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Fair Value Measurement (Tables)
6 Months Ended
Jun. 30, 2026
Fair Value Disclosures [Abstract]  
Schedule of Financial Assets Measured at Fair Value on a Recurring Basis
The following table summarizes our financial assets and financial liabilities that are measured at fair value on a recurring basis:
(in millions)
ClassificationMeasurement LevelJune 30, 2026December 31, 2025
Financial assets
Money market trustCash and cash equivalentsLevel 1$2,514 $2,262 
Money market fundCash and cash equivalentsLevel 1$621 $548 
Money market trustRestricted cashLevel 1$91 $90