PENSION AND POSTRETIREMENT BENEFITS (Details) - USD ($) $ in Millions	12 Months Ended
	May 29, 2016	May 31, 2015	May 25, 2014
Change in Plan Assets
Fair value of plan assets at beginning of year	$ 3,539.0
Investment and administrative expenses	(2,209.4)	$ (1,545.3)	$ (1,778.9)
Fair value of plan assets at end of year	2,959.4	3,539.0
Pension Benefits
Change in Benefit Obligation
Benefit obligation at beginning of year	4,092.2	3,979.0
Service cost	93.8	88.5	89.0
Interest cost	159.8	161.3	151.1
Plan participants’ contributions	0.0	0.0
Amendments	2.0	0.7
Actuarial loss (gain)	(18.5)	35.7
Special termination benefits	25.6	6.9
Curtailments	(18.8)	0.0
Benefits paid	(168.2)	(176.7)
Currency	(1.0)	(3.2)
Business divestitures	(263.9)
Benefit obligation at end of year	3,903.0	4,092.2	3,979.0
Change in Plan Assets
Fair value of plan assets at beginning of year	3,539.0	3,546.0
Actual return on plan assets	(146.2)	178.6
Employer contributions	11.9	13.5
Plan participants’ contributions	0.0	0.0
Investment and administrative expenses	(22.0)	(18.8)
Benefits paid	(168.2)	(176.7)
Currency	(1.1)	(3.6)
Business divestitures	(254.0)	0.0
Fair value of plan assets at end of year	2,959.4	3,539.0	3,546.0
Other Benefits
Change in Benefit Obligation
Benefit obligation at beginning of year	235.4	283.5
Service cost	0.4	0.6	0.7
Interest cost	7.5	9.9	9.7
Plan participants’ contributions	4.8	5.9
Amendments	0.0	(3.3)
Actuarial loss (gain)	0.6	(35.9)
Special termination benefits	0.0	0.0
Curtailments	0.0	0.0
Benefits paid	(21.9)	(24.3)
Currency	(0.2)	(1.0)
Business divestitures	(24.9)
Benefit obligation at end of year	201.7	235.4	283.5
Change in Plan Assets
Fair value of plan assets at beginning of year	0.1	0.3
Actual return on plan assets	0.0	(0.3)
Employer contributions	17.1	18.5
Plan participants’ contributions	4.8	5.9
Investment and administrative expenses	0.0	0.0
Benefits paid	(21.9)	(24.3)
Currency	0.0	0.0
Business divestitures	0.0	0.0
Fair value of plan assets at end of year	$ 0.1	$ 0.1	$ 0.3