FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Narrative) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019	May 31, 2020
Derivative [Line Items]
Maximum contract duration (in years)		2 years
Maximum duration, interest rate contracts (in years)		3 years
Cash flow hedge gain (loss) to be reclassified within twelve months		$ 10,000,000
Derivative instruments subject to contractually defined counterparty liability position limits		0	$ 3,000,000
Goodwill, trademark and other asset impairments		329,000,000	0	$ 0
Goodwill		228,000,000
Professional Products SBU and Vitamins, Minerals and Supplements SBU
Derivative [Line Items]
Goodwill, trademark and other asset impairments		343,000,000
Health and Wellness
Derivative [Line Items]
Goodwill, trademark and other asset impairments	$ 329,000,000	329,000,000
Goodwill	228,000,000	228,000,000
Health and Wellness | Vitamins, Minerals and Supplements
Derivative [Line Items]
Goodwill		228,000,000
Other assets | Health and Wellness | Professional Products SBU and Vitamins, Minerals and Supplements SBU
Derivative [Line Items]
Goodwill, trademark and other asset impairments		29,000,000
Trademarks | Health and Wellness
Derivative [Line Items]
Impairment of intangible assets	$ 86,000,000
Trademarks | Health and Wellness | Vitamins, Minerals and Supplements
Derivative [Line Items]
Impairment of intangible assets		86,000,000
Interest rate derivative contracts
Derivative [Line Items]
Derivative, notional amount		$ 300,000,000	225,000,000
Amortization period of settlement payment (in years)		10 years
Total Commodity Purchase Derivative Contracts
Derivative [Line Items]
Maximum duration, commodity contracts (in years)		2 years
Derivative, notional amount		$ 32,000,000	27,000,000
Jet Fuel Swaps
Derivative [Line Items]
Derivative, notional amount		9,000,000	13,000,000
Soybean Oil Futures
Derivative [Line Items]
Derivative, notional amount		23,000,000	14,000,000
Soybean Oil Futures | Commodity purchase contract
Derivative [Line Items]
Cash margin balances amount		0	2,000,000
Purchases of Inventory | Foreign exchange derivative contracts
Derivative [Line Items]
Derivative, notional amount		70,000,000	$ 70,000,000
Other assets | Carrying Amount | Fair Value, Inputs, Level 1 | Trust assets for nonqualified deferred compensation plans
Derivative [Line Items]
Increase in deferred compensation plan		36,000,000
Senior Long-Term Notes And Debentures; 1.80%, $500 Due May 2030
Derivative [Line Items]
Face value		$ 500,000,000			$ 500,000,000