Income Taxes Components of Income Tax Expense and Sources of Income (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Feb. 28, 2014	Feb. 22, 2013	Feb. 24, 2012
Sources of Income (Loss) Before Income Tax Expense [Abstract]
Domestic	$ 164.7	$ 83.8	$ 63.8
Foreign	(17.5)	(28.9)	18.2
Income before income tax expense	147.2	54.9	82.0
Current Income Taxes [Abstract]
Federal	26.8	12.1	0
State and Local	13.5	1.4	0.4
Foreign	5.1	5.6	11.3
Current Income Taxes	45.4	19.1	11.7
Deferred Income Taxes [Abstract]
Federal	9.3	(48.8)	18.0
State and Local	0.1	3.1	2.5
Foreign	4.7	42.7	(6.9)
Deferred income taxes	14.1	(3.0)	13.6
Income tax expense	$ 59.5	$ 16.1	$ 25.3