Earnings Per Share (Tables)

12 Months Ended

Apr. 30, 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: 

	2019		2020		2021
Net income available to common stockholders	$	835	$	827	$	903
Share data (in thousands):
Basic average common shares outstanding	478,956		477,765		478,527
Dilutive effect of stock-based awards	3,111		2,644		2,150
Diluted average common shares outstanding	482,067		480,409		480,677
Basic earnings per share	$	1.74	$	1.73	$	1.89
Diluted earnings per share	$	1.73	$	1.72	$	1.88