Commitments (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Feb. 28, 2014	Feb. 22, 2013	Feb. 24, 2012
Long-term Purchase Commitment [Line Items]
Proceeds from disposal of fixed assets	$ 9.5	$ 15.5	$ 11.7
Construction in Progress, Estimated Cost to Complete	34.4	22.2
Gain (Loss) on Sale of Property Plant Equipment	1.7	(1.6)	(4.6)
Deferred Gain on Sale of Property	10.1	14.2
Operating Leases, Rent Expense, Net	51.4	53.0	50.0
Operating Leases, Rent Expense, Sublease Rentals	4.9	5.7	7.8
Impairment of Leasehold	0.5	0	3.0
Minimum annual rental commitment [Member]
Long-term Purchase Commitment [Line Items]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	(41.3)
Operating Leases, Future Minimum Payments, Due in Two Years	(35.8)
Operating Leases, Future Minimum Payments, Due in Three Years	(24.7)
Operating Leases, Future Minimum Payments, Due in Four Years	(26.9)
Operating Leases, Future Minimum Payments, Due in Five Years	(14.4)
Operating Leases, Future Minimum Payments, Due Thereafter	(44.4)
Operating Leases, Future Minimum Payments Due	(187.5)
Minimum annual sublease rental income [Member]
Long-term Purchase Commitment [Line Items]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	(3.8)
Operating Leases, Future Minimum Payments, Due in Two Years	(3.2)
Operating Leases, Future Minimum Payments, Due in Three Years	(2.9)
Operating Leases, Future Minimum Payments, Due in Four Years	(2.4)
Operating Leases, Future Minimum Payments, Due in Five Years	(1.3)
Operating Leases, Future Minimum Payments, Due Thereafter	(3.0)
Operating Leases, Future Minimum Payments Due	(16.6)
Minimum annual commitments, net [Member]
Long-term Purchase Commitment [Line Items]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	(37.5)
Operating Leases, Future Minimum Payments, Due in Two Years	(32.6)
Operating Leases, Future Minimum Payments, Due in Three Years	(21.8)
Operating Leases, Future Minimum Payments, Due in Four Years	(24.5)
Operating Leases, Future Minimum Payments, Due in Five Years	(13.1)
Operating Leases, Future Minimum Payments, Due Thereafter	(41.4)
Operating Leases, Future Minimum Payments Due	$ (170.9)