Income Taxes - Deferred Tax Assets and Liabilities (Detail) (USD $) In Millions, unless otherwise specified	May 31, 2014	May 31, 2013
Deferred tax assets:
Allowance for doubtful accounts	$ 11	$ 20
Inventories	49	40
Sales return reserves	113	101
Deferred compensation	211	197
Stock-based compensation	162	140
Reserves and accrued liabilities	95	66
Foreign loss carry-forwards	16	19
Foreign tax credit carry-forwards	0	106
Undistributed earnings of foreign subsidiaries	194	147
Other	51	47
Total deferred tax assets	902	883
Valuation allowance	(9)	(5)
Total deferred tax assets after valuation allowance	893	878
Deferred tax liabilities:
Property, plant and equipment	(237)	(241)
Intangibles	(94)	(78)
Other	(2)	(20)
Total deferred tax liability	(333)	(339)
NET DEFERRED TAX ASSET	$ 560	$ 539