Company Restructuring (Tables)

6 Months Ended

Jun. 30, 2015

Restructuring and Related Activities [Abstract]

Schedule of changes in the restructuring liability

The following table presents changes in the restructuring liability during the six months ended June 30, 2015.

($ in millions)	Employee costs			Exit costs		Total liability
Balance as of December 31, 2014	$	3		$	1	$	4
Expense incurred	14			—		14
Adjustments to liability	—			—		—
Payments applied against liability	(1		)	—		(1		)
Balance as of June 30, 2015	$	16		$	1	$	17