Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2017

Stock-Based Compensation:

Stock-based compensation cost included in income from continuing operations

	Three Months Ended September 30,						Nine Months Ended September 30,
(Dollars in millions)	2017			2016			2017			2016
Cost	$	22		$	23		$	68		$	67
Selling, general and administrative	88			105			277			295
Research, development and engineering	13			14			43			41
Pre-tax stock-based compensation cost	123			142			388			403
Income tax benefits	(41		)	(47		)	(128		)	(131		)
Total net stock-based compensation cost	$	82		$	95		$	260		$	272