Reportable Segments (Details) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
		Oct. 31, 2025		Oct. 31, 2024	Oct. 31, 2025		Oct. 31, 2024
Segment Reporting Information [Line Items]
Net sales		$ 2,330.1		$ 2,271.2	$ 4,443.4		$ 4,396.3
Segment selling and distribution expenses		398.2		390.7	775.6		780.8
Segment profit		479.0		578.8	928.5		1,108.7
Amortization		(50.2)		(55.8)	(100.4)		(111.8)
Interest expense – net		(98.6)		(98.7)	(198.8)		(199.1)
Change in net cumulative unallocated derivative gains and losses		103.0		11.7	(150.1)		(18.3)
Costs of products sold – special project costs	[1]	(23.0)		(5.3)	(38.4)		(10.6)
Other special project costs	[1],[2]	(5.6)		(10.7)	(11.6)		(17.8)
Corporate administrative expenses		(84.7)		(88.2)	(163.9)		(170.2)
Other income (expense) – net	[2]	(1.5)	[1]	(4.2)	(3.4)	[1]	(7.3)
Income Before Income Taxes		318.4		66.8	261.9		312.8
Loss (gain) on divestitures – net		0.0		(260.8)	0.0		(260.8)
U.S. Retail Coffee
Segment Reporting Information [Line Items]
Net sales		848.9		704.0	1,566.1		1,327.4
Segment cost of products sold	[3]	602.1		422.8	1,101.0		795.7
Segment selling and distribution expenses	[4]	92.1		78.0	176.1		155.8
Other segment items	[5]	0.4		0.5	0.5		0.6
Segment profit		154.3		202.7	288.5		375.3
U.S. Retail Frozen Handheld and Spreads
Segment Reporting Information [Line Items]
Net sales		461.1		485.2	945.8		982.0
Segment cost of products sold	[3]	286.4		296.3	585.7		603.5
Segment selling and distribution expenses	[4]	71.9		71.9	142.7		142.5
Other segment items	[5]	0.7		0.9	1.0		0.9
Segment profit		102.1		116.1	216.4		235.1
U.S. Retail Pet Foods
Segment Reporting Information [Line Items]
Net sales		413.2		445.4	781.2		845.1
Segment cost of products sold	[3]	224.5		257.9	429.3		476.6
Segment selling and distribution expenses	[4]	67.8		67.8	134.6		137.7
Other segment items	[5]	(3.5)		(1.7)	(8.4)		(5.9)
Segment profit		124.4		121.4	225.7		236.7
Sweet Baked Snacks
Segment Reporting Information [Line Items]
Net sales		256.1		315.5	509.3		649.2
Segment cost of products sold	[3]	190.3		200.6	367.1		411.0
Segment selling and distribution expenses	[4]	43.2		43.8	84.4		93.4
Other segment items	[5]	0.8		0.5	1.8		(0.2)
Segment profit		21.8		70.6	56.0		145.0
International and Away From Home
Segment Reporting Information [Line Items]
Net sales		350.8		321.1	641.0		592.6
Segment cost of products sold	[3]	236.9		213.9	427.2		397.3
Segment selling and distribution expenses	[4]	38.5		40.9	73.9		81.2
Other segment items	[5]	(1.0)		(1.7)	(2.0)		(2.5)
Segment profit		$ 76.4		$ 68.0	$ 141.9		$ 116.6

[1] Includes special project costs related to certain divestiture, acquisition, integration, and restructuring activities. For more information, see Note 4: Special Project Costs.

[2] Includes certain divestiture, acquisition, integration, and restructuring costs (“special project costs”). For more information, see Note 4: Special Project Costs and Note 5: Reportable Segments.

[3] Segment cost of products sold excludes special project costs related to certain divestiture, acquisition, integration, and restructuring activities and the change in net cumulative unallocated derivative gains and losses. For more information, see Note 4: Special Project Costs and Note 9: Derivative Financial Instruments.

[4] Segment selling and distribution expenses excludes corporate administrative expenses and special project costs that are not allocated to the segments.

[5] Other segment items primarily reflects the loss (gain) on disposal of assets, plant administrative expenses, equity method investment income, and royalty income.