Earnings Per Share (Tables)

6 Months Ended

Oct. 31, 2013

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

The following table presents information concerning basic and diluted earnings per share:

	Three Months Ended				Six Months Ended
	October 31,				October 31,
(Dollars in millions, except per share amounts)	2012		2013		2012		2013
Net income available to common stockholders	$	173	$	206	$	320	$	349
Share data (in thousands):
Basic average common shares outstanding	213,276		213,587		213,220		213,634
Dilutive effect of stock-based awards	1,615		1,617		1,623		1,614
Diluted average common shares outstanding	214,891		215,204		214,843		215,248
Basic earnings per share	$	0.81	$	0.97	$	1.50	$	1.63
Diluted earnings per share	$	0.80	$	0.96	$	1.49	$	1.62