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Stock Plans - Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2024
Dec. 31, 2023
Shares Subject to Option    
Beginning balance (in shares) 18,678,120  
Options granted (in shares) 2,261,810  
Options exercised (in shares) [1] (1,866,312)  
Options canceled (in shares) (118,999)  
Ending balance (in shares) 18,954,619 18,678,120
Weighted- Average Exercise or Grant Price Per Share    
Beginning balance (in dollars per share) $ 49.96  
Options granted (in dollars per share) 73.13  
Options exercised (in dollars per share) [1] 42.39  
Options canceled (in dollars per share) 52.53  
Ending balance (in dollars per share) $ 53.46 $ 49.96
Average Remaining Contractual Term    
Average remaining contractual term 6 years 5 years
Aggregate Intrinsic Value    
Aggregate intrinsic value $ 321 $ 420
Aggregate intrinsic value options exercised [1] 59  
Cash received from options exercised 79  
Actual tax benefit realized and recorded in the provision for income taxes for the tax deductions from the option exercises $ 10  
[1] Cash received from options exercised was $79 million in the three months ended March 31, 2024. The actual tax benefit realized and recorded in the provision for income taxes for the tax deductions from the option exercises totaled $10 million in the three months ended March 31, 2024.