PENSION AND POSTRETIREMENT BENEFITS - Schedule of Funded Status and Amounts Recognized (Details) - USD ($) $ in Millions	May 28, 2017	Dec. 31, 2016	May 29, 2016
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Funded Status	$ (565.1)		$ (943.6)
Amounts Recognized in Consolidated Balance Sheets
Other assets	17.1		3.0
Other accrued liabilities	(10.9)		(10.6)
Other noncurrent liabilities	(571.3)		(936.0)
Net Amount Recognized	(565.1)		(943.6)
Amounts Recognized in Accumulated Other Comprehensive (Income) Loss (Pre-tax)
Actuarial net loss (gain)	174.2		373.0
Net prior service cost (benefit)	16.0		13.4
Total	$ 190.2		$ 386.4
Weighted-Average Actuarial Assumptions Used to Determine Benefit Obligations at May 28, 2017 and May 29, 2016
Discount rate	3.90%	4.11%	3.83%
Long-term rate of compensation increase	3.63%		3.66%
Other Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Funded Status	$ (156.9)		$ (201.6)
Amounts Recognized in Consolidated Balance Sheets
Other assets	0.0		0.0
Other accrued liabilities	(18.4)		(21.8)
Other noncurrent liabilities	(138.5)		(179.8)
Net Amount Recognized	(156.9)		(201.6)
Amounts Recognized in Accumulated Other Comprehensive (Income) Loss (Pre-tax)
Actuarial net loss (gain)	(9.0)		23.9
Net prior service cost (benefit)	(4.6)		(11.6)
Total	$ (13.6)		$ 12.3
Weighted-Average Actuarial Assumptions Used to Determine Benefit Obligations at May 28, 2017 and May 29, 2016
Discount rate	3.33%		3.18%