PENSION AND POSTRETIREMENT BENEFIT PLANS (Tables)

12 Months Ended

Dec. 31, 2018

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

The net periodic benefit cost/(credit) of defined benefit pension plans includes:

Dollars in Millions	2018			2017			2016
Service cost — benefits earned during the year	$	26		$	25		$	24
Interest cost on projected benefit obligation	193			188			192
Expected return on plan assets	(386		)	(411		)	(418		)
Amortization of prior service credits	(4		)	(4		)	(3		)
Amortization of net actuarial loss	74			82			84
Settlements and curtailments	121			159			91
Special termination benefits	—			3			1
Net periodic benefit cost/(credit)	$	24		$	42		$	(29	)

Schedule Of Defined Benefit Obligations And Assets [Table Text Block]

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

Dollars in Millions	2018			2017
Benefit obligations at beginning of year	$	6,749		$	6,440
Service cost—benefits earned during the year	26			25
Interest cost	193			188
Settlements and Curtailments	(278		)	(330		)
Actuarial (gains)/losses	(523		)	368
Benefits paid	(123		)	(121		)
Foreign currency and other	(78		)	179
Benefit obligations at end of year	$	5,966		$	6,749
Fair value of plan assets at beginning of year	$	6,749		$	5,831
Actual return on plan assets	(203		)	804
Employer contributions	71			396
Settlements	(276		)	(330		)
Benefits paid	(123		)	(121		)
Foreign currency and other	(89		)	169
Fair value of plan assets at end of year	$	6,129		$	6,749
Funded status	$	163		$	—
Assets/(Liabilities) recognized:
Other assets	$	622		$	487
Accrued liabilities	(32		)	(31		)
Pension and other liabilities	(427		)	(456		)
Funded status	$	163		$	—
Recognized in Accumulated other comprehensive loss:
Net actuarial losses	$	2,717		$	2,849
Prior service credit	(30		)	(36		)
Total	$	2,687		$	2,813

Schedule Of Accumulated And Projected Benefit Obligation In Excess Of Fair Value Of Plan Assets [Table Text Block]

Additional information related to pension plans was as follows:

Dollars in Millions	2018		2017
Pension plans with projected benefit obligations in excess of plan assets:
Projected benefit obligation	$	1,275	$	1,166
Fair value of plan assets	817		678
Pension plans with accumulated benefit obligations in excess of plan assets:
Accumulated benefit obligation	$	1,181	$	1,008
Fair value of plan assets	757		550

Schedule Of Defined Benefit Actuarial Assumptions Benefit Obligations [Table Text Block]

Weighted-average assumptions used to determine defined benefit pension plan obligations at December 31 were as follows:

	2018		2017
Discount rate	3.5	%	3.1	%
Rate of compensation increase	0.5	%	0.5	%

Schedule Of Defined Benefit Actuarial Assumptions Net Periodic Benefit Cost [Table Text Block]

Weighted-average actuarial assumptions used to determine defined benefit pension plan net periodic benefit cost/(credit) for the years ended December 31 were as follows:

	2018		2017		2016
Discount rate	3.1	%	3.5	%	3.8	%
Expected long-term return on plan assets	6.2	%	7.0	%	7.2	%
Rate of compensation increase	0.5	%	0.5	%	0.5	%

Schedule Of Defined Benefit Historical Long Term Actual Returns [Table Text Block]

Historical long-term actual annualized returns for U.S. pension plans were as follows:

	2018		2017		2016
10 years	10.4	%	6.8	%	6.1	%
15 years	7.8	%	9.3	%	7.1	%
20 years	7.1	%	7.5	%	7.7	%

Schedule Of Allocation Of Plan Assets [Table Text Block]

The fair value of pension and postretirement plan assets by asset category at December 31, 2018 and 2017 was as follows:

	December 31, 2018								December 31, 2017
Dollars in Millions	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Plan Assets
Equity securities	$	124	$	—	$	—	$	124	$	799	$	—	$	—	$	799
Equity funds	2		475		—		477		160		1,358		—		1,518
Fixed income funds	—		606		—		606		—		724		—		724
Corporate debt securities	—		3,865		—		3,865		—		1,919		—		1,919
U.S. Treasury and agency securities	—		553		—		553		—		729		—		729
Short-term investment funds	—		55		—		55		—		135		—		135
Insurance contracts	—		—		134		134		—		—		138		138
Cash and cash equivalents	311		—		—		311		214		—		—		214
Other	—		105		19		124		—		92		13		105
Plan assets subject to leveling	$	437	$	5,659	$	153	$	6,249	$	1,173	$	4,957	$	151	$	6,281
Plan assets measured at NAV as a practical expedient
Equity funds							$	—							$	488
Venture capital and limited partnerships							121								154
Other							91								191
Total plan assets measured at NAV as a practical expedient							212								833
Net plan assets							$	6,461							$	7,114