PRE-TAX INCOME AND INCOME TAXES - Schedule of the Tax Effect of Temporary Differences and Carryforwards (Details) - USD ($) $ in Millions	May 27, 2018	May 28, 2017
Assets
Accrued expenses	$ 15.5	$ 20.2
Compensation related liabilities	34.1	63.9
Pension and other postretirement benefits	45.8	275.2
Other liabilities that will give rise to future tax deductions	109.7	117.9
Net capital and operating loss carryforwards	762.5	1,112.5
Other	26.3	60.0
Gross deferred tax assets	993.9	1,649.7
Less: Valuation allowance	(739.6)	(1,013.4)
Net deferred taxes	254.3	636.3
Liabilities
Property, plant and equipment	141.0	216.6
Goodwill, trademarks and other intangible assets	406.2	623.4
Investment in unconsolidated subsidiaries	165.8	237.8
Other	6.1	6.3
Gross deferred tax liabilities	719.1	1,084.1
Net deferred taxes	$ 719.1	$ 1,084.1