Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Jul. 31, 2024	Jul. 31, 2023
Earnings Per Share [Abstract]
Net income available to common stockholders, basic	$ 195	$ 231
Net income available to common stockholders, diluted	$ 195	$ 231
Share data (in thousands):
Basic average common shares outstanding	472,637	479,353
Dilutive effect of stock-based awards	304	1,030
Diluted average common shares outstanding	472,941	480,383
Basic earnings per share (dollars per share)	$ 0.41	$ 0.48
Diluted earnings per share (dollars per share)	$ 0.41	$ 0.48