Share-Based Compensation (Tables)

3 Months Ended

Apr. 30, 2016

Share-Based Compensation [Abstract]

Total Compensation Expense and the Related Tax Benefits Recognized

	Thirteen weeks ended
	April 30,		May 2,
	2016		2015
	($ in millions)
Options and shares purchased under the employee stock purchase plan	$	3	$	3
Restricted stock and restricted stock units		2		3
Total share-based compensation expense	$	5	$	6
Tax benefit recognized	$	1	$	2
Excess income tax benefit from settled equity-classified share-based awards reported as a cash flow from financing activities	$	6	$	14

Assumptions used to Compute Share-Based Compensation Expense

		Stock Option Plans						Stock Purchase Plan
		April 30,			May 2,			April 30,			May 2,
		2016			2015			2016			2015
Weighted-average risk free rate of interest		1.4	%		1.5	%		0.3	%		0.1	%
Expected volatility		30	%		30	%		25	%		23	%
Weighted-average expected award life (in years)		5.7			6.0			1.0			1.0
Dividend yield		1.7	%		1.6	%		1.6	%		1.8	%
Weighted-average fair value	$	15.78		$	16.01		$	11.12		$	8.03

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	465				63.79
Exercised	(324)				22.16
Expired or cancelled	(18)				52.96
Options outstanding at April 30, 2016	3,817		5.9	$	37.21
Options exercisable at April 30, 2016	2,713		4.6	$	27.86
Options vested and expected to vest at April 30, 2016	3,767		5.9	$	36.89
Options available for future grant at April 30, 2016	12,050

Total Intrinsic Value of Options Exercised

	Thirteen weeks ended
	April 30,		May 2,
	2016		2015
	($ in millions)
Exercised	$	14	$	36

Aggregate Intrinsic Value for Stock Options Outstanding and Exercisable

	Thirteen weeks ended
	April 30,		May 2,
	2016		2015
	($ in millions)
Outstanding	$	94	$	153
Outstanding and exercisable	$	91	$	137
Vested and expected to vest	$	94	$	153

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	746	2.4	$	12.95	746	$	12.95
$18.80 to $30.92	996	3.7		22.73	996		22.73
$34.12 to $56.35	954	7.1		41.08	745		39.26
$62.02 to $73.21	1,121	9.2		62.92	226		62.11
	3,817	5.9	$	37.21	2,713	$	27.86

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		339			64.24
Vested		(193)			35.36
Expired or cancelled		(122)			38.87
Nonvested at April 30, 2016		827	1.7	$	56.23
Aggregate value ($ in millions)	$	47