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Share-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]  
Schedule of recognized share-based compensation expense
Year ended December 31 (in millions)
202420232022
Share-based compensation expense$1,069 $1,021 $1,100 
Related income tax benefit
$222 $203 $248 
Schedule of stock option and restricted share units activity
Stock Options and Restricted Share Units
As of December 31, 2024, unless otherwise stated (in millions, except per share data)Stock
Options		RSUs
Awards granted during 20244 35 
Weighted-average exercise price of awards granted during 2024$40.72  
Stock options outstanding and unvested RSUs
224 62 
Weighted-average exercise price of stock options outstanding$41.70 
Weighted-average fair value at grant date of unvested RSUs
 $42.11 
Schedule of stock option and restricted share units weighted-average fair value and significant assumptions
The table below presents the weighted-average fair value on the date of grant of RSUs and stock options awarded under our various plans and the related weighted-average valuation assumptions.
Year ended December 31202420232022
RSUs fair value$42.23 $37.14 $45.20 
Stock options fair value$9.93 $8.41 $8.77 
Stock Option Valuation Assumptions:
Dividend yield2.9 %3.2 %2.4 %
Expected volatility24.8 %26.2 %25.0 %
Risk-free interest rate4.2 %4.2 %1.8 %
Expected option life (in years)5.15.95.8