statements of Cash Flows ("cash flows statement").

Reconciliation of cash, cash equivalents and restricted cash
December 31,
(in millions)202420232022
Current assets:
Cash and cash equivalents$3,069 $2,741 $3,266 
Restricted cash included in prepaid expenses and other168 199 138 
Noncurrent assets:
Restricted cash included in other noncurrent assets184 455 69 
Total cash, cash equivalents and restricted cash$3,421 $3,395 $3,473 
Schedule of Property, Plant and Equipment The following table summarizes our property and equipment:
Property and equipment by classification
December 31,
(in millions, except for estimated useful life)Estimated Useful Life20242023
Flight equipment(1)
25-34 years
$44,722 $40,976 
Ground property and equipment
3-40 years
10,695 9,986 
Information technology-related assets
3-15 years
3,135 3,307 
Flight and ground equipment under finance leasesLease term or estimated useful life1,196 1,862 
Advance payments for equipment1,075 1,062 
Less: accumulated depreciation and amortization(2)
(23,228)(21,707)
Total property and equipment, net$37,595 $35,486 
(1)Includes aircraft and associated engines and parts.
(2)Includes accumulated amortization for flight and ground equipment under finance leases in the amount of $371 million and $525 million at December 31, 2024 and 2023, respectively.