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Basis of Presentation and Summary of Significant Accounting Policies (Narrative, Inventories) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2022
Accounting Policies [Abstract]
Portion of inventories held at LIFO, percentage	50.00%	52.00%
Inventories valued at LIFO amount higher than average cost value	$ 565	$ 416
Inventory Write-down	197
Inventory Reserve Excess and Obsolete [Member]
Inventory Reserve Table [Line Items]
Reserves for excess and obsolete inventory	$ 185	147
Inventory Reserve Write-down to Net Realizable Value [Member]
Inventory Reserve Table [Line Items]
Reserves for excess and obsolete inventory		$ 42

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Inventory Reserve Table [Line Items]

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(6)(c))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Amount of valuation reserve for inventory.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(6))
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-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section S99
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Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section 50
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=116847112&loc=d3e4542-108314

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The percentage of LIFO (last in first out) inventory to total inventory as of the balance sheet date if other than 100 percent.

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