STOCK-BASED COMPENSATION PLANS - Narrative (Details) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
	Nov. 30, 2021 shares	Jun. 30, 2026 USD ($) $ / shares shares	Jun. 30, 2025 USD ($) $ / shares shares	Jun. 30, 2024 USD ($) $ / shares shares	Jun. 30, 2023 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of additional shares authorized (in shares)	5,000,000
Number of shares authorized (in shares)		5,000,000
Number of shares available for grant (in shares)		4,000,000
Issuance of common stock for employee stock plans and other | $		$ 13	$ 61	$ 23
Stock option awards granted (in shares)		0	0	0
Weighted average fair value per share (in dollars per share) | $ / shares					$ 26.95
Total intrinsic value of options exercised | $		$ 2	$ 19	$ 12
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)		4 years
Expiration period (in years)		10 years
Compensation cost not yet recognized | $		$ 1
Compensation costs not yet recognized, period for recognition (in years)		1 year
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost not yet recognized | $		$ 63
Compensation costs not yet recognized, period for recognition (in years)		2 years
Fair value of shares vested | $		$ 43	$ 42	$ 28
Granted (in dollars per share) | $ / shares		$ 114.28	$ 160.05	$ 138.51
Nonvested awards outstanding (in shares)		1,174,000	754,000
Weighted-average grant date fair value per share of nonvested awards (in dollars per share) | $ / shares		$ 127	$ 150
Vested (in shares)		287,000
Restricted Stock | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)		3 years
Restricted Stock | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)		4 years
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)		3 years
Compensation cost not yet recognized | $		$ 7
Compensation costs not yet recognized, period for recognition (in years)		2 years
Fair value of shares vested | $		$ 26	$ 22	$ 12
Granted (in dollars per share) | $ / shares		$ 124.51	$ 162.85	$ 140.39
Nonvested awards outstanding (in shares)		577,000	464,000
Weighted-average grant date fair value per share of nonvested awards (in dollars per share) | $ / shares		$ 138.02	$ 148.45
Vested (in shares)		185,000
Deferred Stock Units for Nonemployee Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock conversion ratio		1
Deferred stock units for nonemployee directors granted (in shares)		24,000
Deferred stock units for nonemployee directors reinvested dividends (in shares)		5,000
Deferred stock units for nonemployee directors distributed (in shares)		19,000
Deferred stock units for nonemployee directors granted weighted average fair value on grant date (in dollars per share) | $ / shares		$ 102.58
Deferred stock units for nonemployee directors reinvested weighted average fair value on grant date (in dollars per share) | $ / shares			$ 108.92
Deferred stock units for nonemployee directors distributed weighted average fair value on grant date (in dollars per share) | $ / shares				$ 141.42
Deferred stock units for nonemployee directors outstanding (in shares)		121,000
Deferred stock units for nonemployee directors outstanding weighted average fair value on grant date (in dollars per share) | $ / shares		$ 140.32