Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	May 31, 2021	May 31, 2020	May 31, 2019
Significant Accounting Policies [Line Items]
Total advertising and promotion expenses	$ 3,114	$ 3,592	$ 3,753
Prepaid advertising and promotion expenses	630	686
Allowance for uncollectible accounts receivable	$ 93	214
Building \| Minimum
Significant Accounting Policies [Line Items]
Property, plant and equipment, minimum useful life (in years)	2 years
Building \| Maximum
Significant Accounting Policies [Line Items]
Property, plant and equipment, minimum useful life (in years)	40 years
Leasehold improvements \| Minimum
Significant Accounting Policies [Line Items]
Property, plant and equipment, minimum useful life (in years)	2 years
Leasehold improvements \| Maximum
Significant Accounting Policies [Line Items]
Property, plant and equipment, minimum useful life (in years)	40 years
Land Improvements \| Minimum
Significant Accounting Policies [Line Items]
Property, plant and equipment, minimum useful life (in years)	2 years
Land Improvements \| Maximum
Significant Accounting Policies [Line Items]
Property, plant and equipment, minimum useful life (in years)	40 years
Machinery and Equipment \| Minimum
Significant Accounting Policies [Line Items]
Property, plant and equipment, minimum useful life (in years)	2 years
Machinery and Equipment \| Maximum
Significant Accounting Policies [Line Items]
Property, plant and equipment, minimum useful life (in years)	15 years
Software and Software Development Costs \| Minimum
Significant Accounting Policies [Line Items]
Property, plant and equipment, minimum useful life (in years)	2 years
Software and Software Development Costs \| Maximum
Significant Accounting Policies [Line Items]
Property, plant and equipment, minimum useful life (in years)	12 years
Prepaid expenses and other current assets
Significant Accounting Policies [Line Items]
Prepaid advertising and promotion expenses	$ 338	326
Deferred income taxes and other assets
Significant Accounting Policies [Line Items]
Prepaid advertising and promotion expenses	$ 292	$ 360