RESTRUCTURING ACTIVITIES (Consolidated Amounts) (Details) (SCAE Plan, USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended	25 Months Ended
	Feb. 22, 2015	Feb. 22, 2015	Feb. 22, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	$ 232.0	$ 232.0	$ 232.0
Restructuring and Related Cost, Incurred Cost	18.3	56.8	168.9
Consumer Foods
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	68.0	68.0	68.0
Restructuring and Related Cost, Incurred Cost	8.2	25.2	41.4
Commercial Foods
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	8.3	8.3	8.3
Restructuring and Related Cost, Incurred Cost	(0.3)	3.5	8.3
Private Brands
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	63.0	63.0	63.0
Restructuring and Related Cost, Incurred Cost	9.2	19.9	53.4
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	92.7	92.7	92.7
Restructuring and Related Cost, Incurred Cost	1.2	8.2	65.8
Multi-employer pension costs
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	11.4	11.4	11.4
Restructuring and Related Cost, Incurred Cost		0.2	11.4
Multi-employer pension costs | Consumer Foods
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	0	0	0
Restructuring and Related Cost, Incurred Cost		0	0
Multi-employer pension costs | Commercial Foods
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	0	0	0
Restructuring and Related Cost, Incurred Cost		0	0
Multi-employer pension costs | Private Brands
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	0	0	0
Restructuring and Related Cost, Incurred Cost		0	0
Multi-employer pension costs | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	11.4	11.4	11.4
Restructuring and Related Cost, Incurred Cost		0.2	11.4
Other cost of goods sold
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	7.8	7.8	7.8
Restructuring and Related Cost, Incurred Cost	0.9	1.5	2.9
Other cost of goods sold | Consumer Foods
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	4.0	4.0	4.0
Restructuring and Related Cost, Incurred Cost	0	0	0.8
Other cost of goods sold | Commercial Foods
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	0	0	0
Restructuring and Related Cost, Incurred Cost	0	0	0
Other cost of goods sold | Private Brands
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	3.8	3.8	3.8
Restructuring and Related Cost, Incurred Cost	0.9	1.5	2.1
Other cost of goods sold | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	0	0	0
Restructuring and Related Cost, Incurred Cost	0	0	0
Total cost of goods sold
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	19.2	19.2	19.2
Restructuring and Related Cost, Incurred Cost	0.9	1.7	14.3
Total cost of goods sold | Consumer Foods
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	4.0	4.0	4.0
Restructuring and Related Cost, Incurred Cost	0	0	0.8
Total cost of goods sold | Commercial Foods
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	0	0	0
Restructuring and Related Cost, Incurred Cost	0	0	0
Total cost of goods sold | Private Brands
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	3.8	3.8	3.8
Restructuring and Related Cost, Incurred Cost	0.9	1.5	2.1
Total cost of goods sold | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	11.4	11.4	11.4
Restructuring and Related Cost, Incurred Cost	0	0.2	11.4
Severance and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	84.7	84.7	84.7
Restructuring and Related Cost, Incurred Cost	5.2	10.9	79.9
Severance and related costs | Consumer Foods
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	22.2	22.2	22.2
Restructuring and Related Cost, Incurred Cost	5.1	6.5	19.2
Severance and related costs | Commercial Foods
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	8.3	8.3	8.3
Restructuring and Related Cost, Incurred Cost	(0.3)	3.5	8.3
Severance and related costs | Private Brands
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	10.2	10.2	10.2
Restructuring and Related Cost, Incurred Cost	0.1	0.6	9.5
Severance and related costs | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	44.0	44.0	44.0
Restructuring and Related Cost, Incurred Cost	0.3	0.3	42.9
Fixed asset impairment
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	14.4	14.4	14.4
Restructuring and Related Cost, Incurred Cost	6.2	8.5	12.7
Fixed asset impairment | Consumer Foods
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	2.6	2.6	2.6
Restructuring and Related Cost, Incurred Cost	0.6	0.6	0.9
Fixed asset impairment | Commercial Foods
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	0	0	0
Restructuring and Related Cost, Incurred Cost	0	0	0
Fixed asset impairment | Private Brands
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	11.4	11.4	11.4
Restructuring and Related Cost, Incurred Cost	5.6	7.5	11.4
Fixed asset impairment | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	0.4	0.4	0.4
Restructuring and Related Cost, Incurred Cost	0	0.4	0.4
Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	54.5	54.5	54.5
Restructuring and Related Cost, Incurred Cost	4.2	22.0	40.1
Accelerated depreciation | Consumer Foods
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	28.6	28.6	28.6
Restructuring and Related Cost, Incurred Cost	1.8	15.7	18.1
Accelerated depreciation | Commercial Foods
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	0	0	0
Restructuring and Related Cost, Incurred Cost	0	0	0
Accelerated depreciation | Private Brands
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	23.0	23.0	23.0
Restructuring and Related Cost, Incurred Cost	2.1	4.7	19.8
Accelerated depreciation | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	2.9	2.9	2.9
Restructuring and Related Cost, Incurred Cost	0.3	1.6	2.2
Other selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	59.2	59.2	59.2
Restructuring and Related Cost, Incurred Cost	1.8	13.7	21.9
Other selling, general and administrative expenses | Consumer Foods
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	10.6	10.6	10.6
Restructuring and Related Cost, Incurred Cost	0.7	2.4	2.4
Other selling, general and administrative expenses | Commercial Foods
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	0	0	0
Restructuring and Related Cost, Incurred Cost	0	0	0
Other selling, general and administrative expenses | Private Brands
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	14.6	14.6	14.6
Restructuring and Related Cost, Incurred Cost	0.5	5.6	10.6
Other selling, general and administrative expenses | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	34.0	34.0	34.0
Restructuring and Related Cost, Incurred Cost	0.6	5.7	8.9
Total selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	212.8	212.8	212.8
Restructuring and Related Cost, Incurred Cost	17.4	55.1	154.6
Total selling, general and administrative expenses | Consumer Foods
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	64.0	64.0	64.0
Restructuring and Related Cost, Incurred Cost	8.2	25.2	40.6
Total selling, general and administrative expenses | Commercial Foods
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	8.3	8.3	8.3
Restructuring and Related Cost, Incurred Cost	(0.3)	3.5	8.3
Total selling, general and administrative expenses | Private Brands
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	59.2	59.2	59.2
Restructuring and Related Cost, Incurred Cost	8.3	18.4	51.3
Total selling, general and administrative expenses | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	81.3	81.3	81.3
Restructuring and Related Cost, Incurred Cost	$ 1.2	$ 8.0	$ 54.4