Leases (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Nov. 27, 2020	Nov. 22, 2019	Nov. 27, 2020	Nov. 22, 2019
Lessee, Lease, Description [Line Items]
Operating Leases, Future Minimum Payments, Remainder of Fiscal Year	[1]	$ 12.6		$ 12.6
Operating Lease, Payments		12.6	$ 9.5	37.3	$ 32.9
Operating Lease, Cost		12.8	13.0	38.8	37.6
Sublease Income		(0.7)	(0.4)	(1.6)	(0.8)
Lease, Cost		12.1	12.6	37.2	36.8
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability		$ 0.7	$ 25.6	$ 2.6	$ 83.8
Operating Lease, Weighted Average Remaining Lease Term		6 years 8 months 12 days	7 years 4 months 24 days	6 years 8 months 12 days	7 years 4 months 24 days
Operating Leases, Future Minimum Payments, Due in Two Years	[1]	$ 48.6		$ 48.6
Operating Leases, Future Minimum Payments, Due in Three Years	[1]	42.0		42.0
Operating Leases, Future Minimum Payments, Due in Four Years	[1]	36.6		36.6
Operating Leases, Future Minimum Payments, Due in Five Years	[1]	34.2		34.2
Operating Leases, Future Minimum Payments, Due Thereafter	[1]	92.6		92.6
Operating Leases, Future Minimum Payments Due	[1]	266.6		266.6
Operating Lease interest included in future lease payments	[1]	33.3		33.3
Operating Lease, Liability	[1]	$ 233.3		$ 233.3

[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.