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Stock Based Compensation (Tables)
 12 Months Ended
Feb. 03, 2018
Components of Stock Based Compensation Expense
Stock-based compensation expense included the following components:
 
 
2017
 
2016
 
2015
 
(millions)
Stock options
$
34

 
$
43

 
$
52

Restricted stock units
24

 
18

 
13

 
$
58

 
$
61

 
$
65
Weighted Average Assumption Used To Estimate Fair Value of Stock Options
The fair value of stock options granted during 2017, 2016 and 2015 and the weighted average assumptions used to estimate the fair value are as follows:
 
 
2017
 
2016
 
2015
Weighted average grant date fair value of stock options
granted during the period
$
5.84

 
$
12.14

 
$
20.78

Dividend yield
6.2
%
 
3.8
%
 
2.7
%
Expected volatility
41.8
%
 
42.7
%
 
43.3
%
Risk-free interest rate
1.9
%
 
1.4
%
 
1.7
%
Expected life
5.7 years

 
5.7 years

 
5.7 years
Schedule of Stock Option Activity
Activity related to stock options for 2017 is as follows:
 
 
Shares
 
Weighted
Average
Exercise
Price
 
Weighted
Average
Remaining
Contractual
Life
 
Aggregate
Intrinsic
Value
 
(thousands)
 
 
 
(years)
 
(millions)
Outstanding, beginning of period
20,478

 
$
42.18

 
 
 
 
Granted
3,801

 
$
26.12

 
 
 
 
Canceled or forfeited
(3,586
)
 
$
46.46

 
 
 
 
Exercised
(317
)
 
$
19.09

 
 
 
 
Outstanding, end of period
20,376

 
$
38.80

 
 
 
 
Exercisable, end of period
12,810

 
$
38.38

 
4.3
 
$
23

Options expected to vest
6,305

 
$
38.57

 
8.4
 
$
4
Additional Information Relating to Stock Options
Additional information relating to stock options is as follows:
 
 
2017
 
2016
 
2015
 
(millions)
Intrinsic value of options exercised
$
3

 
$
12

 
$
127

Cash received from stock options exercised
6

 
35

 
125
Restricted Stock Units [Member]  
Activity Related to Restricted Stock and Restricted Stock Units
The weighted average grant date fair values of performance-based and time-based restricted stock units granted during 2017, 2016 and 2015 are as follows:
 
 
2017
 
2016
 
2015
Restricted stock units (performance-based)
$
27.16

 
$
43.72

 
$
61.51

Restricted stock units (time-based)
20.75

 
35.61

 
63.71
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]
Activity related to restricted stock units for 2017 is as follows:
 
 
Shares
 
Weighted
Average
Grant Date
Fair Value
 
(thousands)
 
 
Nonvested, beginning of period
1,818

 
$
49.04

Granted – performance-based
971

 
27.16

Performance adjustment
(312
)
 
61.51

Granted – time-based
1,307

 
20.75

Forfeited
(431
)
 
40.14

Vested
(196
)
 
50.32

Nonvested, end of period
3,157

 
$
30.51