Net Sales by Product Category (Details) - USD ($) $ in Millions		12 Months Ended
		Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2019
Disaggregation of Revenue [Line Items]
Net sales		$ 3,461	$ 3,363	$ 3,324
Whiskey [Member]
Disaggregation of Revenue [Line Items]
Net sales	[1]	2,744	2,671	2,595
Tequila [Member]
Disaggregation of Revenue [Line Items]
Net sales	[2]	299	275	263
Wine [Member]
Disaggregation of Revenue [Line Items]
Net sales	[3]	206	186	187
Vodka [Member]
Disaggregation of Revenue [Line Items]
Net sales	[4]	90	109	126
Rest of portfolio [Member]
Disaggregation of Revenue [Line Items]
Net sales		64	47	46
Non-branded and bulk [Member]
Disaggregation of Revenue [Line Items]
Net sales	[5]	$ 58	$ 75	$ 107

[1] Includes all whiskey spirits and whiskey-based flavored liqueurs, ready-to-drink, and ready-to-pour products. The brands included in this category are the Jack Daniel's family of brands, the Woodford Reserve family of brands, the Old Forester family of brands, GlenDronach, Benriach, Glenglassaugh, Slane Irish Whiskey, and Coopers' Craft. Also includes the Early Times, Canadian Mist, and Collingwood brands, which we divested on July 31, 2020 (Note 12).

[2] Includes el Jimador, the Herradura family of brands, New Mix, Pepe Lopez, and Antiguo.

[3] Includes Korbel Champagne and Sonoma-Cutrer wines.

[4] Includes Finlandia.

[5] Includes net sales of used barrels, bulk whiskey and wine, and contract bottling regardless of customer location.