Special Project Costs - Narrative (Details) - USD ($) $ in Millions	12 Months Ended		18 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2025	May 27, 2025
Hostess Brands
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	$ 190.0		$ 190.0
Restructuring and related cost, incurred cost	37.5	$ 147.4
Restructuring and related cost, incurred noncash charge	12.2	3.2	15.4
Total costs incurred to date	184.9		184.9
Sahale Snacks and Condiment Divestitures
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost	0.9	5.5
Total costs incurred to date	6.4		6.4
Indianapolis Bakery Restructuring | Subsequent Event
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost				$ 75.0
Employee-related costs | Hostess Brands
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost	9.6	33.4
Restructuring Reserve	6.2	28.0	6.2
Total costs incurred to date	43.0		43.0
Employee-related costs | Sahale Snacks and Condiment Divestitures
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve		2.5
Total costs incurred to date	4.3		4.3
Other transition and termination costs | Hostess Brands
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost	27.9	15.0
Total costs incurred to date	42.9		42.9
Other transition and termination costs | Sahale Snacks and Condiment Divestitures
Restructuring Cost and Reserve [Line Items]
Total costs incurred to date	2.1		2.1
Other transition and termination costs | Pet Food Brands
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	12.0		12.0
Restructuring and related cost, incurred cost	6.5
Other transition and termination costs | Indianapolis Bakery Restructuring | Subsequent Event
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost				15.0
Transaction Costs | Hostess Brands
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost	0.0	$ 99.0
Total costs incurred to date	$ 99.0		$ 99.0
Accelerated Depreciation Noncash Charges | Indianapolis Bakery Restructuring | Subsequent Event
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost				$ 60.0