Earnings Per Share (Tables)

6 Months Ended

Oct. 31, 2015

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)	2014		2015		2014		2015
Net income available to common stockholders	$	208	$	200	$	358	$	356
Share data (in thousands):
Basic average common shares outstanding	212,087		204,055		212,674		205,558
Dilutive effect of stock-based awards	1,482		1,376		1,528		1,375
Diluted average common shares outstanding	213,569		205,431		214,202		206,933
Basic earnings per share	$	0.98	$	0.98	$	1.68	$	1.73
Diluted earnings per share	$	0.97	$	0.97	$	1.67	$	1.72