v3.25.4
Cash, Cash Equivalents, Restricted Cash and Investments - Schedule of Cash, Cash Equivalents, Short-term Investments and Long-term Investments Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total cash and cash equivalents $ 221 $ 211
Total short-term and long-term investments 1,238 1,012
U.S. Treasury securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total short-term and long-term investments 766 728
U.S. Treasury securities | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total short-term and long-term investments 766 728
Commercial paper    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total short-term and long-term investments 39 132
Commercial paper | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total short-term and long-term investments 39 132
Corporate bonds and notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total short-term and long-term investments 433 152
Corporate bonds and notes | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total short-term and long-term investments 433 152
Bank deposits | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total cash and cash equivalents 1 1
Money market funds | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total cash and cash equivalents 220 165
U.S. Treasury securities | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total cash and cash equivalents 0 40
Commercial paper | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total cash and cash equivalents $ 0 $ 5