Company Restructuring (Tables)

3 Months Ended

Mar. 31, 2016

Restructuring and Related Activities [Abstract]

Schedule of changes in the restructuring liability

The following table presents changes in the restructuring liability during the three months ended March 31, 2016.

($ in millions)	Employee costs			Exit costs			Total liability
Balance as of December 31, 2015	$	1		$	1		$	2
Expense incurred	1			—			1
Adjustments to liability	1			—			1
Payments applied against liability	(2		)	(1		)	(3		)
Balance as of March 31, 2016	$	1		$	—		$	1