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EMPLOYEE STOCK BENEFIT PLANS Employee Stock Benefit Plans (Notes)
 6 Months Ended
Jun. 30, 2022
Share-Based Payment Arrangement [Abstract]  
Employee Stock Benefit Plans EMPLOYEE STOCK BENEFIT PLANS
Stock-based compensation expense was as follows:
 Three Months Ended June 30,Six Months Ended June 30,
Dollars in Millions2022202120222021
Cost of products sold$11 $15 $19 $30 
Marketing, selling and administrative48 65 96 125 
Research and development57 74 108 144 
Other (income)/expense, net— 3 — 9 
Total stock-based compensation expense$116 $157 $223 $308 
Income tax benefit(a)
$22 $33 $44 $64 
(a)    Income tax benefit excludes excess tax benefits from share-based compensation awards that were vested or exercised of $19 million and $59 million for the three and six months ended June 30, 2022 and $12 million and $29 million for the three and six months ended June 30, 2021, respectively.

The number of units granted and the weighted-average fair value on the grant date for the six months ended June 30, 2022 were as follows:
Units in MillionsUnitsWeighted-Average Fair Value
Restricted stock units8.0 $63.81 
Market share units1.0 60.74 
Performance share units1.4 66.76 
Dollars in MillionsStock OptionsRestricted Stock UnitsMarket Share UnitsPerformance Share Units
Unrecognized compensation cost$1 $919 $76 $132 
Expected weighted-average period in years of compensation cost to be recognized0.33.13.22.0