v3.25.2
Derivative Instruments and Hedging Activities - Narrative (Details) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
Mar. 31, 2023
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Sep. 30, 2024
Derivative [Line Items]            
Net gains (losses) on derivative instruments   $ (2,000,000) $ 4,000,000 $ 9,000,000 $ 1,000,000  
Pre-tax gains (losses) associated with net investment hedges   (68,000,000) 6,000,000 (46,000,000) (9,000,000)  
Maximum amount of loss   114,000,000   114,000,000    
Cash collateral received   21,000,000 12,000,000 21,000,000 12,000,000 $ 14,000,000
Revolver | Credit Agreement            
Derivative [Line Items]            
Net gains (losses) on derivative instruments $ 32,000,000          
IRPAs            
Derivative [Line Items]            
Notional amount   0 $ 0 0 $ 0 $ 0
Pre-tax net gains associated with interest rate hedges   $ 9,000,000   $ 9,000,000    
Forward foreign currency exchange contracts            
Derivative [Line Items]            
Derivative notional amount percent of required need coverage   90.00%   90.00%    
Energy Services            
Derivative [Line Items]            
Borrowings interest rate   3.549%   3.549%