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Basis of Presentation and Summary of Significant Accounting Policies (Narrative, Recent Financial Accounting Standards) (Details) - USD ($) $ in Millions | Jun. 30, 2020 | Jul. 01, 2019 | Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017
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New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount | $ 729 |  | $ 687 | $ 626 | $ 494
Lease Liabilities established as a Result of the adoption of ASC 842 |  | $ 422 |  |  |

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- Definition Lease Liabilities established as a Result of the adoption of ASC 842 + References No definition available. + Details
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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column B)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column E)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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