Special Charges (Credits) (Tables)

12 Months Ended

Dec. 31, 2023

Restructuring and Related Activities [Abstract]

Components of Special Charges

For the years ended December 31, operating and nonoperating special charges (credits) and unrealized (gains) losses on investments in the statements of consolidated operations consisted of the following (in millions):

Operating:	2023		2022		2021
Labor contract ratification bonuses	$	814	$	—	$	—
CARES Act grant	—		—		(4,021)
Severance and benefit costs	—		—		438
Impairment of assets	—		—		97
(Gains) losses on sale of assets and other special charges	135		140		119
Total operating special charges (credits)	949		140		(3,367)
Nonoperating unrealized (gains) losses on investments, net	(27)		(20)		34
Nonoperating debt extinguishment and modification fees	11		7		50
Nonoperating special termination benefits and settlement losses	—		—		31
Total nonoperating special charges and unrealized (gains) losses on investments, net	(16)		(13)		115
Total operating and nonoperating special charges (credits) and unrealized (gains) losses on investments, net	933		127		(3,252)
Income tax expense (benefit), net of valuation allowance	(214)		(33)		728
Total operating and nonoperating special charges (credits) and unrealized (gains) losses on investments, net of income taxes	$	719	$	94	$	(2,524)