Share-Based Compensation (Tables)

9 Months Ended

Oct. 28, 2017

Share-Based Compensation [Abstract]

Total Compensation Expense and the Related Tax Benefits Recognized

	Thirteen weeks ended				Thirty-nine weeks ended
	October 28,		October 29,		October 28,		October 29,
	2017		2016		2017		2016
	($ in millions)
Options and shares purchased under the employee stock purchase plan	$	2	$	3	$	7	$	8
Restricted stock and restricted stock units		1		3		4		9
Total share-based compensation expense	$	3	$	6	$	11	$	17
Tax benefit recognized	$	1	$	2	$	3	$	5

Assumptions used to Compute Share-Based Compensation Expense

		Stock Option Plans						Stock Purchase Plan
		October 28,			October 29,			October 28,			October 29,
		2017			2016			2017			2016
Weighted-average risk free rate of interest		2.1	%		1.4	%		0.9	%		0.4	%
Expected volatility		25	%		30	%		29	%		27	%
Weighted-average expected award life (in years)		5.4			5.7			1.0			1.0
Dividend yield		1.9	%		1.7	%		2.0	%		1.7	%
Weighted-average fair value	$	14.74		$	15.71		$	10.84		$	14.04

Options Granted under Stock Option Plans

		Weighted-		Weighted-
	Number	Average		Average
	of	Remaining		Exercise
	Shares	Contractual Life		Price
	(in thousands)	(in years)		(per share)
Options outstanding at the beginning of the year	2,806			$	42.61
Granted	547				69.58
Exercised	(536)				21.38
Expired or cancelled	(19)				61.01
Options outstanding at October 28, 2017	2,798		6.7	$	51.82
Options exercisable at October 28, 2017	1,729		5.4	$	42.91
Options available for future grant at October 28, 2017	10,759

Total Intrinsic Value of Options Exercised

	Thirteen weeks ended				Thirty-nine weeks ended
	October 28,		October 29,		October 28,		October 29,
	2017		2016		2017		2016
	($ in millions)
Exercised	$	5	$	19	$	20	$	45

Aggregate Intrinsic Value for Stock Options Outstanding and Exercisable

	Thirty-nine weeks ended
	October 28,		October 29,
	2017		2016
	($ in millions)
Outstanding	$	5	$	78
Outstanding and exercisable	$	5	$	71
Vested and expected to vest	$	5	$	78

Information about Stock Options Outstanding and Exercisable

	Options Outstanding				Options Exercisable
		Weighted-
		Average		Weighted-			Weighted-
		Remaining		Average			Average
Range of Exercise	Number	Contractual		Exercise	Number		Exercise
Prices	Outstanding	Life		Price	Exercisable		Price
	(in thousands, except prices per share and contractual life)
$9.85 to $24.75	344	2.7	$	16.77	344	$	16.77
$30.92 to $45.75	787	5.5		38.33	747		38.50
$48.55 to $62.11	704	6.9		61.05	472		61.35
$63.79 to $73.21	963	8.8		68.60	166		64.35
	2,798	6.7	$	51.82	1,729	$	42.91

Restricted Share and Unit Activity

			Weighted-
			Average	Weighted-
		Number	Remaining	Average
		of	Contractual	Grant Date
		Shares	Life	Fair Value
		(in thousands)	(in years)		(per share)
Nonvested at beginning of year		798		$	56.91
Granted		328			63.72
Vested		(286)			49.55
Expired or cancelled		(447)			64.74
Nonvested at October 28, 2017		393	1.5	$	59.07
Aggregate value ($ in millions)	$	23