Impairment and Litigation Charges (Tables)

9 Months Ended

Oct. 29, 2016

Impairment and Litigation Charges [Abstract]

Schedule of Impairment and Litigation Charges

	Thirteen weeks ended					Thirty-nine weeks ended
		October 29,		October 31,		October 29,		October 31,
		2016		2015		2016		2015
		($ in millions)
Impairment of long-lived assets		$	6	$	—	$	6	$	—
Pension litigation charge			—		100		—		100
Total impairment and litigation charges		$	6	$	100	$	6	$	100