Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2019

Stock-Based Compensation

Stock-based compensation cost included in income from continuing operations

($ in millions)
For the year ended December 31:	2019		2018		2017
Cost	$	100	$	82	$	91
Selling, general and administrative		453		361		384
Research, development and engineering		126		67		59
Pre-tax stock-based compensation cost		679		510		534
Income tax benefits		(155)		(116)		(131)
Net stock-based compensation cost	$	524	$	393	$	403

Summary of Restricted Stock Units activity

	RSUs			PSUs
	Weighted-Average			Weighted-Average
	Grant Price		Number of Units	Grant Price		Number of Units
Balance at January 1, 2017	$	147	8,899,092	$	155	2,874,758
Awards granted		137	3,540,949		137	824,875
Awards released		153	(3,032,531)		175	(293,236)
Awards canceled/forfeited/performance adjusted		147	(852,247)		170	(757,084)	*
Balance at December 31, 2017	$	141	8,555,263	$	144	2,649,313	**
Awards granted		121	4,806,790		130	909,140
Awards released		148	(2,579,962)		152	(666,244)
Awards canceled/forfeited/performance adjusted		139	(979,387)		147	(472,514)	*
Balance at December 31, 2018	$	130	9,802,704	$	136	2,419,695	**
Awards granted		119	5,650,861		117	1,395,534
Awards released		136	(3,145,016)		140	(846,672)
Awards canceled/forfeited/performance adjusted		128	(981,921)		131	(112,107)	*
Balance at December 31, 2019	$	123	11,326,628	$	126	2,856,450	**

*   Includes adjustments of (8,544), (328,120) and (623,245) PSUs for 2019, 2018 and 2017, respectively, because final performance metrics were above or below specified targets.

** Represents the number of shares expected to be issued based on achievement of grant date performance targets. The actual number of shares issued will depend on final performance against specified targets over the vesting period.

Summary of Performance Share Units activity

	RSUs			PSUs
	Weighted-Average			Weighted-Average
	Grant Price		Number of Units	Grant Price		Number of Units
Balance at January 1, 2017	$	147	8,899,092	$	155	2,874,758
Awards granted		137	3,540,949		137	824,875
Awards released		153	(3,032,531)		175	(293,236)
Awards canceled/forfeited/performance adjusted		147	(852,247)		170	(757,084)	*
Balance at December 31, 2017	$	141	8,555,263	$	144	2,649,313	**
Awards granted		121	4,806,790		130	909,140
Awards released		148	(2,579,962)		152	(666,244)
Awards canceled/forfeited/performance adjusted		139	(979,387)		147	(472,514)	*
Balance at December 31, 2018	$	130	9,802,704	$	136	2,419,695	**
Awards granted		119	5,650,861		117	1,395,534
Awards released		136	(3,145,016)		140	(846,672)
Awards canceled/forfeited/performance adjusted		128	(981,921)		131	(112,107)	*
Balance at December 31, 2019	$	123	11,326,628	$	126	2,856,450	**

*   Includes adjustments of (8,544), (328,120) and (623,245) PSUs for 2019, 2018 and 2017, respectively, because final performance metrics were above or below specified targets.

** Represents the number of shares expected to be issued based on achievement of grant date performance targets. The actual number of shares issued will depend on final performance against specified targets over the vesting period.

Summary of total fair value of RSUs and PSUs granted and vested

($ in millions)
For the year ended December 31:	2019		2018		2017
RSUs
Granted	$	674	$	583	$	484
Vested		428		381		463
PSUs
Granted	$	164	$	118	$	113
Vested		118		101		51