Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions		12 Months Ended
	Nov. 19, 2015	May 31, 2016 USD ($)	May 31, 2015 USD ($)	May 31, 2014 USD ($)	Dec. 23, 2015
Significant Accounting Policies [Line Items]
Stock split ratio for 100 percent of stock dividend declared	2
Dividend payable as result of stock split (as a percent)					100.00%
Reserve balances for sales discounts, returns and miscellaneous claims		$ 789	$ 724
Total advertising and promotion expenses		3,278	3,213	$ 3,031
Prepaid advertising and promotion expenses		540	455
Allowance for uncollectible accounts receivable		43	78
Increase in non-current assets		$ 2,439	2,587
Minimum | Building
Significant Accounting Policies [Line Items]
Property, plant and equipment, minimum useful life (in years)		2 years
Minimum | Leasehold improvements
Significant Accounting Policies [Line Items]
Property, plant and equipment, minimum useful life (in years)		2 years
Minimum | Machinery and Equipment
Significant Accounting Policies [Line Items]
Property, plant and equipment, minimum useful life (in years)		2 years
Minimum | Software and Software Development Costs
Significant Accounting Policies [Line Items]
Property, plant and equipment, minimum useful life (in years)		2 years
Maximum | Building
Significant Accounting Policies [Line Items]
Property, plant and equipment, minimum useful life (in years)		40 years
Maximum | Leasehold improvements
Significant Accounting Policies [Line Items]
Property, plant and equipment, minimum useful life (in years)		40 years
Maximum | Machinery and Equipment
Significant Accounting Policies [Line Items]
Property, plant and equipment, minimum useful life (in years)		15 years
Maximum | Software and Software Development Costs
Significant Accounting Policies [Line Items]
Property, plant and equipment, minimum useful life (in years)		10 years
Class B Common Stock
Significant Accounting Policies [Line Items]
Stock split ratio for 100 percent of stock dividend declared	2
Class A Convertible Common Stock
Significant Accounting Policies [Line Items]
Stock split ratio for 100 percent of stock dividend declared	2
Other Noncurrent Assets
Significant Accounting Policies [Line Items]
Allowance for uncollectible accounts receivable		$ 17	24
New Accounting Pronouncement, Early Adoption, Effect
Significant Accounting Policies [Line Items]
Reduction in current assets			389
Increase in non-current assets			386
Reduction of current liabilities			2
Reduction of non-current liabilities			$ 1