SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Jun. 30, 2021
Income Tax Contingency [Line Items]
Effective rate for income taxes (as a percent)	21.50%	14.90%	21.90%	17.60%
Basis-point change from the prior-year period (as a percent)	6.60%		4.30%
Gross unrecognized tax benefits	$ 62		$ 62		$ 62
Total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate	52		52
Gross interest and penalty accrued	1		4
Total gross accrued interest and penalties related to unrecognized tax benefits	$ 15		$ 15		$ 14
Internal Revenue Service (IRS) | Fiscal Year 2020 and 2019
Income Tax Contingency [Line Items]
Tax cuts and jobs act, change in enacted rate after application of GILTI (as a percent)		(4.70%)		(2.80%)