v3.26.1
Cash, Cash Equivalents and Restricted Cash, Investments and Fair Value Measurements - Schedule of Financial Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Fair value measurements    
Cash and cash equivalents $ 1,065 $ 1,476
Investment securities 78 66
Total 1,143 1,542
Cash    
Fair value measurements    
Cash and cash equivalents 428 617
Cash equivalents    
Fair value measurements    
Cash and cash equivalents 637 859
Level 1    
Fair value measurements    
Cash and cash equivalents 1,065 1,476
Investment securities 0 0
Total 1,065 1,476
Level 1 | Cash    
Fair value measurements    
Cash and cash equivalents 428 617
Level 1 | Cash equivalents    
Fair value measurements    
Cash and cash equivalents 637 859
Level 2    
Fair value measurements    
Cash and cash equivalents 0 0
Investment securities 78 66
Total 78 66
Level 2 | Cash    
Fair value measurements    
Cash and cash equivalents 0 0
Level 2 | Cash equivalents    
Fair value measurements    
Cash and cash equivalents 0 0
Level 3    
Fair value measurements    
Cash and cash equivalents 0 0
Investment securities 0 0
Total 0 0
Level 3 | Cash    
Fair value measurements    
Cash and cash equivalents 0 0
Level 3 | Cash equivalents    
Fair value measurements    
Cash and cash equivalents $ 0 $ 0