RESTRUCTURING ACTIVITIES - Schedule of restructuring plan expenses (Details) - USD ($) $ in Millions	3 Months Ended		79 Months Ended
	Aug. 25, 2024	Aug. 27, 2023	Dec. 31, 2024
RESTRUCTURING ACTIVITIES
Restructuring plan charges	$ 4.3
Corporate, Non-Segment
RESTRUCTURING ACTIVITIES
Restructuring plan charges	0.1
Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan charges	4.3	$ 23.8	$ 223.8
Balance	10.4
Costs Incurred and Charged to Expense	3.3
Costs Paid or Otherwise Settled	(8.3)
Changes in Estimates	(0.7)
Balance	4.7
Accelerated depreciation | Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan charges	1.4
Other cost of goods sold | Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan charges	0.7
Total cost of goods sold | Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan charges	2.1
Severance and related costs | Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan charges	(0.5)
Balance	9.8
Costs Incurred and Charged to Expense	0.2
Costs Paid or Otherwise Settled	(5.7)
Changes in Estimates	(0.7)
Balance	3.6
Contract/lease termination | Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan charges	0.8
Costs Incurred and Charged to Expense	0.8
Costs Paid or Otherwise Settled	(0.8)
Other costs | Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Balance	0.6
Costs Incurred and Charged to Expense	2.3
Costs Paid or Otherwise Settled	(1.8)
Balance	1.1
Other SG&A | Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan charges	1.9
Other SG&A | Conagra Restructuring Plan | Corporate, Non-Segment
RESTRUCTURING ACTIVITIES
Restructuring plan charges	0.1
Total SG&A | Conagra Restructuring Plan
RESTRUCTURING ACTIVITIES
Restructuring plan charges	2.2
Total SG&A | Conagra Restructuring Plan | Corporate, Non-Segment
RESTRUCTURING ACTIVITIES
Restructuring plan charges	0.1
Grocery & Snacks | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	4.2
Grocery & Snacks | Accelerated depreciation | Conagra Restructuring Plan | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	1.4
Grocery & Snacks | Other cost of goods sold | Conagra Restructuring Plan | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	1.1
Grocery & Snacks | Total cost of goods sold | Conagra Restructuring Plan | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	2.5
Grocery & Snacks | Contract/lease termination | Conagra Restructuring Plan | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	0.7
Grocery & Snacks | Other SG&A | Conagra Restructuring Plan | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	1.0
Grocery & Snacks | Total SG&A | Conagra Restructuring Plan | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	1.7
Refrigerated & Frozen | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	0.1
Refrigerated & Frozen | Other cost of goods sold | Conagra Restructuring Plan | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	(0.2)
Refrigerated & Frozen | Total cost of goods sold | Conagra Restructuring Plan | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	(0.2)
Refrigerated & Frozen | Severance and related costs | Conagra Restructuring Plan | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	(0.2)
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	0.3
International | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	(0.1)
International | Other cost of goods sold | Conagra Restructuring Plan | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	(0.2)
International | Total cost of goods sold | Conagra Restructuring Plan | Operating Segments
RESTRUCTURING ACTIVITIES
Restructuring plan charges	(0.2)
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	0.1
International | Other SG&A | 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	$ 0.1