RESTRUCTURING ACTIVITIES - Schedule of Restructuring and Related Costs (Details) - SCAE Plan - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 27, 2016	Nov. 29, 2015	Nov. 27, 2016	Nov. 29, 2015
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	$ 432.8		$ 432.8
Recognized pre-tax expenses	19.8	$ 133.0	33.9	$ 150.4
Cumulative pre-tax expenses	392.6		392.6
Corporate
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	262.9		262.9
Recognized pre-tax expenses	15.8		18.0
Cumulative pre-tax expenses	243.2		243.2
Grocery & Snacks | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	114.3		114.3
Recognized pre-tax expenses	1.4		6.3
Cumulative pre-tax expenses	94.0		94.0
Refrigerated & Frozen | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	45.2		45.2
Recognized pre-tax expenses	2.2		7.2
Cumulative pre-tax expenses	44.6		44.6
International | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	2.5		2.5
Recognized pre-tax expenses	0.4		0.6
Cumulative pre-tax expenses	2.9		2.9
Foodservice | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	7.9		7.9
Recognized pre-tax expenses	0.0		1.8
Cumulative pre-tax expenses	7.9		7.9
Total cost of goods sold
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	95.3		95.3
Recognized pre-tax expenses	1.8		7.0
Cumulative pre-tax expenses	82.1		82.1
Total cost of goods sold | Corporate
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	1.2		1.2
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	1.2		1.2
Total cost of goods sold | Grocery & Snacks | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	71.9		71.9
Recognized pre-tax expenses	1.8		5.6
Cumulative pre-tax expenses	58.7		58.7
Total cost of goods sold | Refrigerated & Frozen | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	22.2		22.2
Recognized pre-tax expenses	0.0		1.4
Cumulative pre-tax expenses	22.2		22.2
Total cost of goods sold | International | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.0		0.0
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.0		0.0
Total cost of goods sold | Foodservice | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.0		0.0
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.0		0.0
Multi-employer pension costs
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	31.3		31.3
Cumulative pre-tax expenses	31.3		31.3
Multi-employer pension costs | Corporate
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.0		0.0
Multi-employer pension costs | Grocery & Snacks | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	29.8		29.8
Cumulative pre-tax expenses	29.8		29.8
Multi-employer pension costs | Refrigerated & Frozen | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	1.5		1.5
Cumulative pre-tax expenses	1.5		1.5
Multi-employer pension costs | International | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.0		0.0
Multi-employer pension costs | Foodservice | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.0		0.0
Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	56.4		56.4
Recognized pre-tax expenses	1.9		4.9
Cumulative pre-tax expenses	44.9		44.9
Accelerated depreciation | Corporate
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	1.2		1.2
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	1.2		1.2
Accelerated depreciation | Grocery & Snacks | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	36.6		36.6
Recognized pre-tax expenses	1.9		3.7
Cumulative pre-tax expenses	25.1		25.1
Accelerated depreciation | Refrigerated & Frozen | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	18.6		18.6
Recognized pre-tax expenses	0.0		1.2
Cumulative pre-tax expenses	18.6		18.6
Accelerated depreciation | International | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.0		0.0
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.0		0.0
Accelerated depreciation | Foodservice | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.0		0.0
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.0		0.0
Other cost of goods sold
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	7.6		7.6
Recognized pre-tax expenses	(0.1)		2.1
Cumulative pre-tax expenses	5.9		5.9
Other cost of goods sold | Corporate
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.0		0.0
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.0		0.0
Other cost of goods sold | Grocery & Snacks | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	5.5		5.5
Recognized pre-tax expenses	(0.1)		1.9
Cumulative pre-tax expenses	3.8		3.8
Other cost of goods sold | Refrigerated & Frozen | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	2.1		2.1
Recognized pre-tax expenses	0.0		0.2
Cumulative pre-tax expenses	2.1		2.1
Other cost of goods sold | International | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.0		0.0
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.0		0.0
Other cost of goods sold | Foodservice | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.0		0.0
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.0		0.0
Total selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	337.5		337.5
Recognized pre-tax expenses	18.0		26.9
Cumulative pre-tax expenses	310.5		310.5
Total selling, general and administrative expenses | Corporate
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	261.7		261.7
Recognized pre-tax expenses	15.8		18.0
Cumulative pre-tax expenses	242.0		242.0
Total selling, general and administrative expenses | Grocery & Snacks | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	42.4		42.4
Recognized pre-tax expenses	(0.4)		0.7
Cumulative pre-tax expenses	35.3		35.3
Total selling, general and administrative expenses | Refrigerated & Frozen | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	23.0		23.0
Recognized pre-tax expenses	2.2		5.8
Cumulative pre-tax expenses	22.4		22.4
Total selling, general and administrative expenses | International | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	2.5		2.5
Recognized pre-tax expenses	0.4		0.6
Cumulative pre-tax expenses	2.9		2.9
Total selling, general and administrative expenses | Foodservice | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	7.9		7.9
Recognized pre-tax expenses	0.0		1.8
Cumulative pre-tax expenses	7.9		7.9
Severance and related costs, net
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	142.0		142.0
Recognized pre-tax expenses	3.0		4.8
Cumulative pre-tax expenses	140.6		140.6
Severance and related costs, net | Corporate
