v3.26.1
Fair Value Measurements - Summary of Fair Values of Outstanding Foreign Currency Derivatives (Details) - Foreign Exchange Contract [Member] - USD ($)
$ in Millions
Jun. 30, 2026
Sep. 30, 2025
Accounts Receivable [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Foreign currency derivative assets [1] $ 0 $ 0
Notional contract values 10 44
Accrued Expenses and Other Liabilities [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Foreign currency derivative liabilities 3 1
Notional contract values $ 228 $ 128
[1] Zero denotes less than $1 million of activity.