Stock-Based Compensation (Tables)

12 Months Ended

Apr. 30, 2012

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary Of Stock Options

	(in 000s, except per share amounts)
	Shares			Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term		Aggregate Intrinsic Value
Outstanding, beginning of the year		10,790		$	18.64
Granted		2,658			16.46
Exercised		(658	)		15.32
Forfeited or expired		(5,482	)		18.81
Outstanding, end of the year		7,308		$	18.02		6 years	$	2,117
Exercisable, end of the year		4,114		$	19.86		4 years	$	751
Exercisable and expected to vest		6,950			18.15		6 years		1,941

Assumptions Used To Value Options

Year ended April 30,	2012		2011		2010
Options – management and director:
Expected volatility		31.75% - 32.34%		28.98% - 30.20%		27.11% - 27.27%
Expected term		5 years		5 years		5 years
Dividend yield		3.43% - 4.80%		4.18% - 5.17%		3.24% - 3.55%
Risk-free interest rate		0.79% - 1.95%		1.26% - 1.92%		2.38% - 2.75%
Weighted-average fair value	$	3.31	$	2.25	$	3.27
Options – seasonal: (1)
Expected volatility						33.81%
Expected term						2 years
Dividend yield						3.48%
Risk-free interest rate						0.85%
Weighted-average fair value					$	2.70
ESPP options:
Expected volatility		24.27% - 33.07%		22.75% - 23.31%		23.68% - 43.20%
Expected term		0.5 years		0.5 years		0.5 years
Dividend yield		3.68% - 4.93%		3.86% - 4.80%		2.65% - 3.46%
Risk-free interest rate		0.06% - 0.10%		0.19% - 0.23%		0.20% - 0.33%
Weighted-average fair value	$	2.78	$	2.16	$	3.66

⁽¹⁾  This plan was terminated in fiscal year 2010, except for outstanding awards thereunder.

Summary Of Nonvested Shares

	(shares in 000s)
	Shares			Weighted-Average Grant Date Fair Value
Outstanding, beginning of the year		1,150		$	15.35
Granted		787			16.28
Released		(522	)		17.22
Forfeited		(180	)		15.46
Outstanding, end of the year		1,235		$	15.12

Summary Of Nonvested Share And Performance-Based Nonvested Share Units

	(shares in 000s)
	Shares			Weighted-Average Grant Date Fair Value
Outstanding, beginning of the year		350		$	17.30
Granted		228			15.75
Released		(162	)		16.71
Forfeited		(10	)		16.89
Outstanding, end of the year		406		$	16.07

Performance-Based Nonvested Share Units [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Assumptions Used To Value Options

Expected volatility		20.68% - 143.12 %
Expected term		3 years
Dividend yield		0% (1)
Risk-free interest rate		0.75%
Weighted-average fair value	$	17.46

⁽¹⁾  The valuation model assumes that dividends are reinvested by the issuing entity on a continuous basis.