Net Sales by Product Category (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021		Oct. 31, 2020
Disaggregation of Revenue [Line Items]
Net sales	$ 994	$ 985	$ 1,900		$ 1,738
Whiskey [Member]
Disaggregation of Revenue [Line Items]
Net sales	767	775	1,474	[1]	1,370	[1]
Tequila [Member]
Disaggregation of Revenue [Line Items]
Net sales	86	84	176	[2]	152	[2]
Vodka [Member]
Disaggregation of Revenue [Line Items]
Net sales	69	71	122	[3]	112	[3]
Wine [Member]
Disaggregation of Revenue [Line Items]
Net sales	32	26	57	[4]	45	[4]
Non-branded and bulk [Member]
Disaggregation of Revenue [Line Items]
Net sales	20	15	36	[5]	30	[5]
Rest of portfolio [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 20	$ 14	$ 35		$ 29

[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.