EMPLOYEE STOCK BENEFIT PLANS (Tables)

12 Months Ended

Dec. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]

Other information related to stock-based compensation benefits are as follows:

	Year Ended December 31,
Dollars in Millions	2018		2017		2016
Restricted stock units	$	102	$	95	$	89
Market share units	38		35		37
Performance share units	81		69		79
Total stock-based compensation expense	$	221	$	199	$	205
Income tax benefit	$	41	$	59	$	69

Share-based Compensation, Activity [Table Text Block]

	Stock Options				Restricted Stock Units				Market Share Units				Performance Share Units
	Number of Options Outstanding		Weighted- Average Exercise Price of Shares		Number of Nonvested Awards		Weighted- Average Grant-Date Fair Value		Number of Nonvested Awards		Weighted- Average Grant-Date Fair Value		Number of Nonvested Awards		Weighted- Average Grant-Date Fair Value
Shares in Millions
Balance at January 1, 2018	3.8		$	19.04	4.9		$	56.85	1.5		$	62.25	3.5		$	62.57
Granted	—		—		2.4		61.40		0.7		72.33		1.1		67.60
Released/Exercised	(2.1	)	20.22		(1.7	)	56.95		(0.6	)	61.70		(1.6	)	64.84
Adjustments for actual payout	—		—		—		—		0.1		59.29		0.1		64.84
Forfeited/Canceled	—		—		(0.6	)	58.85		(0.2	)	66.08		(0.3	)	63.12
Balance at December 31, 2018	1.7		17.51		5.0		58.83		1.5		66.76		2.8		63.28
Vested or expected to vest	1.7		17.51		4.4		58.85		1.3		66.67		3.3		63.10

Schedule of Unrecognized Compensation Cost, Nonvested Awards [Table Text Block]

	Restricted		Market		Performance
Dollars in Millions	Stock Units		Share Units		Share Units
Unrecognized compensation cost	$	212	$	43	$	85
Expected weighted-average period in years of compensation cost to be recognized	2.7		2.7		1.7

Schedule Of Share Based Compensation Additional Information [Table Text Block]

Amounts in Millions, except per share data	2018		2017		2016
Weighted-average grant date fair value (per share):
Restricted stock units	$	61.40	$	54.39	$	60.56
Market share units	72.33		60.14		65.26
Performance share units	67.60		57.91		64.87
Fair value of awards that vested:
Restricted stock units	$	98	$	91	$	81
Market share units	40		33		50
Performance share units	103		84		93
Total intrinsic value of stock options exercised	$	89	$	84	$	158

Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block]

The following table summarizes significant outstanding and exercisable options at December 31, 2018:

	Number Outstanding and Exercisable (in millions)	Weighted-Average Remaining Contractual Life (in years)	Weighted-Average Exercise Price  Per Share		Aggregate Intrinsic Value (in millions)
Options Outstanding and Exercisable	1.7	0.2	$	17.51	$	57