Fair Value Measurements - Derivative Assets and Liabilities at Fair Value (Detail) - USD ($)	Nov. 30, 2020	May 31, 2020
Derivatives, Fair Value [Line Items]
ACCRUED LIABILITIES	$ 485,000,000	$ 190,000,000
Fair Value, Measurements, Recurring | Foreign exchange forwards and options
Derivatives, Fair Value [Line Items]
Reduction in derivative liabilities if netted	30,000,000	76,000,000
Reduction in derivative assets if netted	30,000,000	76,000,000
Cash and Cash Equivalents
Derivatives, Fair Value [Line Items]
Derivative asset, fair value of collateral	0
Cash and Cash Equivalents | Foreign exchange forwards and options
Derivatives, Fair Value [Line Items]
Derivative asset, fair value of collateral	170,000,000	0
Fair value of derivative liability collateral	0	0
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring
Derivatives, Fair Value [Line Items]
ASSETS AT FAIR VALUE	30,000,000	95,000,000
OTHER CURRENT ASSETS	27,000,000	92,000,000
OTHER LONG-TERM ASSETS	3,000,000	3,000,000
LIABILITIES AT FAIR VALUE	584,000,000	207,000,000
ACCRUED LIABILITIES	485,000,000	190,000,000
OTHER LONG-TERM LIABILITIES	99,000,000	17,000,000
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Foreign exchange forwards and options
Derivatives, Fair Value [Line Items]
ASSETS AT FAIR VALUE	30,000,000	94,000,000
OTHER CURRENT ASSETS	27,000,000	91,000,000
OTHER LONG-TERM ASSETS	3,000,000	3,000,000
LIABILITIES AT FAIR VALUE	579,000,000	205,000,000
ACCRUED LIABILITIES	480,000,000	188,000,000
OTHER LONG-TERM LIABILITIES	99,000,000	17,000,000
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Embedded derivatives
Derivatives, Fair Value [Line Items]
ASSETS AT FAIR VALUE	0	1,000,000
OTHER CURRENT ASSETS	0	1,000,000
OTHER LONG-TERM ASSETS	0	0
LIABILITIES AT FAIR VALUE	5,000,000	2,000,000
ACCRUED LIABILITIES	5,000,000	2,000,000
OTHER LONG-TERM LIABILITIES	$ 0	$ 0