Earnings Per Share (Tables)

3 Months Ended

Jul. 31, 2022

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)	2021		2022
Net income available to common stockholders	$	192	$	249
Share data (in thousands):
Basic average common shares outstanding	478,793		479,079
Dilutive effect of stock-based awards	1,925		1,365
Diluted average common shares outstanding	480,718		480,444
Basic earnings per share	$	0.40	$	0.52
Diluted earnings per share	$	0.40	$	0.52