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Share-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2021
Share-based Payment Arrangement [Abstract]  
Summary of stock option activity
A summary of stock option activity is as follows:
Shares
(In thousands)
Weighted-Average Exercise PriceWeighted-Average Remaining Contractual Term (Years)Aggregate Intrinsic Value (In millions)
Stock options outstanding - December 31, 202014,689 $50.82 
Granted140 110.41 
Forfeited(59)107.83 
Exercised(3,510)36.45 
Stock options outstanding - September 30, 202111,260 $55.75 4.41$600 
Stock options exercisable - September 30, 20219,692 $47.71 3.78$591 
Summary of restricted stock and performance activity
A summary of restricted stock unit, restricted stock award and performance share unit activity is as follows:
Restricted Stock Units and AwardsPerformance Share Units
Shares
(In thousands)
Weighted-Average Grant Date Fair ValueShares
(In thousands)
Weighted-Average Grant Date Fair Value
Units - December 31, 2020
4,797 $98.29 1,821 $95.20 
Granted2,410 104.92 255 108.68 
Forfeited(279)104.25 (92)97.58 
Vested(2,302)98.94 (526)92.72 
Units - September 30, 2021
4,626 $100.96 1,458 $96.22