RETIREMENT BENEFITS (Tables)

12 Months Ended

Dec. 31, 2023

Retirement Benefits [Abstract]

Schedule Of Defined Benefit Obligations And Assets

Changes in defined benefit pension plan obligations, assets, funded status and amounts recognized in the consolidated balance sheets were as follows:

	Year Ended December 31,
Dollars in millions	2023		2022
Benefit obligations at beginning of year	$	1,976	$	2,935
Service cost—benefits earned during the year	29		36
Interest cost	80		42
Settlements and curtailments	(41)		(58)
Actuarial (gains)/losses	165		(760)
Benefits paid	(65)		(68)
Foreign currency and other	94		(151)
Benefit obligations at end of year	$	2,238	$	1,976
Fair value of plan assets at beginning of year	$	2,027	$	2,815
Actual return on plan assets	130		(570)
Employer contributions	56		76
Settlements	(38)		(53)
Benefits paid	(65)		(68)
Foreign currency and other	102		(173)
Fair value of plan assets at end of year	$	2,212	$	2,027
Funded status	$	(26)	$	51
Assets/(Liabilities) recognized:
Other non-current assets	$	284	$	285
Other current liabilities	(20)		(21)
Other non-current liabilities	(290)		(213)
Funded status	$	(26)	$	51
Recognized in Accumulated other comprehensive loss:
Net actuarial losses	$	994	$	869
Prior service credit	(21)		(25)
Total	$	973	$	844

Schedule Of Accumulated And Projected Benefit Obligation In Excess Of Fair Value Of Plan Assets

Additional information related to pension plan was as follows:

	December 31,
Dollars in millions	2023		2022
Pension plans with projected benefit obligations in excess of plan assets:
Projected benefit obligation	$	1,045	$	728
Fair value of plan assets	735		495
Pension plans with accumulated benefit obligations in excess of plan assets:
Accumulated benefit obligation	1,017		728
Fair value of plan assets	734		495

Schedule Of Defined Benefit Actuarial Assumptions Benefit Obligations

Weighted-average assumptions used to determine defined benefit pension plan obligations were as follows:

	December 31,
	2023		2022
Discount rate	3.4	%	4.0	%
Rate of compensation increase	1.4	%	1.2	%
Interest crediting rate	2.5	%	2.5	%

Schedule Of Defined Benefit Actuarial Assumptions Net Periodic Benefit Cost

Weighted-average actuarial assumptions used to determine defined benefit pension plan net periodic benefit cost were as follows:

	Year Ended December 31,
	2023		2022		2021
Discount rate	4.0	%	1.6	%	1.2	%
Expected long-term return on plan assets	4.1	%	3.6	%	3.6	%
Rate of compensation increase	1.2	%	1.0	%	1.3	%
Interest crediting rate	2.5	%	2.1	%	2.2	%

Fair Value of Pension Plan Assets by Asset Category

The fair value of pension plan assets by asset category was as follows:

	December 31, 2023								December 31, 2022
Dollars in millions	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Plan Assets
Equity securities	$	1	$	—	$	—	$	1	$	1	$	—	$	—	$	1
Equity funds	—		363		7		370		—		368		—		368
Fixed income funds	—		785		—		785		—		697		—		697
Corporate debt securities	—		332		—		332		—		376		—		376
U.S. Treasury and agency securities	—		58		—		58		—		75		—		75
Insurance contracts	—		—		224		224		—		—		123		123
Cash and cash equivalents	32		—		—		32		43		—		—		43
Other	—		18		38		56		—		15		35		50
Plan assets subject to leveling	$	33	$	1,556	$	269	$	1,858	$	44	$	1,531	$	158	$	1,733
Plan assets measured at NAV as a practical expedient							354								294
Net plan assets							$	2,212							$	2,027