Special Project Costs (Details Textual) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	21 Months Ended
	Jan. 31, 2025	Jan. 31, 2025	Jan. 31, 2025	Apr. 30, 2024
Hostess Brands
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred to date	$ 182.3	$ 182.3	$ 182.3
Restructuring and related cost, incurred cost	7.8	34.9
Restructuring and related cost, expected cost	210.0	210.0	210.0
Restructuring and related cost, noncash charge incurred to date	16.4	16.4	16.4
Restructuring and related cost, incurred noncash charge	1.7	13.2
Hostess Brands | Employee-related costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred to date	42.9	42.9	42.9
Restructuring and related cost, incurred cost	2.5	9.5
Restructuring reserve	10.8	10.8	10.8	$ 28.0
Hostess Brands | Other transition and termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred to date	40.4	40.4	40.4
Restructuring and related cost, incurred cost	5.3	25.4
Sahale Snacks and Canada Condiment Divestitures
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred to date	7.2	7.2	7.2
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	1.3	1.7
Restructuring reserve				$ 2.5
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	2.9	2.9	2.9
Pet Food Brands [Member] | Other transition and termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost	2.1	3.0	3.1
Restructuring and related cost, expected cost	$ 12.0	$ 12.0	$ 12.0