Earnings Per Share (Tables)

3 Months Ended

Jul. 31, 2021

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
	July 31,
(Dollars in millions, except per share amounts)	2020		2021
Net income available to common stockholders	$	324	$	192
Share data (in thousands):
Basic average common shares outstanding	478,327		478,793
Dilutive effect of stock-based awards	2,102		1,925
Diluted average common shares outstanding	480,429		480,718
Basic earnings per share	$	0.68	$	0.40
Diluted earnings per share	$	0.67	$	0.40