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STOCK-BASED COMPENSATION PLANS (Tables) | 12 Months Ended
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Dec. 31, 2019
Share-based Payment Arrangement [Abstract] |
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block] | The table below summarizes the components of total stock-based compensation (in millions):
| 2019 |  | 2018 |  | 2017
Stock options | $ | 3 |  |  | $ | 3 |  |  | $ | 3 |
Stock awards | 21 |  |  | 23 |  |  | 24 |
Deferred stock awards | 1 |  |  | 1 |  |  | 1 |
Employee stock purchase plan | 11 |  |  | 9 |  |  | 6 |
Stock-based compensation | $ | 36 |  |  | $ | 36 |  |  | $ | 34 |
Tax benefit related to stock-based compensation | $ | 9 |  |  | $ | 9 |  |  | $ | 13 |
Schedule of Unrecognized Compensation Cost, Nonvested Awards [Table Text Block] | Unrecognized stock-based compensation for non-vested options and awards and the weighted-average period the expense will be recognized (in millions):
| Amount |  | Weighted-Average Period |
Stock options | $ | 4 |  |  | 1.3
Stock awards | 20 |  |  | 1.5
Unrecognized stock-based compensation | $ | 24 |  |  | 1.5
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] | The fair value of each option grant was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions used for grants:
| 2019 |  | 2018 |  | 2017
Expected volatility | 30 | % |  | 30 | % |  | 51 | %
Expected term | 6 years |  | 6 years |  | 6 years
Risk-free interest rate | 2.41 | % |  | 2.61 | % |  | 2.04 | %
Expected dividend yield | 2.09 | % |  | 1.94 | % |  | 1.10 | %
Weighted-average grant date fair value per share | $ | 16.84 |  |  | $ | 17.18 |  |  | $ | 41.19 |
Estimated fair value of options granted (millions) | $ | 4 |  |  | $ | 1 |  |  | $ | 4 |
Share-based Compensation, Stock Options, Activity [Table Text Block] | The tables below summarize stock option activity for the year ended December 31, 2019:
| Shares |  | Weighted- Average Exercise Price Per Share |  | Weighted- Average Contractual Life (Years) |  | Aggregate Intrinsic Value (in millions)
Outstanding, December 31, 2018 | 573,242 |  |  | $ | 57.78 |  |  | 6.6 |  | $ | 6 |
Granted | 252,200 |  |  | 66.52 |  |  |  |  |
Exercised | (21,322) |  |  | 36.14 |  |  |  |  |
Canceled | (5,366) |  |  | 68.94 |  |  |  |  |
Forfeited or expired | (4,699) |  |  | 70.98 |  |  |  |  |
Outstanding, December 31, 2019 | 794,055 |  |  | $ | 60.98 |  |  | 6.5 |  | $ | 7 |
Exercisable, December 31, 2019 | 341,322 |  |  | $ | 50.50 |  |  | 4.3 |  | $ | 7 |
Vested or expected to vest, December 31, 2019 | 793,684 |  |  | $ | 60.98 |  |  | 6.5 |  | $ | 7 |
(in millions) | 2019 |  | 2018 |  | 2017
Intrinsic value of option exercises | $ | 1 |  |  | $ | 1 |  |  | $ | 6 |
Cash received from stock option exercises | 1 |  |  | 1 |  |  | 3 |
Tax benefit related to stock option exercises | — |  |  | — |  |  | 2 |
Fair value of options vested | 3 |  |  | 2 |  |  | 3 |
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] | The following table summarizes information about outstanding stock awards:
| Number of Units |  | Weighted-Average Grant Date Fair Value |  | Weighted- Average Contractual Life (Years) |  | Aggregate Intrinsic Value (in millions)
Non-vested, December 31, 2018 | 511,813 |  |  | $ | 78.75 |  |  | 1.5 |  | $ | 31 |
Granted | 402,816 |  |  | 66.35 |  |  |  |  |  |
Vested | (270,802) |  |  | 74.61 |  |  |  |  |  |
Forfeited | (102,214) |  |  | 75.21 |  |  |  |  |  |
Non-vested, December 31, 2019 | 541,613 |  |  | $ | 71.82 |  |  | 1.4 |  | $ | 37 |

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