Stock-Based Compensation (Tables)

3 Months Ended

Jun. 30, 2012

Stock-based Compensation Disclosure [Abstract]

Stock option transactions

	Three Months Ended June 30,
	2012				2011
	Number of shares		Weighted-average exercise price per share		Number of shares		Weighted-average exercise price per share
Options outstanding at March 31	5,624		$	57.78	5,419		$	59.82
Granted	966		23.72		810		33.99
Exercised	—		—		(6	)	29.73
Canceled/forfeited	(263	)	65.61		(54	)	48.18
Options outstanding at June 30	6,327		$	52.25	6,169		$	56.56

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

	Three Months Ended June 30,
	2012		2011
Expected dividend yield	1.44	%	1.39	%
Risk-free interest rate	0.81	%	1.95	%
Expected volatility	51.80	%	47.16	%
Expected life (in years)	5.02		5.12

Restricted stock and restricted stock unit transactions

	Three Months Ended June 30,
	2012				2011
	Number of shares		Weighted-average grant date value		Number of shares		Weighted-average grant date value
Unvested shares at March 31	2,873		$	33.83	2,637		$	33.01
Granted	1,842		23.72		1,247		33.99
Vested	(881	)	32.41		(678	)	34.05
Canceled/forfeited	(27	)	30.86		(19	)	33.29
Unvested shares at June 30	3,807		$	29.29	3,187		$	33.17