Restructuring Expense - Schedule of Restructuring Rollforward (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Feb. 27, 2021	Nov. 28, 2020	Feb. 29, 2020	Feb. 27, 2021	Feb. 29, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	$ 0.3		$ 3.5	$ 1.5	$ 9.6
Gain (Loss) on Disposition of Assets		$ (3.4)
International Contract
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	0.1		0.4	(1.1)	1.0
North America Contract
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	0.2		1.4	2.6	6.9
Retail:
Restructuring Cost and Reserve [Line Items]
Restructuring Costs			$ 1.7	0.0	$ 1.7
Other Restructuring Plans
Restructuring Cost and Reserve [Line Items]
Beginning Balance				6.7
Restructuring Costs				(1.9)
Amounts Paid				(3.1)
Gain (Loss) on Disposition of Assets				1.9
Ending Balance	3.6			3.6
Severance and Employee-Related | Other Restructuring Plans
Restructuring Cost and Reserve [Line Items]
Beginning Balance				5.9
Restructuring Costs				0.1
Amounts Paid				(3.0)
Ending Balance	3.0			3.0
Severance and Employee-Related | May 2020 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Beginning Balance				15.3
Restructuring Costs				3.4
Amounts Paid				(17.3)
Ending Balance	1.4			1.4
Exit or Disposal Activities | Other Restructuring Plans
Restructuring Cost and Reserve [Line Items]
Beginning Balance				0.8
Restructuring Costs				(2.0)
Amounts Paid				(0.1)
Gain (Loss) on Disposition of Assets				1.9
Ending Balance	$ 0.6			$ 0.6