Company Restructuring (Tables)

9 Months Ended

Sep. 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	196			22			218
Adjustments to liability	5			(4		)	1
Payments and non-cash charges	(38		)	(24		)	(62		)
Restructuring liability as of September 30, 2020	$	177		$	2		$	179