Share-Based Compensation (Tables)

9 Months Ended

Oct. 29, 2016

Share-Based Compensation [Abstract]

Total Compensation Expense and the Related Tax Benefits Recognized

	Thirteen weeks ended				Thirty-nine weeks ended
	October 29,		October 31,		October 29,		October 31,
	2016		2015		2016		2015
	($ in millions)
Options and shares purchased under the employee stock purchase plan	$	3	$	3	$	8	$	9
Restricted stock and restricted stock units		3		3		9		8
Total share-based compensation expense	$	6	$	6	$	17	$	17
Tax benefit recognized	$	2	$	3	$	5	$	6
Excess income tax benefit from settled equity-classified share-based awards reported as a cash flow from financing activities					$	16	$	33

Assumptions used to Compute Share-Based Compensation Expense

		Stock Option Plans						Stock Purchase Plan
		October 29,			October 31,			October 29,			October 31,
		2016			2015			2016			2015
Weighted-average risk free rate of interest		1.4	%		1.5	%		0.4	%		0.2	%
Expected volatility		30	%		30	%		27	%		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	$	15.71		$	16.07		$	14.04		$	10.20

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	500				63.60
Exercised	(1,106)				21.44
Expired or cancelled	(52)				59.38
Options outstanding at October 29, 2016	3,036		5.9	$	41.34
Options exercisable at October 29, 2016	1,990		4.4	$	31.24
Options vested and expected to vest at October 29, 2016	3,002		5.9	$	41.11
Options available for future grant at October 29, 2016	11,968

Total Intrinsic Value of Options Exercised

	Thirteen weeks ended				Thirty-nine weeks ended
	October 29,		October 31,		October 29,		October 31,
	2016		2015		2016		2015
	($ in millions)
Exercised	$	19	$	31	$	45	$	96

Aggregate Intrinsic Value for Stock Options Outstanding and Exercisable

	Thirty-nine weeks ended
	October 29,		October 31,
	2016		2015
	($ in millions)
Outstanding	$	78	$	133
Outstanding and exercisable	$	71	$	116
Vested and expected to vest	$	78	$	133

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	603	1.9	$	12.70	603	$	12.70
$18.84 to $30.92	460	4.3		25.79	460		25.79
$34.24 to $55.02	787	5.9		40.42	645		39.13
$56.35 to $73.21	1,186	8.5		62.53	282		61.74
	3,036	5.9	$	41.34	1,990	$	31.24

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		368			63.80
Vested		(219)			37.68
Expired or cancelled		(125)			39.32
Nonvested at October 29, 2016		827	1.2	$	56.34
Aggregate value ($ in millions)	$	47