Financial Instruments (Schedule of Outstanding Instruments, Cash Flow Hedges) (Details) - USD ($) $ in Millions	Jun. 30, 2021	Jun. 30, 2020
Cash Flow Hedging
Derivative [Line Items]
Derivative Liability, Notional Amount		$ 200
Fair Value Hedging | Interest Rate Swaps
Derivative [Line Items]
Notional Amount	$ 200	550
Cash Flow Hedging | Foreign Currency Contracts
Derivative [Line Items]
Notional Amount	436	328
Cash Flow Hedging | Commodity Contracts
Derivative [Line Items]
Notional Amount		16
Cash Flow Hedging | Forward Contracts [Member]
Derivative [Line Items]
Notional Amount		$ 200
Designated as Hedging Instrument | Fair Value Hedging | Interest Rate Swaps
Derivative [Line Items]
Derivative Liability, Notional Amount	$ 200