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Basis of Presentation and Summary of Significant Accounting Policies (Narrative, Inventories) (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Jun. 30, 2023
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Accounting Policies [Abstract] |  |
Portion of inventories held at LIFO, percentage | 50.00% | 54.00%
Inventories valued at LIFO amount higher than average cost value | $ 749 | $ 476
Inventory Reserve Excess and Obsolete [Member] |  |
Inventory Reserve Table [Line Items] |  |
Reserves for excess and obsolete inventory | $ 149 | $ 139

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- Definition Amount by which inventory stated at last-in first-out (LIFO) is less than (in excess of) inventory stated at other inventory cost methods. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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