Net Sales by Geography (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2025	Jan. 31, 2024
Disaggregation of Revenue [Line Items]
Net sales		$ 1,035	$ 1,069	$ 3,081	$ 3,214
United States [Member]
Disaggregation of Revenue [Line Items]
Net sales		459	469	1,367	1,442
Developed International [Member]
Disaggregation of Revenue [Line Items]
Net sales	[1]	298	310	867	910
Emerging [Member]
Disaggregation of Revenue [Line Items]
Net sales	[2]	220	235	647	677
Travel Retail [Member]
Disaggregation of Revenue [Line Items]
Net sales	[3]	35	37	121	127
Non-branded and bulk [Member]
Disaggregation of Revenue [Line Items]
Net sales	[4]	$ 23	$ 18	$ 79	$ 58

[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.