Amounts Affecting the Consolidated Statements of Income (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Nov. 30, 2011		Nov. 30, 2010		Nov. 30, 2011		Nov. 30, 2010
Derivatives not designated as hedging instruments | Foreign exchange forwards and options | Other (income) expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income on derivatives	$ 26		$ (20)		$ 3		$ (31)
Derivatives designated as cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in other comprehensive income on derivatives	209	[1]	(13)	[2]	171	[1]	(113)	[2]
Amount of gain (loss) reclassified from accumulated other comprehensive income into income	(35)	[1]	44	[2]	(79)	[1]	103	[2]
Derivatives designated as cash flow hedges | Foreign exchange forwards and options | Revenue
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in other comprehensive income on derivatives	(4)	[1]	33	[2]	17	[1]	4	[2]
Amount of gain (loss) reclassified from accumulated other comprehensive income into income	7	[1]	(10)	[2]	14	[1]	(23)	[2]
Derivatives designated as cash flow hedges | Foreign exchange forwards and options | Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in other comprehensive income on derivatives	186	[1]	(36)	[2]	143	[1]	(86)	[2]
Amount of gain (loss) reclassified from accumulated other comprehensive income into income	(34)	[1]	35	[2]	(73)	[1]	87	[2]
Derivatives designated as cash flow hedges | Foreign exchange forwards and options | Selling and administrative expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in other comprehensive income on derivatives	2	[1]	(3)	[2]	0	[1]	(1)	[2]
Amount of gain (loss) reclassified from accumulated other comprehensive income into income	(1)	[1]	1	[2]	(2)	[1]	1	[2]
Derivatives designated as cash flow hedges | Foreign exchange forwards and options | Other (income) expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in other comprehensive income on derivatives	25	[1]	(7)	[2]	11	[1]	(30)	[2]
Amount of gain (loss) reclassified from accumulated other comprehensive income into income	(7)	[1]	18	[2]	(18)	[1]	38	[2]
Derivatives designated as net investment hedges | Foreign exchange forwards and options | Other (income) expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in other comprehensive income on derivatives	46	[1]	(4)	[2]	37	[1]	(24)	[2]
Amount of gain (loss) reclassified from accumulated other comprehensive income into income	0	[1]	0	[2]	0	[1]	0	[2]
Derivatives designated as fair value hedges | Interest rate swap contracts | Interest (income) expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income on derivatives	$ 2	[3]	$ 1	[3]	$ 4	[3]	$ 3	[3]

[1] For the three and six month periods ended November 30, 2011, the Company recognized an immaterial amount of ineffectiveness from cash flow hedges.

[2] For the three and six month periods ended November 30, 2010, the Company recognized an immaterial amount of ineffectiveness from cash flow hedges.

[3] All interest rate swap agreements meet the shortcut method requirements under the accounting standards for derivatives and hedging. Accordingly, changes in the fair values of the interest rate swap agreements are considered to exactly offset changes in the fair value of the underlying long-term debt. Refer to section "Fair Value Hedges" below for additional detail.