RESTRUCTURING ACTIVITIES (Consolidated Amounts) (Details) - USD ($) $ in Millions	12 Months Ended
	May. 31, 2015	May. 25, 2014
SCAE Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	$ 267.3
Restructuring and related cost, incurred cost	85.2
Restructured and related cost incurred to date	197.3
SCAE Plan | Multi-employer pension costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	12.9
Restructuring and related cost, incurred cost	1.7
Restructured and related cost incurred to date	12.9
SCAE Plan | Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	57.2
Restructuring and related cost, incurred cost	26.5
Restructured and related cost incurred to date	44.0
SCAE Plan | Other cost of goods sold
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	10.4
Restructuring and related cost, incurred cost	4.0
Restructured and related cost incurred to date	5.4
SCAE Plan | Total cost of goods sold
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	80.5
Restructuring and related cost, incurred cost	32.2
Restructured and related cost incurred to date	62.3
SCAE Plan | Severance and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	91.8
Restructuring and related cost, incurred cost	15.0
Restructured and related cost incurred to date	84.0
SCAE Plan | Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	2.9
Restructuring and related cost, incurred cost	1.8
Restructured and related cost incurred to date	2.4
SCAE Plan | Fixed asset impairment / Loss on disposal
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	24.1
Restructuring and related cost, incurred cost	18.2
Restructured and related cost incurred to date	22.4
SCAE Plan | Other selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	68.0
Restructuring and related cost, incurred cost	18.0
Restructured and related cost incurred to date	26.2
SCAE Plan | Total selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	186.8
Restructuring and related cost, incurred cost	53.0
Restructured and related cost incurred to date	135.0
SCAE Plan | Consumer Foods
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	84.8
Restructuring and related cost, incurred cost	35.1
Restructured and related cost incurred to date	51.3
SCAE Plan | Consumer Foods | Multi-employer pension costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	1.5
Restructuring and related cost, incurred cost	1.5
Restructured and related cost incurred to date	1.5
SCAE Plan | Consumer Foods | Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	31.2
Restructuring and related cost, incurred cost	19.1
Restructured and related cost incurred to date	21.5
SCAE Plan | Consumer Foods | Other cost of goods sold
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	6.3
Restructuring and related cost, incurred cost	1.2
Restructured and related cost incurred to date	2.0
SCAE Plan | Consumer Foods | Total cost of goods sold
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	39.0
Restructuring and related cost, incurred cost	21.8
Restructured and related cost incurred to date	25.0
SCAE Plan | Consumer Foods | Severance and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	25.3
Restructuring and related cost, incurred cost	8.3
Restructured and related cost incurred to date	21.0
SCAE Plan | Consumer Foods | Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	0.0
Restructuring and related cost, incurred cost	0.0
Restructured and related cost incurred to date	0.0
SCAE Plan | Consumer Foods | Fixed asset impairment / Loss on disposal
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	2.6
Restructuring and related cost, incurred cost	0.6
Restructured and related cost incurred to date	0.9
SCAE Plan | Consumer Foods | Other selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	17.9
Restructuring and related cost, incurred cost	4.4
Restructured and related cost incurred to date	4.4
SCAE Plan | Consumer Foods | Total selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	45.8
Restructuring and related cost, incurred cost	13.3
Restructured and related cost incurred to date	26.3
SCAE Plan | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	93.7
Restructuring and related cost, incurred cost	10.8
Restructured and related cost incurred to date	68.4
SCAE Plan | Corporate | Multi-employer pension costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	11.4
Restructuring and related cost, incurred cost	0.2
Restructured and related cost incurred to date	11.4
SCAE Plan | Corporate | Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	0.0
Restructuring and related cost, incurred cost	0.0
Restructured and related cost incurred to date	0.0
SCAE Plan | Corporate | Other cost of goods sold
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	0.0
Restructuring and related cost, incurred cost	0.0
Restructured and related cost incurred to date	0.0
SCAE Plan | Corporate | Total cost of goods sold
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	11.4
Restructuring and related cost, incurred cost	0.2
Restructured and related cost incurred to date	11.4
SCAE Plan | Corporate | Severance and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	45.2
Restructuring and related cost, incurred cost	1.5
Restructured and related cost incurred to date	44.1
SCAE Plan | Corporate | Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	2.9
Restructuring and related cost, incurred cost	1.8
Restructured and related cost incurred to date	2.4
SCAE Plan | Corporate | Fixed asset impairment / Loss on disposal
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	0.4
Restructuring and related cost, incurred cost	0.4
Restructured and related cost incurred to date	0.4
SCAE Plan | Corporate | Other selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	33.8
Restructuring and related cost, incurred cost	6.9
Restructured and related cost incurred to date	10.1
SCAE Plan | Corporate | Total selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	82.3
Restructuring and related cost, incurred cost	10.6
Restructured and related cost incurred to date	57.0
SCAE Plan | Commercial Foods
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	8.0
Restructuring and related cost, incurred cost	3.2
Restructured and related cost incurred to date	8.0
