Annual report pursuant to Section 13 and 15(d)

Cash, Cash Equivalents and Investments - Amortized Cost, Unrealized Gains and Losses and Fair Value of Available-for-Sale Debt Securities (Details)

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Cash, Cash Equivalents and Investments - Amortized Cost, Unrealized Gains and Losses and Fair Value of Available-for-Sale Debt Securities (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]    
Amortized cost $ 846  
Unrealized gains 1  
Fair value 847 $ 839
U.S. Treasury securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized cost 768 841
Unrealized gains 1  
Unrealized losses   (2)
Fair value 769 $ 839
Commercial Paper    
Debt Securities, Available-for-sale [Line Items]    
Amortized cost 54  
Unrealized gains 0  
Fair value 54  
Corporate Bonds and Notes    
Debt Securities, Available-for-sale [Line Items]    
Amortized cost 24  
Unrealized gains 0  
Fair value $ 24