SUPPLEMENTAL FINANCIAL INFORMATION - ADDITIONAL INFORMATION (Details) $ in Millions	12 Months Ended
	Jun. 30, 2020 USD ($) employees	Jun. 30, 2019 USD ($) employees	Jun. 30, 2018 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 782	$ 754	$ 1,070
Severance Packages | employees	1,200	1,810
Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 155	$ 213
Cost of Goods Sold
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	614	521
Other Nonoperating Income (Expense) [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	13	$ 20
Minimum
Restructuring Cost and Reserve [Line Items]
Historical Restructuring Costs Before Tax	250
Maximum
Restructuring Cost and Reserve [Line Items]
Historical Restructuring Costs Before Tax	$ 500