SCHEDULE II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Millions		12 Months Ended
		May. 31, 2015	May. 31, 2014	May. 31, 2013
Allowance for Sales Returns
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		$ 308	$ 241	$ 173
Charged to Costs and Expenses		726	619	538
Charged to Other Accounts	[1]	(35)	(3)	1
Write-Offs, Net		(620)	(549)	(471)
Balance at End of Period		379	308	241
Allowance for Doubtful Accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	[2]	78	104	91
Charged to Costs and Expenses	[2]	35	13	31
Charged to Other Accounts	[1],[2]	(15)	(2)	1
Write-Offs, Net	[2]	(20)	(37)	(19)
Balance at End of Period	[2]	$ 78	$ 78	$ 104

[1] Amounts included in this column primarily relate to foreign currency translation.

[2] Includes both current and non-current portions of the allowance for doubtful accounts. The non-current portion is included in Deferred income taxes and other assets on the Consolidated Balance Sheets.