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Income Taxes - Uncertain Tax Positions (Details) - USD ($) $ in Millions | 12 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2020
Change in accrual for uncertain tax positions, excluding interest and penalties |  |  |
Balance, beginning of year | $ 30 | $ 73 | $ 94
Additions for prior year tax positions | 1 | 0 | 1
Additions for current year tax positions | 2 | 2 | 2
Reduction for prior year tax positions | (5) | (45) | (24)
Balance, end of year | 28 | 30 | 73
Reduction for prior year tax positions from the settlement of audits | $ 5 | 31 |
Reduction for prior year tax positions from the expiration of statutes of limitations |  | $ 14 | $ 21

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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 https://asc.fasb.org/extlink&oid=123427490&loc=SL37586934-109318 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=121826272&loc=SL6600010-109319 + Details
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