Supplemental Cash Flow Information - Supplemental Cash Flow (Details) - USD ($) $ in Millions	6 Months Ended
Nov. 30, 2024	Nov. 30, 2023
Supplemental Cash Flow Information [Abstract]
Interest (net of capitalized interest)	$ 376	$ 357
Income taxes	918	843
Income tax refunds received	(15)	(82)
Cash tax payments/(refunds), net	$ 903	$ 761

Amount, before refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-2A

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
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-Name Accounting Standards Codification
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-URI https://asc.fasb.org/1943274/2147482685/740-10-50-22

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-Topic 230
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