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Share-Based Payments (Tables)
3 Months Ended
Mar. 31, 2023
Share-Based Payment Arrangement [Abstract]  
Schedule of Stock Option Activity
Stock option activity is as follows:

 Number of shares (in thousands)Weighted-average
exercise price per stock option
Weighted-average
remaining
contractual term (in years)
Aggregate
intrinsic value (in millions)
Outstanding stock options at December 31, 20227,861 $58.85 
Granted— — 
Exercised(262)51.98 
Forfeited(89)88.68 
Expired(25)77.01 
Outstanding stock options at March 31, 20237,485 $58.68 5.57$206 
Vested and expected to vest at March 31, 20237,415 $58.41 5.55$206 
Exercisable at March 31, 20236,656 $55.41 5.30$203 
Schedule of Restricted Stock Units Activity
The following table summarizes our RSU activity with performance-based RSUs, including those with market conditions, presented at 100% of the target level shares that may potentially vest (amounts in thousands, except per share data):

 Number of sharesWeighted-
average grant
date fair value per RSU
Unvested RSUs at December 31, 202213,754 $74.53 
Granted1,667 78.73 
Vested(2,796)77.40 
Forfeited(394)78.39 
Unvested RSUs at March 31, 202312,231 $74.33