Net Sales by Geography (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Disaggregation of Revenue [Line Items]
Net sales		$ 1,095	$ 1,107	$ 2,046	$ 2,145
United States [Member]
Disaggregation of Revenue [Line Items]
Net sales		489	531	908	973
Developed International [Member]
Disaggregation of Revenue [Line Items]
Net sales	[1]	289	291	569	600
Emerging [Member]
Disaggregation of Revenue [Line Items]
Net sales	[2]	242	221	427	442
Travel Retail [Member]
Disaggregation of Revenue [Line Items]
Net sales	[3]	45	44	86	90
Non-branded and bulk [Member]
Disaggregation of Revenue [Line Items]
Net sales	[4]	$ 30	$ 20	$ 56	$ 40

[1] Represents net sales of branded products to “advanced economies” as defined by the International Monetary Fund (IMF), excluding the United States. Our top developed international markets are Germany, Australia, the United Kingdom, France, Canada, and Spain.

[2] Represents net sales of branded products to “emerging and developing economies” as defined by the IMF. Our top emerging markets are Mexico, Poland, and Brazil.

[3] Represents net sales of branded products to global duty-free customers, other travel retail customers, and the U.S. military, regardless of customer location.

[4] Includes net sales of used barrels, contract bottling services, and non-branded bulk whiskey, regardless of customer location.