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STOCK INCENTIVE PLANS (Details) - USD ($) shares in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares of common stock available for grant under stock incentive plans (in shares) | 2.1 |  |
Pretax stock-based compensation expense | $ 42 | $ 46 | $ 40
Income tax benefits recognized in earnings for stock-based compensation expense | 21 | 16 | 12
RSU expense | 30 | $ 32 | $ 27
Unrecognized compensation | $ 46 |  |
Restricted Stock Units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Weighted average period to recognize (in years) | 2 years 1 month 6 days |  |
Maximum | Restricted Stock Units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Award vesting period | 7 years |  |
Minimum | Restricted Stock Units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Award vesting period | 1 year |  |

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