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Financial Instruments (Schedule of Outstanding Instruments, Cash Flow Hedges) (Details) - USD ($)
$ in Millions
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2020
Cash Flow Hedging      
Derivative [Line Items]      
Derivative Liability, Notional Amount     $ 200
Fair Value Hedging | Interest Rate Swap      
Derivative [Line Items]      
Notional Amount $ 800 $ 200  
Cash Flow Hedging | Foreign Currency Contracts      
Derivative [Line Items]      
Notional Amount 327 436  
Designated as Hedging Instrument | Fair Value Hedging | Interest Rate Swap      
Derivative [Line Items]      
Derivative Liability, Notional Amount $ 600 $ 200