FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Schedule of Assets and Liabilities for Fair Value Disclosure) (Details) - USD ($) $ in Millions	Sep. 30, 2020	Jun. 30, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 860	$ 871
Total assets	6,777	6,213
Total liabilities	5,466	5,305
Reported Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	5	1
Derivative liabilities	4	5
Total assets	811	849
Total liabilities	2,781	2,780
Estimate of Fair Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	5	1
Derivative liabilities	4	5
Total other assets in the fair value hierarchy	811	849
Total other liabilities in the fair value hierarchy	3,049	3,051
Other Current Assets [Member] | Fair Value, Inputs, Level 1 [Member] | Reported Value Measurement [Member] | Commodity Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	1	0
Other Current Assets [Member] | Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member] | Commodity Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	1	0
Other Assets [Member] | Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Interest Rate Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	4	1
Other Assets [Member] | Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Interest Rate Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	4	1
Other Assets [Member] | Trust Assets for nonqualified deferred compensation plans [Member] | Fair Value, Inputs, Level 1 [Member] | Reported Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trust assets for nonqualified deferred compensation plans	114	100
Other Assets [Member] | Trust Assets for nonqualified deferred compensation plans [Member] | Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trust assets for nonqualified deferred compensation plans	114	100
Accounts Payable and Accrued Liabilities [Member] | Fair Value, Inputs, Level 1 [Member] | Reported Value Measurement [Member] | Commodity Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	0	1
Accounts Payable and Accrued Liabilities [Member] | Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member] | Commodity Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	0	1
Accounts Payable and Accrued Liabilities [Member] | Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Commodity Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	3	3
Accounts Payable and Accrued Liabilities [Member] | Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Foreign Exchange Forward Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	1	1
Accounts Payable and Accrued Liabilities [Member] | Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Commodity Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	3	3
Accounts Payable and Accrued Liabilities [Member] | Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Foreign Exchange Forward Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	1	1
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] | Reported Value Measurement [Member] | Investments, including money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	379	584
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member] | Investments, including money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	379	584
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Time deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	318	165
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Time deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	318	165
Current maturities of long-term debt and Long-term debt [Member] | Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Long-term Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Current maturities of long-term debt and Long-term debt	2,781	2,780
Current maturities of long-term debt and Long-term debt [Member] | Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Long-term Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Current maturities of long-term debt and Long-term debt	$ 3,049	$ 3,051