Revenue (Details) - USD ($) $ in Millions		3 Months Ended
		May 24, 2019	May 25, 2018
Revenues		$ 824.3	$ 754.0
Contract with Customer, Liability		20.0
Contract with Customer, Liability		22.3
Americas [Member]
Revenues		576.3	535.8
EMEA [Member]
Revenues		161.3	137.4
Other category [Member]
Revenues		86.7	80.8
UNITED STATES
Revenues		535.9	471.3
Foreign locations [Member]
Revenues		288.4	282.7
Systems and storage [Member] | Americas [Member]
Revenues		310.8	258.0
Systems and storage [Member] | EMEA [Member]
Revenues		62.0	62.8
Systems and storage [Member] | Other category [Member]
Revenues		14.5	7.7
Seating [Member] | Americas [Member]
Revenues		171.7	157.9
Seating [Member] | EMEA [Member]
Revenues		60.0	44.2
Seating [Member] | Other category [Member]
Revenues		19.5	11.2
Other Product Category [Member] | Americas [Member]
Revenues	[1]	93.8	119.9
Other Product Category [Member] | EMEA [Member]
Revenues	[1]	39.3	30.4
Other Product Category [Member] | Other category [Member]
Revenues	[1]	52.7	$ 61.9
Deposits [Member]
contract with customer, increases in liability due to deposits received		12.8
Contract with Customer, Liability, Revenue Recognized		$ (10.5)

[1] The Other product category data by segment consists primarily of consolidated dealers, textiles and surface materials, worktools, architecture, technology, other uncategorized product lines and services.