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OPERATING SEGMENT INFORMATION (Tables) - USD ($)
$ in Millions

3 Months Ended

Mar. 31, 2022

Mar. 31, 2021

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Operating segment information is as follows (in millions):

			Three Months Ended March 31, 2022
			Mainline						Regional						Horizon						Consolidating & Other(a)						Air Group Adjusted(b)						Special Items(c)						Consolidated
Operating Revenues
Passenger revenues			$	1,243					$	268					$	—					$	—					$	1,511					$	—					$	1,511
CPA revenues			—						—						94						(94)						—						—						—
Mileage Plan other revenue			100						12						—						—						112						—						112
Cargo and other			57						—						—						1						58						—						58
Total Operating Revenues			1,400						280						94						(93)						1,681						—						1,681
Operating Expenses
Operating expenses, excluding fuel			1,194						262						99						(94)						1,461						75						1,536
Fuel expense			381						73						—						—						454						(107)						347
Total Operating Expenses			1,575						335						99						(94)						1,915						(32)						1,883
Non-operating Income (Expense)			1						—						(5)						—						(4)						—						(4)
Income (Loss) Before Income Tax			$	(174)					$	(55)					$	(10)					$	1					$	(238)					$	32					$	(206)
			Three Months Ended March 31, 2021
			Mainline						Regional						Horizon						Consolidating & Other(a)						Air Group Adjusted(b)						Special Items(c)						Consolidated
Operating Revenues
Passenger revenues			$	506					$	153					$	—					$	—					$	659					$	—					$	659
CPA revenues			—						—						104						(104)						—						—						—
Mileage Plan other revenue			80						14						—						—						94						—						94
Cargo and other			44						—						—						—						44						—						44
Total Operating Revenues			630						167						104						(104)						797						—						797
Operating Expenses
Operating expenses, excluding fuel			893						265						88						(109)						1,137						(382)						755
Fuel expense			174						52						—						(1)						225						(22)						203
Total Operating Expenses			1,067						317						88						(110)						1,362						(404)						958
Non-operating Income (Expense)			(7)						—						(5)						—						(12)						—						(12)
Income (Loss) Before Income Tax			$	(444)					$	(150)					$	11					$	6					$	(577)					$	404					$	(173)

(a) Includes consolidating entries, Air Group parent company, McGee Air Services, and other immaterial business units.

(b) The Air Group Adjusted column represents the financial information that is reviewed by management to assess performance of operations and determine capital allocation and excludes certain charges.

(c) Includes Payroll Support Program wage offsets, special items and mark-to-market fuel hedge accounting adjustments.

Nonoperating Income (Expense)

$ (4)

$ (12)

Interest income

7

7

Operating Expenses, Excluding Fuel

1,536

755

Economic fuel

347

203

Operating Expenses

1,883

958

Income (Loss) Before Income Tax

$ (206)

$ (173)

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Fuel costs incurred that are directly related to goods produced and sold and services rendered during the reporting period.

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