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STOCK-BASED COMPENSATION (Tables)
 12 Months Ended
Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions The weighted-average assumptions used to calculate total stock-based compensation are included in the following table:
Weighted-Average Assumptions202120202019
Dividend yield4.86 %5.80 %5.10 %
Expected volatility33.40 %26.70 %26.10 %
Risk-free interest rate0.68 %1.49 %2.43 %
Expected life of stock options granted during period (years)6.256.16.1
Employee Stock Option  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share-based Compensation, Stock Options, Activity The following table summarizes stock option activity for 2021:
Stock Options 2021
Shares in thousandsShares
Exercise
Price 1
Outstanding at Jan 1, 202120,252 $47.44 
Granted1,309 $57.67 
Exercised(5,179)$39.97 
Forfeited/Expired(102)$60.36 
Outstanding at Dec 31, 202116,280 $50.56 
Remaining contractual life in years4.65
Aggregate intrinsic value in millions$141 
Exercisable at Dec 31, 202113,106 $49.96 
Remaining contractual life in years3.75
Aggregate intrinsic value in millions$128 
1.Weighted-average per share.

Additional Information about Stock Options
In millions, except per share amounts202120202019
Weighted-average fair value per share of options granted$10.37 $5.89 $7.99 
Total compensation expense for stock option plans$14 $22 $23 
Related tax benefit$3 $5 $5 
Total amount of cash received from the exercise of options$217 $108 $93 
Total intrinsic value of options exercised 1
$121 $41 $77 
Related tax benefit$27 $9 $17 
1.Difference between the market price at exercise and the price paid by the employee to exercise the options.
Restricted Stock Units (RSUs) [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Nonvested Restricted Stock Units Activity
The Company grants RSUs to certain employees and non-employee directors. The grants vest after a designated period of time, generally three years for employees and two years for non-employee directors. The following table shows changes in nonvested RSUs:

RSU Awards2021
Shares in thousandsShares
Grant Date
Fair Value 1
Nonvested at Jan 1, 20213,007 $53.78 
Granted1,715 $57.96 
Vested(1,063)$60.86 
Canceled(116)$54.17 
Nonvested at Dec 31, 20213,543 $53.67 
1.Weighted-average per share.
Schedule of Additional Information About Deferred Restricted Stock Units
Additional Information about RSUs
In millions, except per share amounts202120202019
Weighted-average fair value per share of RSUs granted$57.96 $47.66 $54.78 
Total fair value of RSUs vested 1
$33 $106 $264 
Related tax benefit$7 $24 $59 
Total compensation expense for RSU awards$95 $93 $110 
Related tax benefit$21 $21 $25 
1.Includes the fair value of shares vested in prior years and delivered in the reporting year.
Performance Stock Units (PSUs) [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value
The following table shows the PSU awards granted:

PSU Awards
Target
Shares
Granted 1
Grant Date
Fair
Value 2
Shares in thousands
YearPerformance Period
2021Jan 1, 2021 – Dec 31, 20231,223 $61.48 
2020Jan 1, 2020 – Dec 31, 20221,426 $48.35 
2019Apr 1, 2019 – Dec 31, 20211,173 $57.58 
1.At the end of the performance period, the actual number of shares issued can range from zero to 200 percent of target shares granted for the 2019 and 2021 awards and can range from zero to 100 percent of the target shares granted for the 2020 award.
2.Weighted-average per share.
Share-based Payment Arrangement, Performance Shares, Activity
The following table shows changes in nonvested PSUs:

PSUs2021
Shares in thousandsShares
Grant Date
Fair
Value 1
Nonvested at Jan 1, 20212,488 $53.78 
Granted1,223 $61.48 
Vested— $— 
Canceled(72)$56.99 
Nonvested at Dec 31, 20213,639 $55.36 
1.Weighted-average per share.
Schedule of Additional Information About Performance Deferred Stock
Additional Information about PSUs 
In millions, except share amounts202120202019
Total fair value of PSUs vested and delivered 1
$— $— $18 
Related tax benefit$— $— $4 
Total compensation expense for PSU awards $138 $56 $25 
Related tax benefit$31 $13 $6 
Shares of PSUs settled in cash (in thousands) 2
— — 162 
Total cash paid to settle PSUs 3
$— $— $13 
1.Includes the fair value of shares vested in prior years and delivered in the reporting year.
2.PSU awards vested in prior years and delivered in the reporting year.
3.Cash paid to certain executive employees for PSU awards vested in prior periods and delivered in the reporting year, equal to the value of the stock award on the date of delivery
Employee Stock Purchase Plan  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity
Additional Information about Employee Stock Purchase Plan
In millions, except per share amounts
2021
Weighted-average fair value per share of purchase rights granted$16.26 
Total compensation expense for ESPP$30 
Related tax benefit$7 
Total amount of cash received from the exercise of purchase rights$103 
Total intrinsic value of purchase rights exercised 1
$18 
Related tax benefit$4 
1.Difference between the market price at exercise and the price paid by the employee to exercise the purchase rights