Stock Based Compensation (Tables)

12 Months Ended

May 31, 2014

Stock Based Compensation (Tables) [Abstract]

Stock-based compensation expense

	2014		2013		2012
Stock-based compensation expense	$	117	$	109	$	105

Schedule of Stock Based Compensation Key Assumptions for Valuation

		2014			2013			2012
Weighted-average Black-Scholes value		$	35.79		$	29.20		$	29.92
Intrinsic value of options exercised		$	347		$	107		$	67
Black-Scholes Assumptions:
	Expected lives		6.2 years			6.1 years			6.0 years
	Expected volatility		35	%		35	%		34	%
	Risk-free interest rate		1.47	%		0.94	%		1.79	%
	Dividend yield		0.561	%		0.609	%		0.563	%

Schedule of Stock Option Activity

		Stock Options
		Shares		Weighted-Average Exercise Price	Weighted-Average Remaining Contractual Term	Aggregate Intrinsic Value (in millions)(1)
Outstanding at June 1, 2013		19,135,434	$	87.62
	Granted	3,482,179		103.83
	Exercised	(6,468,517)		86.15
	Forfeited	(514,240)		91.61
Outstanding at May 31, 2014		15,634,856	$	91.71	6.0	$	820
Exercisable		8,913,173	$	88.81	4.3	$	493
Expected to vest		6,318,382	$	95.56	8.3	$	307
Available for future grants		13,108,873
(1)	Only presented for options with market value at May 31, 2014 in excess of the exercise price of the option.

Schedule of Vested and Unvested Restricted Stock

		Restricted Stock
		Shares	Weighted-Average Grant Date Fair Value
Unvested at June 1, 2013		529,334	$	80.86
	Granted	191,964		100.80
	Vested	(239,716)		75.48
	Forfeited	(1,425)		100.46
Unvested at May 31, 2014		480,157	$	91.46

Schedule of Stock Option Vesting

	Stock Options
	Vested during the year	Fair value (in millions)
2014	2,408,179	$	65
2013	2,824,757		81
2012	2,807,809		70