Accumulated Other Comprehensive Income (Loss) Reclassification from Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions		3 Months Ended								12 Months Ended
		Feb. 22, 2019	Nov. 23, 2018	Aug. 24, 2018	May 25, 2018	Feb. 23, 2018	Nov. 24, 2017	Aug. 25, 2017	May 26, 2017	Feb. 22, 2019	Feb. 23, 2018	Feb. 24, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense										$ (37.9)	$ (80.8)	$ (71.7)
Interest Expense										37.5	17.5	17.2
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax										(22.7)	38.6	(12.4)
Net income		$ 22.6	$ 37.3	$ 49.1	$ 17.0	$ 0.0	$ 25.7	$ 36.9	$ 18.1	126.0	80.7	124.6
Other income (expense), net										14.9	22.3	$ 15.9
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income										(5.3)	(1.3)
Minimum pension liability [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income										(5.5)	(1.3)
Prior Service Costs [Member] | Minimum pension liability [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income (expense), net	[1]									(1.0)	(7.1)
Actuarial Loss [Member] | Minimum pension liability [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income (expense), net	[1]									(6.2)	(3.2)
Reclassification out of accumulated Other Comprehensive Income due to Defined Benefit Plan Settlements [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense										(1.7)	(1.9)
Reclassification out of accumulated Other Comprehensive Income due to Defined Benefit Plan Settlements [Member] | Minimum pension liability [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest Expense										0.1	0.0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax										0.1	0.0
Other income (expense), net	[1]									$ 0.0	$ 7.1

[1] The 2018 amounts were reclassified from Costs of sales and Operating expenses to Other income, net as a result of the adoption of ASU 2017-07.