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Fair Value Measurements (Valuation Of Financial Instruments By Pricing Categories) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Assets    
Available-for-sale marketable securities: $ 91 $ 82
Total assets measured at fair value 4,977 3,378
Contingent Consideration Arrangements, Change in Amount of Contingent Consideration [Abstract]    
Total liabilities measured at fair value 788 595
(Level 1)    
Assets    
Available-for-sale marketable securities 3,652 2,971
Short-term investments 750 0
Trading marketable securities 259 209
Total assets measured at fair value 4,661 3,180
Liabilities:    
Deferred compensation arrangements 259 209
Contingent Consideration Arrangements, Change in Amount of Contingent Consideration [Abstract]    
Total liabilities measured at fair value 259 209
(Level 2)    
Assets    
Available-for-sale marketable securities: 91 82
Total assets measured at fair value 316 198
Contingent Consideration Arrangements, Change in Amount of Contingent Consideration [Abstract]    
Total liabilities measured at fair value 77 97
(Level 2) | Corporate and asset-backed debt securities    
Assets    
Available-for-sale marketable securities: 53 43
(Level 2) | United States agency debt securities    
Assets    
Available-for-sale marketable securities: 1 4
(Level 2) | United States treasury debt securities    
Assets    
Available-for-sale marketable securities: 34 31
(Level 2) | Certificates of deposit    
Assets    
Available-for-sale marketable securities: 3 4
(Level 2) | Foreign currency exchange forward contracts    
Assets    
Foreign currency exchange forward contracts 225 116
Interest rate swap asset 225 116
Liabilities:    
Foreign currency exchange forward contracts 77 97
(Level 3)    
Contingent Consideration Arrangements, Change in Amount of Contingent Consideration [Abstract]    
Beginning 289 121
Additions 208 192
Change in estimate and foreign exchange 8 (2)
Settlements (53) (22)
Ending 452 289
Total liabilities measured at fair value $ 452 $ 289