Special Project Costs (Details Textual) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		30 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Apr. 30, 2025
Indianapolis Bakery Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred to date	$ 47.9		$ 47.9		$ 47.9
Restructuring and related cost, incurred cost	27.2		47.9
Restructuring and related cost, expected cost	75.0		75.0		75.0
Employee-related costs | Indianapolis Bakery Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred to date	5.8		5.8		5.8
Restructuring and related cost, incurred cost	1.6		5.8
Restructuring reserve	4.4		4.4		4.4
Other transition and termination costs | Indianapolis Bakery Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred to date	42.1		42.1		42.1
Restructuring and related cost, incurred cost	25.6		42.1
Restructuring and related cost, expected cost	15.0		15.0		15.0
Accelerated Depreciation Noncash Charges | Indianapolis Bakery Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost	23.5		38.9
Restructuring and related cost, expected cost	60.0		60.0		60.0
Hostess Brands
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred to date	186.0		186.0		186.0
Restructuring and related cost, incurred cost	0.7	$ 15.1	1.1	$ 27.1
Restructuring and related cost, expected cost	190.0		190.0		190.0
Restructuring and related cost, noncash charge incurred to date	15.9		15.9		15.9
Restructuring and related cost, incurred noncash charge	0.5	5.9	0.5	11.5
Hostess Brands | Employee-related costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred to date	43.4		43.4		43.4
Restructuring and related cost, incurred cost	0.1	4.4	0.4	7.0
Restructuring reserve	2.0		2.0		2.0	$ 6.2
Hostess Brands | Other transition and termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred to date	43.6		43.6		43.6
Restructuring and related cost, incurred cost	0.6	10.7	0.7	20.1
Sahale Snacks and Canada Condiment Divestitures
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred to date	6.4		6.4		6.4
Sahale Snacks and Canada Condiment Divestitures | Employee-related costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred to date	4.3		4.3		4.3
Restructuring and related cost, incurred cost	0.0	0.1	0.0	0.4
Sahale Snacks and Canada Condiment Divestitures | Other transition and termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred to date	2.1		2.1		2.1
Pet Food Brands [Member] | Other transition and termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost	1.6	$ 0.8	1.9	$ 0.9	8.4
Restructuring and related cost, expected cost	$ 12.0		$ 12.0		$ 12.0