SCAE Plan | Commercial Foods | Multi-employer pension costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	0.0
Restructuring and related cost, incurred cost	0.0
Restructured and related cost incurred to date	0.0
SCAE Plan | Commercial Foods | Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	0.0
Restructuring and related cost, incurred cost	0.0
Restructured and related cost incurred to date	0.0
SCAE Plan | Commercial Foods | Other cost of goods sold
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	0.0
Restructuring and related cost, incurred cost	0.0
Restructured and related cost incurred to date	0.0
SCAE Plan | Commercial Foods | Total cost of goods sold
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	0.0
Restructuring and related cost, incurred cost	0.0
Restructured and related cost incurred to date	0.0
SCAE Plan | Commercial Foods | Severance and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	8.0
Restructuring and related cost, incurred cost	3.2
Restructured and related cost incurred to date	8.0
SCAE Plan | Commercial Foods | Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	0.0
Restructuring and related cost, incurred cost	0.0
Restructured and related cost incurred to date	0.0
SCAE Plan | Commercial Foods | Fixed asset impairment / Loss on disposal
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	0.0
Restructuring and related cost, incurred cost	0.0
Restructured and related cost incurred to date	0.0
SCAE Plan | Commercial Foods | Other selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	0.0
Restructuring and related cost, incurred cost	0.0
Restructured and related cost incurred to date	0.0
SCAE Plan | Commercial Foods | Total selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	8.0
Restructuring and related cost, incurred cost	3.2
Restructured and related cost incurred to date	8.0
SCAE Plan | Private Brands
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	80.8
Restructuring and related cost, incurred cost	36.1
Restructured and related cost incurred to date	69.6
SCAE Plan | Private Brands | Multi-employer pension costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	0.0
Restructuring and related cost, incurred cost	0.0
Restructured and related cost incurred to date	0.0
SCAE Plan | Private Brands | Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	26.0
Restructuring and related cost, incurred cost	7.4
Restructured and related cost incurred to date	22.5
SCAE Plan | Private Brands | Other cost of goods sold
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	4.1
Restructuring and related cost, incurred cost	2.8
Restructured and related cost incurred to date	3.4
SCAE Plan | Private Brands | Total cost of goods sold
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	30.1
Restructuring and related cost, incurred cost	10.2
Restructured and related cost incurred to date	25.9
SCAE Plan | Private Brands | Severance and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	13.3
Restructuring and related cost, incurred cost	2.0
Restructured and related cost incurred to date	10.9
SCAE Plan | Private Brands | Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	0.0
Restructuring and related cost, incurred cost	0.0
Restructured and related cost incurred to date	0.0
SCAE Plan | Private Brands | Fixed asset impairment / Loss on disposal
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	21.1
Restructuring and related cost, incurred cost	17.2
Restructured and related cost incurred to date	21.1
SCAE Plan | Private Brands | Other selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	16.3
Restructuring and related cost, incurred cost	6.7
Restructured and related cost incurred to date	11.7
SCAE Plan | Private Brands | Total selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	50.7
Restructuring and related cost, incurred cost	25.9
Restructured and related cost incurred to date	43.7
Acquisition-Related Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	23.7
Restructured and related cost incurred to date	23.7
Acquisition-Related Restructuring | Severance and related costs
Restructuring Cost and Reserve [Line Items]
Restructured and related cost incurred to date	9.0
Acquisition-Related Restructuring | Fixed asset impairment / Loss on disposal
Restructuring Cost and Reserve [Line Items]
Restructured and related cost incurred to date	7.9
Acquisition-Related Restructuring | Other selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructured and related cost incurred to date	6.8
Acquisition-Related Restructuring | Total selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructured and related cost incurred to date	23.7
Acquisition-Related Restructuring | Consumer Foods
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost	0.3	$ 9.4
Restructured and related cost incurred to date	21.2
Acquisition-Related Restructuring | Consumer Foods | Severance and related costs
Restructuring Cost and Reserve [Line Items]
Restructured and related cost incurred to date	9.0
Acquisition-Related Restructuring | Consumer Foods | Fixed asset impairment / Loss on disposal
Restructuring Cost and Reserve [Line Items]
Restructured and related cost incurred to date	5.4
Acquisition-Related Restructuring | Consumer Foods | Other selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructured and related cost incurred to date	6.8
Acquisition-Related Restructuring | Consumer Foods | Total selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructured and related cost incurred to date	21.2
Acquisition-Related Restructuring | Corporate
Restructuring Cost and Reserve [Line Items]
Restructured and related cost incurred to date	2.5
Acquisition-Related Restructuring | Corporate | Severance and related costs
Restructuring Cost and Reserve [Line Items]
Restructured and related cost incurred to date	0.0
Acquisition-Related Restructuring | Corporate | Fixed asset impairment / Loss on disposal
Restructuring Cost and Reserve [Line Items]
Restructured and related cost incurred to date	2.5
Acquisition-Related Restructuring | Corporate | Other selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructured and related cost incurred to date	0.0
Acquisition-Related Restructuring | Corporate | Total selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructured and related cost incurred to date	$ 2.5