Earnings Per Common Share (Tables)

12 Months Ended

Mar. 31, 2012

Earnings Per Common Share [Abstract]

Basic And Diluted Earnings Per Common Share

		Years Ended March 31,
(In millions, except per share amounts)		2012		2011		2010
Income from continuing operations	$	1,403	$	1,130	$	1,263
Discontinued operation - gain on sale, net of tax		0		72		0
Net income	$	1,403	$	1,202	$	1,263
Weighted average common shares outstanding:
Basic		246		258		269
Effect of dilutive securities:
Options to purchase common stock		2		3		3
Restricted stock units		3		2		1
Diluted		251		263		273
Earnings per common share: (1)
Basic
Continuing operations	$	5.70	$	4.37	$	4.70
Discontinued operation, net		0		0.28		0
Total	$	5.70	$	4.65	$	4.70
Diluted
Continuing operations	$	5.59	$	4.29	$	4.62
Discontinued operation, net		0		0.28		0
Total	$	5.59	$	4.57	$	4.62

(1) Certain computations may reflect rounding adjustments.