SHAREHOLDER'S EQUITY (Tables)

12 Months Ended

Dec. 31, 2022

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

A roll forward of the amounts included in accumulated other comprehensive loss, net of tax (in millions), is shown below for the twelve months ended December 31, 2022:

	Marketable Securities		Employee Benefit Plan		Interest Rate Derivatives		Total
Balance at December 31, 2019, net of tax effect of $150	$	9	$	(469)	$	(5)	$	(465)
Reclassifications into earnings, net of tax effect of ($5)	(11)		23		2		14
Change in value, net of tax effect of $15	25		(52)		(16)		(43)
Balance at December 31, 2020, net of tax effect of $160	$	23	$	(498)	$	(19)	$	(494)
Reclassifications into earnings, net of tax effect of ($6)	(4)		25		—		21
Change in value, net of tax effect of ($71)	(23)		221		13		211
Balance at December 31, 2021, net of tax effect of $83	$	(4)	$	(252)	$	(6)	$	(262)
Reclassifications into earnings, net of tax effect of ($4)	6		2		—		8
Change in value, net of tax effect of $43	(82)		(69)		17		(134)
Balance at December 31, 2022, net of tax effect of $122	$	(80)	$	(319)	$	11	$	(388)

Schedule of Stockholders' Equity Note, Warrants or Rights

Total warrants outstanding are as follows as of December 31, 2022:

	Number of shares of ALK common stock	Strike Price
PSP 1	928,127	31.61
CARES Act loan warrants	427,080	31.61
PSP 2	305,499	52.25
PSP 3	221,812	66.39
Outstanding December 31, 2022	1,882,518