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Fair Value Measurements - Carrying and Fair Value of Long-Term Debt (Details) - USD ($)
$ in Millions
Jun. 30, 2024
Jun. 30, 2023
Oct. 31, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Total long-term debt with fixed interest rates (excluding commercial paper and finance leases) $ 5,141 $ 4,123  
Interest rate swaps      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Derivative, notional amount   1,200 $ 1,250
Level 2      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Total long-term debt with fixed interest rates (excluding commercial paper and finance leases) $ 4,973 $ 3,844