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Basis of Presentation and Summary of Significant Accounting Policies (Narrative, Goodwill and Other Intangible Assets) (Details) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2020 USD ($) segment | Jun. 30, 2018 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2017 USD ($)
Goodwill and Intangible Assets [Line Items] |  |  |  |
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount | $ 729 | $ 626 | $ 687 | $ 494
Goodwill, Impairment Loss |  | 1,400 |  |
Discount Rate, fair value inputs | 8.50% |  |  |
Number of Operating Segments | segment | 2 |  |  |
Minimum |  |  |  |
Goodwill and Intangible Assets [Line Items] |  |  |  |
Discount Rate, fair value inputs | 8.50% |  |  |
Maximum |  |  |  |
Goodwill and Intangible Assets [Line Items] |  |  |  |
Discount Rate, fair value inputs | 10.50% |  |  |
SEC Schedule, 12-09, Allowance, Loss on Finance Receivable [Member] |  |  |  |
Goodwill and Intangible Assets [Line Items] |  |  |  |
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount | $ 27 | $ 7 | $ 14 | $ 9

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- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13777-109266 + Details
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