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	98.9		98.9
Recognized pre-tax expenses	2.1		2.1
Cumulative pre-tax expenses	98.5		98.5
Severance and related costs, net | Grocery & Snacks | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	22.4		22.4
Recognized pre-tax expenses	0.8		0.6
Cumulative pre-tax expenses	21.2		21.2
Severance and related costs, net | Refrigerated & Frozen | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	10.4		10.4
Recognized pre-tax expenses	(0.2)		(0.2)
Cumulative pre-tax expenses	10.3		10.3
Severance and related costs, net | International | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	2.4		2.4
Recognized pre-tax expenses	0.3		0.5
Cumulative pre-tax expenses	2.7		2.7
Severance and related costs, net | Foodservice | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	7.9		7.9
Recognized pre-tax expenses	0.0		1.8
Cumulative pre-tax expenses	7.9		7.9
Fixed asset impairment (Net of gains on disposal)
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	19.5		19.5
Recognized pre-tax expenses	2.2		5.4
Cumulative pre-tax expenses	17.0		17.0
Fixed asset impairment (Net of gains on disposal) | Corporate
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	4.4		4.4
Recognized pre-tax expenses	2.9		2.9
Cumulative pre-tax expenses	3.7		3.7
Fixed asset impairment (Net of gains on disposal) | Grocery & Snacks | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	6.9		6.9
Recognized pre-tax expenses	(2.7)		(2.1)
Cumulative pre-tax expenses	5.1		5.1
Fixed asset impairment (Net of gains on disposal) | Refrigerated & Frozen | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	8.2		8.2
Recognized pre-tax expenses	2.0		4.6
Cumulative pre-tax expenses	8.2		8.2
Fixed asset impairment (Net of gains on disposal) | International | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.0		0.0
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.0		0.0
Fixed asset impairment (Net of gains on disposal) | Foodservice | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.0		0.0
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.0		0.0
Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	1.8		1.8
Recognized pre-tax expenses	0.3		0.5
Cumulative pre-tax expenses	1.8		1.8
Accelerated depreciation | Corporate
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	1.8		1.8
Recognized pre-tax expenses	0.3		0.5
Cumulative pre-tax expenses	1.8		1.8
Accelerated depreciation | Grocery & Snacks | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.0		0.0
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.0		0.0
Accelerated depreciation | Refrigerated & Frozen | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.0		0.0
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.0		0.0
Accelerated depreciation | International | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.0		0.0
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.0		0.0
Accelerated depreciation | Foodservice | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.0		0.0
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.0		0.0
Contract/Lease cancellation expenses
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	75.2		75.2
Recognized pre-tax expenses	9.0		7.5
Cumulative pre-tax expenses	70.5		70.5
Contract/Lease cancellation expenses | Corporate
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	73.8		73.8
Recognized pre-tax expenses	8.9		7.4
Cumulative pre-tax expenses	69.1		69.1
Contract/Lease cancellation expenses | Grocery & Snacks | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.9		0.9
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.8		0.8
Contract/Lease cancellation expenses | Refrigerated & Frozen | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.5		0.5
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.5		0.5
Contract/Lease cancellation expenses | International | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.0		0.0
Recognized pre-tax expenses	0.1		0.1
Cumulative pre-tax expenses	0.1		0.1
Contract/Lease cancellation expenses | Foodservice | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.0		0.0
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.0		0.0
Consulting/Professional fees
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	53.1		53.1
Recognized pre-tax expenses	0.2		0.3
Cumulative pre-tax expenses	52.2		52.2
Consulting/Professional fees | Corporate
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	52.0		52.0
Recognized pre-tax expenses	0.2		0.3
Cumulative pre-tax expenses	51.1		51.1
Consulting/Professional fees | Grocery & Snacks | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.6		0.6
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.6		0.6
Consulting/Professional fees | Refrigerated & Frozen | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.4		0.4
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.4		0.4
Consulting/Professional fees | International | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.1		0.1
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.1		0.1
Consulting/Professional fees | Foodservice | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.0		0.0
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.0		0.0
Other selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	45.9		45.9
Recognized pre-tax expenses	3.3		8.4
Cumulative pre-tax expenses	28.4		28.4
Other selling, general and administrative expenses | Corporate
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	30.8		30.8
Recognized pre-tax expenses	1.4		4.8
Cumulative pre-tax expenses	17.8		17.8
Other selling, general and administrative expenses | Grocery & Snacks | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	11.6		11.6
Recognized pre-tax expenses	1.5		2.2
Cumulative pre-tax expenses	7.6		7.6
Other selling, general and administrative expenses | Refrigerated & Frozen | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	3.5		3.5
Recognized pre-tax expenses	0.4		1.4
Cumulative pre-tax expenses	3.0		3.0
Other selling, general and administrative expenses | International | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.0		0.0
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	0.0		0.0
Other selling, general and administrative expenses | Foodservice | Reporting segments
Restructuring Cost and Reserve [Line Items]
Anticipated pre-tax expenses	0.0		0.0
Recognized pre-tax expenses	0.0		0.0
Cumulative pre-tax expenses	$ 0.0		$ 0.0