Business Restructuring (Tables)

12 Months Ended

Dec. 31, 2019

Restructuring and Related Activities [Abstract]

Activity Related to Restructuring Reserves

Restructuring Reserve Activity
($ in millions)	Total Reserve
December 31, 2017		$102
Total 2018 restructuring charge	83
Additional actions approved	32
Release of prior reserves and other adjustments	(49		)
Cash payments	(66		)
Foreign currency impact	(4		)
Other	12
December 31, 2018		$110
2019 restructuring charges	194
Release of prior reserves and other adjustments	(18		)
Cash payments	(58		)
Foreign currency impact	(4		)
December 31, 2019		$224