Stockholders' Equity (Tables)

6 Months Ended

Sep. 30, 2011

Stockholders' Equity [Abstract]

Computation of Basic and Diluted EPS

	Quarter Ended					Six Months Ended
	September 30,					September 30,
	2011		2010			2011		2010
	(In millions, except per share data)
Basic earnings per share:
Net earnings	$	114.7	$	131.8		$	210.4	$	224.6
Less earnings allocated to participating securities		—		(0.1	)		—		(0.2	)
Net earnings allocated to common shares	$	114.7	$	131.7		$	210.4	$	224.4
Weighted average number of common shares outstanding		173.0		178.3			174.7		177.9
Basic earnings per share	$	0.66	$	0.74		$	1.20	$	1.26
Diluted earnings per share:
Net earnings	$	114.7	$	131.8		$	210.4	$	224.6
Less earnings allocated to participating securities		—		(0.1	)		—		(0.2	)
Net earnings allocated to common shares	$	114.7	$	131.7		$	210.4	$	224.4
Weighted average number of common shares outstanding		173.0		178.3			174.7		177.9
Incremental shares from assumed conversions of share-based awards		3.0		3.1			3.6		3.3
Adjusted weighted average number of common shares outstanding		176.0		181.4			178.3		181.2
Diluted earnings per share	$	0.65	$	0.73		$	1.18	$	1.24