Company Restructuring (Tables)

9 Months Ended

Sep. 30, 2016

Restructuring and Related Activities [Abstract]

Schedule of changes in the restructuring liability

The following table presents changes in the restructuring liability during the nine months ended September 30, 2016.

($ in millions)	Employee costs			Exit costs			Total liability
Balance as of December 31, 2015	$	1		$	1		$	2
Expense incurred	7			1			8
Adjustments to liability	—			—			—
Payments applied against liability	(7		)	(1		)	(8		)
Balance as of September 30, 2016	$	1		$	1		$	2