Stock-based Compnesation (Tables)

9 Months Ended

Aug. 31, 2012

Share-based Compensation [Abstract]

Stock Based Compensation in Selling, General and Administrative Expense

The following table sets forth the stock-based compensation recorded in selling, general and administrative (SG&A) expense (in millions):

	Three months ended August 31,				Nine months ended August 31,
	2012		2011		2012		2011
Stock-based compensation expense	$	3.3	$	2.8	$	11.9	$	10.4

Range of Assumptions for Stock Compensation Plans

The fair values of option grants in the stated periods were computed using the following range of assumptions for our various stock compensation plans:

	2012	2011
Risk-free interest rates	0.1 - 2.2%	0.1 - 3.5%
Dividend yield	2.3%	2.4%
Expected volatility	16.5 - 21.6%	15.2 - 22.2%
Expected lives	6.1	6.4

Summary of Restricted Stock Unit Activity

The following is a summary of all stock option activity for the nine months ended August 31, 2012 and 2011:

	2012				2011
(shares in millions)	Number of Shares		Weighted- Average Exercise Price		Number of Shares		Weighted- Average Exercise Price
Outstanding at beginning of period	6.6		$	34.98	7.4		$	32.01
Granted	0.8		54.24		0.9		47.40
Exercised	(1.7	)	30.41		(1.4	)	29.28
Outstanding at end of the period	5.7		39.31		6.9		34.77
Exercisable at end of the period	3.4		$	34.78	4.5		$	32.10

Summary of Option Activity

The following is a summary of all of our RSU activity for the nine months ended August 31, 2012 and 2011:

	2012				2011
(shares in thousands)	Number of Shares		Weighted- Average Grant-Date Fair Value		Number of Shares		Weighted- Average Grant-Date Fair Value
Outstanding at beginning of period	233		$	43.23	289		$	35.42
Granted	112		54.24		134		47.40
Vested	(146	)	42.74		(183	)	34.04
Forfeited	(6	)	47.42		(3	)	38.69
Outstanding at end of period	193		$	49.84	237		$	43.24