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Share-Based Compensation (Tables)
 12 Months Ended
Feb. 02, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share-Based Compensation Expense
Share-based compensation expense is as follows:
  
 
Fiscal Year
($ in millions)
 
2018
 
2017
 
2016
Stock units
 
$
71

 
$
69

 
$
61

Stock options
 
16

 
14

 
11

Employee stock purchase plan
 
4

 
4

 
4

Share-based compensation expense
 
91

 
87

 
76

Less: Income tax benefit
 
(22
)
 
(35
)
 
(30
)
Share-based compensation expense, net of tax
 
$
69

 
$
52

 
$
46
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
The fair value of stock options issued during fiscal 2018, 2017, and 2016 was estimated on the date of grant using the following assumptions:
 
 
Fiscal Year
 
 
2018
 
2017
 
2016
Expected term (in years)
 
3.9

 
3.9

 
3.7

Expected volatility
 
36.3
%
 
38.2
%
 
33.5
%
Dividend yield
 
3.1
%
 
3.8
%
 
3.5
%
Risk-free interest rate
 
2.5
%
 
1.7
%
 
1.2
%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block]
Information about stock options outstanding and exercisable as of February 2, 2019 is as follows:
 
 
Intrinsic Value as of February 2, 2019 (in millions)
 
Number of
Shares as of
February 2, 2019
 
Weighted-
Average
Remaining
Contractual
Life (in years)
 
Weighted-
Average
Exercise Price Per Share
Options Outstanding
 
$
7

 
10,685,422

 
7.5
 
$
29.80

Options Exercisable
 
$
3

 
3,727,628

 
5.9
 
$
31.46
Stock Options [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share-based Compensation, Stock Options, Activity [Table Text Block]
A summary of stock option activity under the 2016 Plan for fiscal 2018 is as follows:
 
 
Shares
 
Weighted-
Average
Exercise Price Per Share
Balance as of February 3, 2018
 
9,142,206

 
$
28.67

Granted
 
3,585,976

 
$
32.00

Exercised
 
(794,430
)
 
$
25.91

Forfeited/Expired
 
(1,248,330
)
 
$
30.32

Balance as of February 2, 2019
 
10,685,422

 
$
29.80
Additional Information About Stock Unit Activity [Table Text Block]
A summary of additional information about stock options is as follows: 
 
 
Fiscal Year
 
 
2018
 
2017
 
2016
Weighted-average fair value per share of stock options granted
 
$
7.75

 
$
5.47

 
$
5.60

Aggregate intrinsic value of stock options exercised (in millions)
 
$
5

 
$
1

 
$
1

Fair value of stock options vested (in millions)
 
$
14

 
$
12

 
$
9
Stock Units [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share-based Compensation, Stock Options, Activity [Table Text Block]
A summary of Stock Unit activity under the 2016 Plan for fiscal 2018 is as follows:
 
 
Shares
 
Weighted-Average
Grant-Date
Fair Value Per Share
Balance as of February 3, 2018
 
6,263,501

 
$
25.21

Granted
 
5,639,143

 
$
29.33

Vested
 
(2,070,317
)
 
$
28.04

Forfeited
 
(1,747,068
)
 
$
26.98

Balance as of February 2, 2019
 
8,085,259

 
$
29.97
Additional Information About Stock Unit Activity [Table Text Block]
A summary of additional information about Stock Units is as follows:
 
 
Fiscal Year
 
 
2018
 
2017
 
2016
Weighted-average fair value per share of Stock Units granted
 
$
29.33

 
$
21.81

 
$
26.47

Fair value of Stock Units vested (in millions)
 
$
58

 
$
64

 
$
59