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Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2023
Share-Based Payment Arrangement [Abstract]  
Stock-based compensation cost included in income from continuing operations The following table presents total stock-based compensation cost included in income from continuing operations.
Three Months Ended June 30,Six Months Ended June 30,
(Dollars in millions)2023202220232022
Cost$47 $43 $93 $84 
Selling, general and administrative168 153 317 289 
Research, development and engineering73 58 146 115 
Pre-tax stock-based compensation cost$288 $254 $556 $488 
Income tax benefits(75)(82)(142)(139)
Total net stock-based compensation cost$213 $172 $414 $348