OTHER CONTINGENCIES AND GUARANTEES (Details) - USD ($) $ in Millions	6 Months Ended
	Dec. 31, 2021	Jun. 30, 2021
Loss Contingencies [Line Items]
Liability for aggregate future remediation costs	$ 28	$ 28
Letter of credit	14
Letter of credit, amount outstanding	0
Alameda County, California Matter
Loss Contingencies [Line Items]
Liability for aggregate future remediation costs	$ 14	14
Remediation period (in years)	30 years
Maximum undiscounted costs	$ 28
Dickinson County, Michigan Matter
Loss Contingencies [Line Items]
Liability for aggregate future remediation costs	$ 10	$ 10
Remediation period (in years)	30 years
Percentage of liability for aggregate remediation and associated costs, other than legal fees	24.30%