SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2022

Accounting Policies [Abstract]

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)	2022		2021		2020
Current assets:
Cash and cash equivalents	$	3,266	$	7,933	$	8,307
Restricted cash included in prepaid expenses and other	138		163		192
Noncurrent assets:
Restricted cash included in other noncurrent assets	69		473		1,556
Total cash, cash equivalents and restricted cash	$	3,473	$	8,569	$	10,055

Summary of property and equipment by classification

The following table summarizes our property and equipment:

Property and equipment by classification
		December 31,
(in millions, except for estimated useful life)	Estimated Useful Life	2022		2021
Flight equipment	25-34 years	$	38,091	$	33,368
Ground property and equipment	3-40 years	8,996		7,758
Information technology-related assets	3-15 years	3,375		3,389
Flight and ground equipment under finance leases	Shorter of lease term or estimated useful life	1,950		2,052
Advance payments for equipment		1,067		853
Less: accumulated depreciation and amortization(1)		(20,370)		(18,671)
Total property and equipment, net		$	33,109	$	28,749

(1)Includes accumulated amortization for flight and ground equipment under finance leases in the amount of $463 million and $456 million at December 31, 2022 and 2021, respectively.