Financial Instruments (Schedule of the Fair Value of Assets and Liabilities Related to Derivatives Designated as Hedging Instruments) (Details) - USD ($) $ in Millions	Jun. 30, 2020	Jun. 30, 2019
Derivatives, Fair Value [Line Items]
Total assets	$ 74	$ 64
Total liabilities	21	11
Designated as Hedging Instrument | Cash Flow Hedging | Foreign Currency Contracts | Prepaid Expenses and Other
Derivatives, Fair Value [Line Items]
Total assets	0	6
Designated as Hedging Instrument | Cash Flow Hedging | Foreign Currency Contracts | Other Accrued Liabilities
Derivatives, Fair Value [Line Items]
Total liabilities	4	2
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swaps | Deferred Income Taxes and Other Liabilities
Derivatives, Fair Value [Line Items]
Total liabilities	16	0
Designated as Hedging Instrument | Cash Flow Hedging | Commodity Contracts | Other Accrued Liabilities
Derivatives, Fair Value [Line Items]
Total liabilities	1	3
Designated as Hedging Instrument | Fair Value Hedging | Interest Rate Swaps | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Total assets	27	46
Designated as Hedging Instrument | Fair Value Hedging | Interest Rate Swaps | Deferred Income Taxes and Other Liabilities
Derivatives, Fair Value [Line Items]
Total liabilities	0	6
Designated as Hedging Instrument | Fair Value Hedging | Cross Currency Interest Rate Contract [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Total assets	$ 47	$ 12