STOCKHOLDERS' EQUITY (Schedule of Changes in Accumulated Other Comprehensive Net (Losses) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2020		Jun. 30, 2019		Jun. 30, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, amount	$ 559		$ 726		$ 542
Other comprehensive (loss) income before reclassifications	(56)		(25)		(1)
Amounts reclassified from Accumulated other comprehensive net (loss) income	17		12		14
Cumulative effect of accounting changes	908		726		726
Income tax benefit (expense)	1		(3)		(17)
Net current period other comprehensive (loss) income	(38)		(16)		(4)
Balance, amount	908		559		726
Cumulative Effect, Period of Adoption, Adjustment [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, amount	22	[1]	(3)	[2]
Cumulative effect of accounting changes	22	[1]	22	[1]	(3)	[2]
Balance, amount			22	[1]	(3)	[2]
Foreign currency translation adjustments [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, amount	(414)		(384)		(356)
Other comprehensive (loss) income before reclassifications	(35)		(20)		(20)
Amounts reclassified from Accumulated other comprehensive net (loss) income	0		0		0
Cumulative effect of accounting changes	(450)		(414)		(384)
Income tax benefit (expense)	(1)		(2)		(8)
Net current period other comprehensive (loss) income	(36)		(22)		(28)
Balance, amount	(450)		(414)		(384)
Foreign currency translation adjustments [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, amount	(8)
Cumulative effect of accounting changes	(8)		(8)
Balance, amount			(8)
Net unrealized gains (losses) on derivatives [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, amount	(23)		(25)		(37)
Other comprehensive (loss) income before reclassifications	(5)		(5)		8
Amounts reclassified from Accumulated other comprehensive net (loss) income	10		6		6
Cumulative effect of accounting changes	(18)		(23)		(25)
Income tax benefit (expense)	0		1		(2)
Net current period other comprehensive (loss) income	5		2		12
Balance, amount	(18)		(23)		(25)
Net unrealized gains (losses) on derivatives [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, amount	0
Cumulative effect of accounting changes	0		0
Balance, amount			0
Pension and postretirement benefit adjustments [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, amount	(165)		(138)		(150)
Other comprehensive (loss) income before reclassifications	(16)		0		11
Amounts reclassified from Accumulated other comprehensive net (loss) income	7		6		8
Cumulative effect of accounting changes	(172)		(165)		(138)
Income tax benefit (expense)	2		(2)		(7)
Net current period other comprehensive (loss) income	(7)		4		12
Balance, amount	(172)		(165)		(138)
Pension and postretirement benefit adjustments [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, amount	(31)
Cumulative effect of accounting changes	(31)		(31)
Balance, amount			(31)
Accumulated other comprehensive net (loss) income [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, amount	(602)		(547)		(543)
Cumulative effect of accounting changes	(602)		(602)		(547)
Balance, amount	(640)		(602)		(547)
Accumulated other comprehensive net (loss) income [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, amount	(39)		(39)	[2]
Cumulative effect of accounting changes	$ (39)		(39)		(39)	[2]
Balance, amount			$ (39)		$ (39)	[2]

[1] As a result of adopting ASU No. 2016-02, “Leases (ASC 842),” on July 1, 2019, the Company recorded a cumulative effect of initially applying the newguidance as an adjustment to the fiscal year 2020 opening balance of Retained earnings. See Note 1 for more information.

[2] As a result of adopting ASU No. 2014-09, “Revenue from Contracts with Customers (ASC 606),” on July 1, 2018, the Company recorded a cumulativeeffect of initially applying the new guidance as an adjustment to the fiscal year 2019 opening balance of Retained earnings.