Leases (Details) - USD ($) $ in Millions		3 Months Ended	9 Months Ended
		Nov. 22, 2019	Nov. 22, 2019	Feb. 22, 2019
Lessee, Lease, Description [Line Items]
Document Period End Date			Nov. 22, 2019
Operating Leases, Future Minimum Payments, Remainder of Fiscal Year	[1]	$ 11.9	$ 11.9
Operating Lease, Payments		9.5	32.9
Operating Lease, Cost		13.0	37.6
Sublease Income		(0.4)	(0.8)
Lease, Cost		12.6	36.8
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability		$ 25.6	$ 83.8
Operating Lease, Weighted Average Remaining Lease Term		7 years 4 months 24 days	7 years 4 months 24 days
Lessee, Operating Lease, Discount Rate		4.10%	4.10%
Operating Leases, Future Minimum Payments, Due in Two Years	[1]	$ 47.2	$ 47.2
Operating Leases, Future Minimum Payments, Due in Three Years	[1]	43.6	43.6
Operating Leases, Future Minimum Payments, Due in Four Years	[1]	37.6	37.6
Operating Leases, Future Minimum Payments, Due in Five Years	[1]	32.5	32.5
Operating Leases, Future Minimum Payments, Due Thereafter	[1]	116.2	116.2
Operating Leases, Future Minimum Payments Due	[1]	289.0	289.0
Operating Lease interest included in future lease payments	[1]	40.1	40.1
Operating Lease, Liability	[1]	248.9	248.9
Minimum annual rental commitment [Member]
Lessee, Lease, Description [Line Items]
Operating Leases, Future Minimum Payments, Due in Two Years				$ 41.7
Operating Leases, Future Minimum Payments, Due in Three Years				40.5
Operating Leases, Future Minimum Payments, Due in Four Years				36.5
Operating Leases, Future Minimum Payments, Due in Five Years				28.0
Operating Leases, Future Minimum Payments, Due Thereafter				72.2
Operating Leases, Future Minimum Payments Due				264.9
Operating Leases, Future Minimum Payments Due, Next Twelve Months				46.0
Minimum annual sublease rental income [Member]
Lessee, Lease, Description [Line Items]
Operating Leases, Future Minimum Payments, Due in Two Years				0.3
Operating Leases, Future Minimum Payments, Due in Three Years				0.2
Operating Leases, Future Minimum Payments, Due in Four Years				0.2
Operating Leases, Future Minimum Payments, Due in Five Years				0.2
Operating Leases, Future Minimum Payments, Due Thereafter				0.6
Operating Leases, Future Minimum Payments Due				2.1
Operating Leases, Future Minimum Payments Due, Next Twelve Months				0.6
Minimum annual commitments, net [Member]
Lessee, Lease, Description [Line Items]
Operating Leases, Future Minimum Payments, Due in Two Years				41.4
Operating Leases, Future Minimum Payments, Due in Three Years				40.3
Operating Leases, Future Minimum Payments, Due in Four Years				36.3
Operating Leases, Future Minimum Payments, Due in Five Years				27.8
Operating Leases, Future Minimum Payments, Due Thereafter				71.6
Operating Leases, Future Minimum Payments Due		$ 262.8	$ 262.8
Operating Leases, Future Minimum Payments Due, Next Twelve Months				$ 45.4

[1] Lease payments include options to extend lease terms that are reasonably certain of being exercised. The payments exclude legally binding minimum lease payments for leases signed but not yet commenced.