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Stock Based Compensation (Tables) | 12 Months Ended
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Feb. 02, 2019
Components of Stock Based Compensation Expense | Stock-based compensation expense included the following components:
| 2018 |  | 2017 |  | 2016
| (millions)
Stock options | $ | 24 |  |  | $ | 34 |  |  | $ | 43 |
Restricted stock units | 39 |  |  | 24 |  |  | 18 |
| $ | 63 |  |  | $ | 58 |  |  | $ | 61 |
Weighted Average Assumption Used To Estimate Fair Value of Stock Options | The fair value of stock options granted during 2018, 2017 and 2016 and the weighted average assumptions used to estimate the fair value are as follows:
| 2018 |  | 2017 |  | 2016
Weighted average grant date fair value of stock options granted during the period | $ | 7.43 |  |  | $ | 5.84 |  |  | $ | 12.14 |
Dividend yield | 5.2 | % |  | 6.2 | % |  | 3.8 | %
Expected volatility | 41.1 | % |  | 41.8 | % |  | 42.7 | %
Risk-free interest rate | 2.7 | % |  | 1.9 | % |  | 1.4 | %
Expected life | 5.6 years |  |  | 5.7 years |  |  | 5.7 years |
Schedule of Stock Option Activity | Activity related to stock options for 2018 is as follows:
| Shares |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life |  | Aggregate Intrinsic Value
| (thousands) |  |  |  | (years) |  | (millions)
Outstanding, beginning of period | 20,376 |  |  | $ | 38.80 |  |  |  |  |
Granted | 1,495 |  |  | 29.53 |  |  |  |  |
Canceled or forfeited | (794 | ) |  | 47.93 |  |  |  |  |
Exercised | (2,184 | ) |  | 21.02 |  |  |  |  |
Outstanding, end of period | 18,893 |  |  | $ | 39.73 |  |  |  |  |
Exercisable, end of period | 12,960 |  |  | $ | 41.93 |  |  | 4.5 |  | $ | 18 |
Options expected to vest | 4,937 |  |  | $ | 34.37 |  |  | 8.0 |  | $ | 3 |
Additional Information Relating to Stock Options | Additional information relating to stock options is as follows:
| 2018 |  | 2017 |  | 2016
| (millions)
Intrinsic value of options exercised | $ | 27 |  |  | $ | 3 |  |  | $ | 12 |
Cash received from stock options exercised | 45 |  |  | 6 |  |  | 35 |
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 2018, 2017 and 2016 are as follows:
| 2018 |  | 2017 |  | 2016
Restricted stock units (performance-based) | $ | 30.64 |  |  | $ | 27.16 |  |  | $ | 43.72 |
Restricted stock units (time-based) | 25.57 |  |  | 20.75 |  |  | 35.61 |
Schedule of Nonvested Restricted Stock Units Activity | Activity related to restricted stock units for 2018 is as follows:
| Shares |  | Weighted Average Grant Date Fair Value
| (thousands) |  |
Nonvested, beginning of period | 3,157 |  |  | $ | 30.51 |
Granted – performance-based | 749 |  |  | 30.64 |
Performance adjustment | (455 | ) |  | 43.72 |
Granted – time-based | 1,427 |  |  | 25.57 |
Forfeited | (203 | ) |  | 25.94 |
Vested | (532 | ) |  | 40.43 |
Nonvested, end of period | 4,143 |  |  | $ | 26.33 |

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