Stock-Based Compensation (Tables)

6 Months Ended

Sep. 30, 2011

Stock-based Compensation Disclosure [Abstract]

Stock option transactions

	Six Months Ended September 30,
	2011				2010
	Number of shares		Weighted-average exercise price per share		Number of shares		Weighted-average exercise price per share
Options outstanding at March 31	5,419		$	59.82	6,054		$	57.75
Granted	810		33.99		701		33.13
Exercised	(8	)	25.76		(350	)	26.25
Canceled/forfeited	(305	)	47.95		(318	)	45.56
Options outstanding at September 30	5,916		$	56.95	6,087		$	57.36

Assumptions used to determine the weighted-average fair value of option grants

	Six Months Ended September 30,
	2011		2010
Expected dividend yield	1.39	%	1.39	%
Risk-free interest rate	1.95	%	2.40	%
Expected volatility	47.16	%	52.83	%
Expected lives (in years)	5.12		5.18

Restricted stock and restricted stock unit transactions

	Six Months Ended September 30,
	2011				2010
	Number of shares		Weighted-average grant date value		Number of shares		Weighted-average grant date value
Unvested shares at March 31	2,637		$	33.01	1,605		$	34.80
Granted	1,315		33.79		1,635		33.22
Vested	(700	)	33.86		(425	)	38.53
Canceled/forfeited	(42	)	33.06		(75	)	31.47
Unvested shares at September 30	3,210		$	33.14	2,740		$	33.37