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RESTRUCTURING ACTIVITIES - Schedule of restructuring plan expenses (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended		81 Months Ended
	Feb. 23, 2025	Feb. 22, 2026	Feb. 23, 2025	Feb. 22, 2026
RESTRUCTURING ACTIVITIES
Restructuring plan charges		$ 10.7
Balance		17.4
Costs incurred and charged to expense		22.1
Costs Paid or Otherwise Settled		(18.5)
Changes in Estimates		(1.4)
Balance		19.6		$ 19.6
Corporate, Non-Segment
RESTRUCTURING ACTIVITIES
Restructuring plan charges		10.9
Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan expected cost		357.6		357.6
Restructuring plan charges	$ 6.9	10.7	$ 90.7	331.9
Asset impairment (net of gains on disposal)		(8.4)
Conagra Restructuring Plan \| Corporate, Non-Segment
RESTRUCTURING ACTIVITIES
Asset impairment (net of gains on disposal)		(0.4)
Accelerated depreciation \| Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan charges		0.4
Accelerated depreciation \| Conagra Restructuring Plan \| Corporate, Non-Segment
RESTRUCTURING ACTIVITIES
Restructuring plan charges		0.0
Other cost of goods sold \| Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan charges		1.8
Other cost of goods sold \| Conagra Restructuring Plan \| Corporate, Non-Segment
RESTRUCTURING ACTIVITIES
Restructuring plan charges		0.0
Total cost of goods sold \| Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan charges		2.2
Total cost of goods sold \| Conagra Restructuring Plan \| Corporate, Non-Segment
RESTRUCTURING ACTIVITIES
Restructuring plan charges		0.0
Severance and related costs
RESTRUCTURING ACTIVITIES
Balance		14.6
Costs incurred and charged to expense		11.2
Costs Paid or Otherwise Settled		(9.6)
Changes in Estimates		(1.4)
Balance		14.8		14.8
Severance and related costs \| Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan charges		8.2
Severance and related costs \| Conagra Restructuring Plan \| Corporate, Non-Segment
RESTRUCTURING ACTIVITIES
Restructuring plan charges		8.0
Contract/lease termination
RESTRUCTURING ACTIVITIES
Costs incurred and charged to expense		0.7
Costs Paid or Otherwise Settled		(0.2)
Balance		0.5		0.5
Contract/lease termination \| Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan charges		0.7
Contract/lease termination \| Conagra Restructuring Plan \| Corporate, Non-Segment
RESTRUCTURING ACTIVITIES
Restructuring plan charges		0.2
Consulting/professional fees
RESTRUCTURING ACTIVITIES
Costs incurred and charged to expense		2.9
Costs Paid or Otherwise Settled		(0.6)
Balance		2.3		2.3
Consulting/professional fees \| Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan expected cost		2.9		2.9
Consulting/professional fees \| Conagra Restructuring Plan \| Corporate, Non-Segment
RESTRUCTURING ACTIVITIES
Restructuring plan expected cost		2.9		2.9
Other costs
RESTRUCTURING ACTIVITIES
Balance		2.8
Costs incurred and charged to expense		7.3
Costs Paid or Otherwise Settled		(8.1)
Balance		2.0		$ 2.0
Other SG&A \| Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan charges		5.1
Other SG&A \| Conagra Restructuring Plan \| Corporate, Non-Segment
RESTRUCTURING ACTIVITIES
Restructuring plan charges		0.2
Total SG&A \| Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan charges		8.5
Total SG&A \| Conagra Restructuring Plan \| Corporate, Non-Segment
RESTRUCTURING ACTIVITIES
Restructuring plan charges		10.9
Grocery & Snacks \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		6.2
Grocery & Snacks \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Asset impairment (net of gains on disposal)		(0.7)
Grocery & Snacks \| Accelerated depreciation \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		0.4
Grocery & Snacks \| Other cost of goods sold \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		1.7
Grocery & Snacks \| Total cost of goods sold \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		2.1
Grocery & Snacks \| Severance and related costs \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		(0.1)
Grocery & Snacks \| Contract/lease termination \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		0.5
Grocery & Snacks \| Other SG&A \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		4.4
Grocery & Snacks \| Total SG&A \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		4.1
Refrigerated & Frozen \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		(6.7)
Refrigerated & Frozen \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Asset impairment (net of gains on disposal)		(7.3)
Refrigerated & Frozen \| Accelerated depreciation \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		0.0
Refrigerated & Frozen \| Other cost of goods sold \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		0.1
Refrigerated & Frozen \| Total cost of goods sold \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		0.1
Refrigerated & Frozen \| Severance and related costs \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		0.0
Refrigerated & Frozen \| Contract/lease termination \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		0.0
Refrigerated & Frozen \| Other SG&A \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		0.5
Refrigerated & Frozen \| Total SG&A \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		(6.8)
International \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		0.3
International \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Asset impairment (net of gains on disposal)		0.0
International \| Accelerated depreciation \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		0.0
International \| Other cost of goods sold \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		0.0
International \| Total cost of goods sold \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		0.0
International \| Severance and related costs \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		0.3
International \| Contract/lease termination \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		0.0
International \| Other SG&A \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		0.0
International \| Total SG&A \| Conagra Restructuring Plan \| Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges		$ 0.3