FAIR VALUE MEASUREMENTS - Financial assets and liabilities, recurring basis (Details) - USD ($) $ in Millions	Nov. 27, 2016	May 29, 2016
Assets:
Derivative assets		$ 2.1
Liabilities
Derivative liabilities	$ 0.6	0.2
Fixed rate debt
Liabilities
Long-term Debt	1,698.8
Long-term Debt, Fair Value	1,675.9
Variable rate debt
Liabilities
Long-term Debt	682.0
Recurring | Total
Assets:
Derivative assets		0.7
Deferred compensation assets	0.7	2.8
Total assets	0.7
Liabilities
Derivative liabilities	0.6	6.5
Deferred compensation liabilities	6.8	6.7
Total liabilities	7.4
Recurring | Level 1 | Total
Assets:
Derivative assets		0.7
Deferred compensation assets	0.7	2.2
Total assets	0.7
Liabilities
Derivative liabilities		6.5
Deferred compensation liabilities	6.8	6.5
Total liabilities	6.8
Recurring | Level 2 | Total
Assets:
Deferred compensation assets		0.6
Liabilities
Derivative liabilities	0.6
Deferred compensation liabilities		$ 0.2
Total liabilities	$ 0.6