RESTRUCTURING ACTIVITIES - Schedule of restructuring plan expenses (Details) - USD ($) $ in Millions	3 Months Ended		75 Months Ended
	Aug. 24, 2025	Aug. 25, 2024	Aug. 24, 2025
RESTRUCTURING ACTIVITIES
Restructuring plan charges	$ 4.4
Corporate, Non-Segment
RESTRUCTURING ACTIVITIES
Restructuring plan charges	1.1
Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan expected cost	349.0		$ 349.0
Restructuring plan charges	4.4	$ 4.3	325.6
Asset impairment (net of gains on disposal)	0.8
Balance	17.4
Costs Incurred and Charged to Expense	3.2
Costs Paid or Otherwise Settled	(6.8)
Balance	13.8		13.8
Accelerated depreciation | Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan charges	0.4
Other cost of goods sold | Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan charges	0.3
Total cost of goods sold | Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan charges	0.7
Severance and related costs | Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan charges	1.3
Balance	14.6
Costs Incurred and Charged to Expense	1.3
Costs Paid or Otherwise Settled	(3.9)
Balance	12.0		12.0
Severance and related costs | Conagra Restructuring Plan | Corporate, Non-Segment
RESTRUCTURING ACTIVITIES
Restructuring plan charges	1.0
Contract/lease termination | Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan charges	0.1
Costs Incurred and Charged to Expense	0.1
Costs Paid or Otherwise Settled	(0.1)
Contract/lease termination | Conagra Restructuring Plan | Corporate, Non-Segment
RESTRUCTURING ACTIVITIES
Restructuring plan charges	0.1
Other costs | Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Balance	2.8
Costs Incurred and Charged to Expense	1.8
Costs Paid or Otherwise Settled	(2.8)
Balance	1.8		$ 1.8
Other SG&A | Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan charges	1.5
Total SG&A | Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan charges	3.7
Total SG&A | Conagra Restructuring Plan | Corporate, Non-Segment
RESTRUCTURING ACTIVITIES
Restructuring plan charges	1.1
Grocery & Snacks | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	2.0
Grocery & Snacks | Conagra Restructuring Plan | Operating Segments
RESTRUCTURING ACTIVITIES
Asset impairment (net of gains on disposal)	0.2
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	0.2
Grocery & Snacks | Total cost of goods sold | Conagra Restructuring Plan | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	0.6
Grocery & Snacks | Other SG&A | Conagra Restructuring Plan | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	1.2
Grocery & Snacks | Total SG&A | Conagra Restructuring Plan | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	1.4
Refrigerated & Frozen | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	1.0
Refrigerated & Frozen | Conagra Restructuring Plan | Operating Segments
RESTRUCTURING ACTIVITIES
Asset impairment (net of gains on disposal)	0.6
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 | Other SG&A | Conagra Restructuring Plan | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	0.3
Refrigerated & Frozen | Total SG&A | Conagra Restructuring Plan | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	0.9
International | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	0.3
International | Severance and related costs | Conagra Restructuring Plan | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	0.3
International | Total SG&A | Conagra Restructuring Plan | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	$ 0.3