v3.26.1
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
Mar. 31, 2026
Dec. 31, 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total cash and cash equivalents $ 273 $ 221
Total short-term and long-term investments 1,004 1,238
U.S. Treasury securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total short-term and long-term investments 620 766
U.S. Treasury securities | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total short-term and long-term investments 620 766
Commercial paper    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total short-term and long-term investments 7 39
Commercial paper | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total short-term and long-term investments 7 39
Corporate bonds and notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total short-term and long-term investments 377 433
Corporate bonds and notes | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total short-term and long-term investments 377 433
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 272 220
U.S. Treasury securities | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total cash and cash equivalents 0 0
Commercial paper | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total cash and cash equivalents $ 0 $ 0