Net Sales by Product Category (Details) - USD ($) $ in Millions		3 Months Ended
		Jul. 31, 2021	Jul. 31, 2020
Disaggregation of Revenue [Line Items]
Net sales		$ 906	$ 753
Whiskey [Member]
Disaggregation of Revenue [Line Items]
Net sales	[1]	707	595
Tequila [Member]
Disaggregation of Revenue [Line Items]
Net sales	[2]	90	68
Vodka [Member]
Disaggregation of Revenue [Line Items]
Net sales	[3]	53	41
Wine [Member]
Disaggregation of Revenue [Line Items]
Net sales	[4]	25	19
Non-branded and bulk [Member]
Disaggregation of Revenue [Line Items]
Net sales	[5]	16	15
Rest of portfolio [Member]
Disaggregation of Revenue [Line Items]
Net sales		$ 15	$ 15

[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.

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

[3] Includes Finlandia.

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

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