Income Taxes Components of Income Tax Expense and Sources of Income (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 28, 2020	Feb. 22, 2019	Feb. 23, 2018
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
Sources of Income (Loss) Before Income Tax Expense [Abstract]
Income (Loss) from Continuing Operations before Income Taxes, Domestic	195.8	119.4	$ 120.2
Foreign	49.4	44.5	41.3
Income before income tax expense	245.2	163.9	161.5
Current Income Taxes [Abstract]
Federal	6.8	18.4	15.0
State and Local	10.9	6.0	0.8
Foreign	15.4	14.6	12.1
Current Income Taxes	33.1	39.0	27.9
Deferred Income Taxes [Abstract]
Federal	10.3	(3.6)	37.9
State and Local	(2.8)	1.2	7.0
Foreign	4.9	1.3	8.0
Deferred income taxes	12.4	(1.1)	52.9
Income tax expense	$ 45.5	$ 37.9	$ 80.8