RETIREMENT BENEFITS (Tables)

12 Months Ended

Dec. 31, 2024

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	2024		2023
Benefit obligations at beginning of year	$	2,238	$	1,976
Service cost—benefits earned during the year	33		29
Interest cost	74		80
Settlements and curtailments	(247)		(41)
Actuarial (gains)/losses	(10)		165
Benefits paid	(58)		(65)
Foreign currency and other	(85)		94
Benefit obligations at end of year	$	1,945	$	2,238
Fair value of plan assets at beginning of year	$	2,212	$	2,027
Actual return on plan assets	31		130
Employer contributions	71		56
Settlements	(247)		(38)
Benefits paid	(58)		(65)
Foreign currency and other	(82)		102
Fair value of plan assets at end of year	$	1,927	$	2,212
Funded status	$	(18)	$	(26)
Assets/(liabilities) recognized:
Other non-current assets	$	234	$	284
Other current liabilities	(21)		(20)
Other non-current liabilities	(231)		(290)
Funded status	$	(18)	$	(26)
Recognized in Accumulated other comprehensive loss:
Net actuarial losses	$	924	$	994
Prior service credit	(27)		(21)
Total	$	897	$	973

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	2024		2023
Pension plans with projected benefit obligations in excess of plan assets:
Projected benefit obligation	$	605	$	1,045
Fair value of plan assets	353		735
Pension plans with accumulated benefit obligations in excess of plan assets:
Accumulated benefit obligation	578		1,017
Fair value of plan assets	353		734

Schedule of Defined Benefit Actuarial Assumptions, Benefit Obligations

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

	December 31,
	2024		2023
Discount rate	3.5	%	3.4	%
Rate of compensation increase	1.4	%	1.4	%
Interest crediting rate	2.4	%	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,
	2024		2023		2022
Discount rate	3.4	%	4.0	%	1.6	%
Expected long-term return on plan assets	4.8	%	4.1	%	3.6	%
Rate of compensation increase	1.4	%	1.2	%	1.0	%
Interest crediting rate	2.5	%	2.5	%	2.1	%

Fair Value of Pension Plan Assets by Asset Category

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

	December 31, 2024								December 31, 2023
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	—		256		—		256		—		363		7		370
Fixed income funds	—		446		—		446		—		785		—		785
Corporate debt securities	—		—		—		—		—		332		—		332
U.S. Treasury and agency securities	—		41		—		41		—		58		—		58
Insurance contracts	—				708		708		—		—		224		224
Cash and cash equivalents	57		—		—		57		32		—		—		32
Other	—		11				11		—		18		38		56
Plan assets subject to leveling	$	58	$	754	$	708	$	1,520	$	33	$	1,556	$	269	$	1,858
Plan assets measured at NAV as a practical expedient							407								354
Net plan assets							$	1,927							$	2,212