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Risk Management and Derivatives - Additional Information (Detail) - USD ($) | 6 Months Ended |
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Nov. 30, 2019 | May 31, 2019
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Credit risk related contingent features collateral threshold | $ 50,000,000 |
Deferred net gains (net of tax) on both outstanding and matured derivatives accumulated in other comprehensive income are expected to be reclassified to net income during the next twelve months as a result of underlying hedged transactions also being recorded in net income | $ 389,000,000 |
Maximum term over which the Company is hedging exposures to the variability of cash flows for its forecasted and recorded transactions (in months) | 18 months |
Derivative instruments in net liability position | $ 20,000,000 |
Collateral received from counterparties to hedging instruments | 122,000,000 | $ 289,000,000
Not designated as derivative instrument |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Total notional amount of outstanding derivatives | 3,900,000,000 |
Embedded derivatives |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Total notional amount of outstanding derivatives | $ 363,000,000 |
Derivatives designated as cash flow hedges |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Additional period for forecasted transaction expected to occur | 2 years |
Total notional amount of outstanding derivatives | $ 9,000,000,000.0 |
Cash and Cash Equivalents |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Collateral received from counterparties to hedging instruments | 122,000,000 |
Cash and Cash Equivalents | Foreign exchange forwards and options |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Collateral received from counterparties to hedging instruments | $ 122,000,000 | $ 289,000,000

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Credit Risk Related Contingent Features, Collateral Threshold + References No definition available. + Details
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- Definition Fair value of securities received as collateral against derivative assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226013-175313 + Details
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- Definition The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624258-113959 + Details
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- Definition The estimated net amount of unrealized gains or losses on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=112277219&loc=d3e80748-113994 + Details
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- Definition Maximum amount of time remaining before foreign currency exchange rate derivatives mature or expire, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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