Reportable Segments (Details 1) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024	Apr. 30, 2025
Geographical information [Line Items]
Assets		$ 17,628.3		$ 17,628.3		$ 17,563.3
Net sales		2,330.1	$ 2,271.2	4,443.4	$ 4,396.3
Depreciation Amortization and Impairment Charges		143.3	128.0	278.5	257.0
Additions to property, plant, and equipment		66.3	87.0	150.6	210.7
Segment Reporting, Reconciling Item, Corporate Nonsegment
Geographical information [Line Items]
Assets	[1]	212.6		212.6		261.1
Depreciation Amortization and Impairment Charges	[2]	31.1	15.5	54.4	30.6
U.S. Retail Coffee
Geographical information [Line Items]
Net sales		848.9	704.0	1,566.1	1,327.4
U.S. Retail Coffee | Operating Segments
Geographical information [Line Items]
Assets		4,857.5		4,857.5		4,927.8
Depreciation Amortization and Impairment Charges		24.3	24.4	48.7	48.8
Additions to property, plant, and equipment		7.3	7.2	18.8	30.6
U.S. Retail Frozen Handheld and Spreads
Geographical information [Line Items]
Net sales		461.1	485.2	945.8	982.0
U.S. Retail Frozen Handheld and Spreads | Operating Segments
Geographical information [Line Items]
Assets		3,288.9		3,288.9		3,263.1
Depreciation Amortization and Impairment Charges		24.9	20.5	50.0	41.1
Additions to property, plant, and equipment		18.7	36.7	58.8	85.5
U.S. Retail Pet Foods
Geographical information [Line Items]
Net sales		413.2	445.4	781.2	845.1
U.S. Retail Pet Foods | Operating Segments
Geographical information [Line Items]
Assets		4,687.2		4,687.2		4,679.3
Depreciation Amortization and Impairment Charges		30.6	29.8	60.9	59.8
Additions to property, plant, and equipment		10.1	19.9	21.5	44.1
Sweet Baked Snacks
Geographical information [Line Items]
Net sales		256.1	315.5	509.3	649.2
Sweet Baked Snacks | Operating Segments
Geographical information [Line Items]
Assets		3,343.9		3,343.9		3,394.9
Depreciation Amortization and Impairment Charges		22.4	29.0	44.3	58.9
Additions to property, plant, and equipment		18.8	13.5	29.0	26.7
International and Away From Home
Geographical information [Line Items]
Net sales		350.8	321.1	641.0	592.6
International and Away From Home | Operating Segments
Geographical information [Line Items]
Assets		1,238.2		1,238.2		$ 1,037.1
Depreciation Amortization and Impairment Charges		10.0	8.8	20.2	17.8
Additions to property, plant, and equipment		11.4	9.7	22.5	23.8
United States
Geographical information [Line Items]
Net sales		2,202.4	2,136.2	4,211.8	4,151.6
Total international
Geographical information [Line Items]
Net sales		127.7	135.0	231.6	244.7
Canada
Geographical information [Line Items]
Net sales		94.5	100.7	165.2	182.1
All other international
Geographical information [Line Items]
Net sales		$ 33.2	$ 34.3	$ 66.4	$ 62.6

[1] Primarily represents unallocated cash and cash equivalents and corporate-held investments.

[2] Primarily represents unallocated accelerated depreciation related to restructuring activities and corporate administrative expenses, mainly consisting of depreciation and software amortization.