Income from Continuing Operations Per Common Share (Tables)

9 Months Ended

Dec. 31, 2011

Income From Continuing Operations Per Common Share [Abstract]

Reconciliation of earnings per common share

	Three Months Ended December 31,						Nine Months Ended December  31,
	2011			2010			2011			2010
	(in millions, except per share amounts)
Basic income from continuing operations per common share:
Income from continuing operations	$	263		$	196		$	727		$	636
Less: Income from continuing operations allocable to participating securities		(3	)		(2	)		(9	)		(7	)
Income from continuing operations allocable to common shares	$	260		$	194		$	718		$	629
Weighted-average common shares outstanding		483			505			492			507
Basic income from continuing operations per common share	$	0.54		$	0.38		$	1.46		$	1.24
Diluted income from continuing operations per common share:
Income from continuing operations	$	263		$	196		$	727		$	636
Less: Income from continuing operations allocable to participating securities		(3	)		(2	)		(9	)		(7	)
Income from continuing operations allocable to common shares	$	260		$	194		$	718		$	629
Weighted average shares outstanding and common share equivalents
Weighted average common shares outstanding		483			505			492			507
Weighted average effect of share-based payment awards		1			1			1			1
Denominator in calculation of diluted income per share		484			506			493			508
Diluted income from continuing operations per common share	$	0.54		$	0.38		$	1.46		$	1.24