Share-Based Compensation (Tables)

6 Months Ended

Jul. 30, 2016

Share-Based Compensation [Abstract]

Total Compensation Expense and the Related Tax Benefits Recognized

	Thirteen weeks ended				Twenty-six weeks ended
	July 30,		August 1,		July 30,		August 1,
	2016		2015		2016		2015
	($ in millions)
Options and shares purchased under the employee stock purchase plan	$	2	$	3	$	5	$	6
Restricted stock and restricted stock units		4		2		6		5
Total share-based compensation expense	$	6	$	5	$	11	$	11
Tax benefit recognized	$	2	$	1	$	3	$	3
Excess income tax benefit from settled equity-classified share-based awards reported as a cash flow from financing activities					$	10	$	24

Assumptions used to Compute Share-Based Compensation Expense

		Stock Option Plans						Stock Purchase Plan
		July 30,			August 1,			July 30,			August 1,
		2016			2015			2016			2015
Weighted-average risk free rate of interest		1.4	%		1.5	%		0.4	%		0.2	%
Expected volatility		30	%		30	%		26	%		24	%
Weighted-average expected award life (in years)		5.7			6.0			1.0			1.0
Dividend yield		1.7	%		1.6	%		1.7	%		1.7	%
Weighted-average fair value	$	15.68		$	16.01		$	15.19		$	9.53

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	3,694			$	32.62
Granted	482				63.47
Exercised	(669)				21.56
Expired or cancelled	(54)				59.03
Options outstanding at July 30, 2016	3,453		5.7	$	38.65
Options exercisable at July 30, 2016	2,420		4.3	$	29.34
Options vested and expected to vest at July 30, 2016	3,413		5.6	$	38.38
Options available for future grant at July 30, 2016	12,006

Total Intrinsic Value of Options Exercised

	Thirteen weeks ended				Twenty-six weeks ended
	July 30,		August 1,		July 30,		August 1,
	2016		2015		2016		2015
	($ in millions)
Exercised	$	12	$	29	$	26	$	65

Aggregate Intrinsic Value for Stock Options Outstanding and Exercisable

	Twenty-six weeks ended
	July 30,		August 1,
	2016		2015
	($ in millions)
Outstanding	$	76	$	173
Outstanding and exercisable	$	74	$	152
Vested and expected to vest	$	76	$	172

Information about Stock Options Outstanding and Exercisable

	Options Outstanding				Options Exercisable
		Weighted-
		Average		Weighted-			Weighted-
		Remaining		Average			Average
	Number	Contractual		Exercise	Number		Exercise
Range of Exercise Prices	Outstanding	Life		Price	Exercisable		Price
	(in thousands, except prices per share and contractual life)
$9.85 to $15.10	721	2.1	$	12.99	721	$	12.99
$18.80 to $30.92	710	3.6		23.76	710		23.76
$34.12 to $56.35	936	6.4		41.54	739		39.53
$62.02 to $73.21	1,086	8.7		62.92	250		62.15
	3,453	5.7	$	38.65	2,420	$	29.34

Restricted Share and Unit Activity

			Weighted-
			Average
		Number	Remaining	Weighted-Average
		of	Contractual	Grant Date
		Shares	Life	Fair Value
		(in thousands)	(in years)		(per share)
Nonvested at beginning of year		803		$	45.19
Granted		361			63.74
Vested		(212)			36.54
Expired or cancelled		(125)			39.28
Nonvested at July 30, 2016		827	1.5	$	56.39
Aggregate value ($ in millions)	$	47