Income Taxes Components of Income Tax Expense and Sources of Income (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 22, 2019	Feb. 23, 2018	Feb. 24, 2017
Income Taxes [Line Items]
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount	$ 0.6	$ 4.0
Tax Cuts and Jobs Act Tax Benefit	1.0	23.9
income tax expense increase/decrease due to rate change	27.9
Valuation Allowance, Deferred Tax Assets, Reversal of Valuation Allowances, Amount	1.7
Sources of Income (Loss) Before Income Tax Expense [Abstract]
Income (Loss) from Continuing Operations before Income Taxes, Domestic	119.4	120.2	$ 136.0
Foreign	44.5	41.3	60.3
Income before income tax expense	163.9	161.5	196.3
Current Income Taxes [Abstract]
Federal	18.4	15.0	18.4
State and Local	6.0	0.8	9.5
Foreign	14.6	12.1	17.0
Current Income Taxes	39.0	27.9	44.9
Deferred Income Taxes [Abstract]
Federal	(3.6)	37.9	21.4
State and Local	1.2	7.0	1.2
Foreign	1.3	8.0	4.2
Deferred income taxes	(1.1)	52.9	26.8
Income tax expense	$ 37.9	80.8	71.7
FRANCE
Income Taxes [Line Items]
income tax expense increase/decrease due to rate change		$ 4.0	$ 7.9