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REVENUE RECOGNITION (Tables) | 6 Months Ended
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Dec. 31, 2020
Revenue from Contract with Customer [Abstract] |
Schedule of changes in allowance for credit losses | Changes in the allowance for credit losses are as follows:
(In millions) |  | December 31 2020
Balance at June 30, 2020 |  | $ | 36 |
ASC 326 cumulative effect adjustment (pre-tax) |  | 4 |
Provision for expected credit losses |  | 7 |
Write-offs, net & other |  | (8) |
Balance at December 31, 2020 |  | $ | 39 |
Schedule of significant changes in deferred revenue | Changes in deferred revenue during the period are as follows:
|  | Three Months Ended December 31 |  | Six Months Ended December 31
(In millions) |  | 2020 |  | 2019 |  | 2020 |  | 2019
Deferred revenue, beginning of period |  | $ | 409 |  |  | $ | 392 |  |  | $ | 279 |  |  | $ | 361 |
Revenue recognized that was included in the deferred revenue balance at the beginning of the period |  | (83) |  |  | (83) |  |  | (173) |  |  | (243) |
Revenue deferred during the period |  | 92 |  |  | 112 |  |  | 308 |  |  | 307 |
Other |  | 2 |  |  | 4 |  |  | 6 |  |  | — |
Deferred revenue, end of period |  | $ | 420 |  |  | $ | 425 |  |  | $ | 420 |  |  | $ | 425 |

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- Definition Tabular disclosure of allowance for credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 + Details
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- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130551-203045 + Details
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