Company Restructuring (Tables)

6 Months Ended

Jun. 30, 2020

Restructuring and Related Activities [Abstract]

Schedule of changes in the restructuring liability

Restructuring activity during the period
($ in millions)	Employee costs			Exit costs			Total liability
Restructuring liability as of December 31, 2019	$	14		$	8		$	22
Expense incurred	17			2			19
Payments	(6		)	(2		)	(8		)
Restructuring liability as of June 30, 2020	$	25		$	8		$	33