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INCOME TAXES (Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions | 12 Months Ended
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Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] |  |  |
Unrecognized tax benefits at beginning of year | $ 47 | $ 40 | $ 37
Gross increases - tax positions in prior periods | 2 | 2 | 1
Gross decreases - tax positions in prior periods | (20) | (1) | (6)
Gross increases - current period tax positions | 6 | 8 | 9
Gross decreases - current period tax positions | 0 | 0 | 0
Lapse of applicable statute of limitations | (3) | (2) | (1)
Settlements | (1) | 0 | 0
Unrecognized tax benefits at end of year | $ 31 | $ 47 | $ 40

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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 10B -URI http://asc.fasb.org/extlink&oid=84176650&loc=SL37586934-109318 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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