Earnings Per Share (Tables)

9 Months Ended

Jan. 31, 2016

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				Nine Months Ended
	January 31,				January 31,
(Dollars in millions, except per share amounts)	2015		2016		2015		2016
Net income available to common stockholders	$	186	$	190	$	543	$	545
Share data (in thousands):
Basic average common shares outstanding	211,126		201,182		212,189		204,242
Dilutive effect of stock-based awards	1,480		1,208		1,512		1,334
Diluted average common shares outstanding	212,606		202,390		213,701		205,576
Basic earnings per share	$	0.88	$	0.94	$	2.56	$	2.67
Diluted earnings per share	$	0.87	$	0.94	$	2.54	$	2.65