Restructuring and Other Charges (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended		12 Months Ended
		Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2026	Jan. 31, 2025	Apr. 30, 2025
Restructuring Costs [Abstract]
Restructuring charges		$ 3	$ 25	$ 19	$ 27
Other charges	[1]	0	6	0	6
Total restructuring and other charges		3	31	19	33
Special Termination Benefits [Member]
Restructuring Costs [Abstract]
Other charges			4		4	$ 12
Impairment Charge [Member]
Restructuring Costs [Abstract]
Other charges			2		2
Severance and Other Employee-Related Costs [Member]
Restructuring Costs [Abstract]
Restructuring charges		3	19	7	19
Other Restructuring Charges [Member]
Restructuring Costs [Abstract]
Restructuring charges	[2]	$ 0	$ 6	$ 12	$ 8

[1] Represents $4 million in costs associated with a special, one-time early retirement benefit to qualifying U.S. employees and $2 million in impairment charges on certain cooperage facility assets that were recognized during the three months ended January 31, 2025.

[2] Primarily represents one-time costs related to the cooperage facility closure, consulting services, and other miscellaneous exit costs.