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Risk Management and Derivatives - Amounts Affecting Consolidated Statements of Income (Detail) - USD ($) $ in Millions | 12 Months Ended
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May 31, 2018 | May 31, 2017 | May 31, 2016
Foreign Exchange Contract | Other (income) expense, net | Derivatives not designated as hedging instruments |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amount of Gain (Loss) Recognized in Income on Derivatives | $ (57) | $ (44) | $ (68)
Embedded derivatives | Other (income) expense, net | Derivatives not designated as hedging instruments |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amount of Gain (Loss) Recognized in Income on Derivatives | (4) | (2) | (2)
Derivatives designated as cash flow hedges |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivatives | (49) | 94 | (75)
Amount of Gain (Loss) Reclassified From Accumulated Other Comprehensive Income into Income | (131) | 630 | 717
Derivatives designated as cash flow hedges | Foreign Exchange Contract | Revenue |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivatives | 19 | 72 | 90
Amount of Gain (Loss) Reclassified From Accumulated Other Comprehensive Income into Income | 34 | 96 | (88)
Derivatives designated as cash flow hedges | Foreign Exchange Contract | Cost of sales |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivatives | (50) | 43 | (57)
Amount of Gain (Loss) Reclassified From Accumulated Other Comprehensive Income into Income | (90) | 339 | 586
Derivatives designated as cash flow hedges | Foreign Exchange Contract | Selling and administrative expense |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivatives | 1 | (4) | 0
Amount of Gain (Loss) Reclassified From Accumulated Other Comprehensive Income into Income | 1 | 0 | 0
Derivatives designated as cash flow hedges | Foreign Exchange Contract | Other (income) expense, net |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivatives | (19) | 37 | (25)
Amount of Gain (Loss) Reclassified From Accumulated Other Comprehensive Income into Income | (69) | 199 | 219
Derivatives designated as cash flow hedges | Interest rate swaps | Interest (income) expense, net |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivatives | 0 | (54) | (83)
Amount of Gain (Loss) Reclassified From Accumulated Other Comprehensive Income into Income | (7) | (4) | 0
Derivatives designated as fair value hedges | Interest rate swaps | Interest (income) expense, net |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amount of Gain (Loss) Recognized in Income on Derivatives | $ 0 | $ 0 | $ 2

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4D -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624177-113959 + Details
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- Definition The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
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