Revenue (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Nov. 22, 2019		Nov. 23, 2018		Nov. 22, 2019	Nov. 23, 2018
Revenues	$ 955.2		$ 901.0		$ 2,777.5	$ 2,530.8
Contract with Customer, Liability					20.0
Contract with Customer, Liability	26.0				26.0
Americas [Member]
Revenues	690.9		638.6		2,006.7	1,828.5
EMEA [Member]
Revenues	168.4		170.9		483.9	441.5
Other category [Member]
Revenues	95.9		91.5		286.9	260.8
UNITED STATES
Revenues	705.4		586.0		1,922.1	1,640.1
Foreign locations [Member]
Revenues	249.8		315.0		855.4	890.7
Systems and storage [Member] | Americas [Member]
Revenues	351.7		337.6		1,058.5	906.6
Systems and storage [Member] | EMEA [Member]
Revenues	66.1		49.6		187.0	174.3
Systems and storage [Member] | Other category [Member]
Revenues	16.7		13.8		46.9	41.6
Seating [Member] | Americas [Member]
Revenues	197.3		195.5		588.6	541.4
Seating [Member] | EMEA [Member]
Revenues	60.7		33.1		174.0	121.4
Seating [Member] | Other category [Member]
Revenues	21.4		26.4		65.3	67.9
Other Product Category [Member] | Americas [Member]
Revenues	141.9	[1]	105.5	[1]	359.6	380.5
Other Product Category [Member] | EMEA [Member]
Revenues	41.6	[1]	88.2	[1]	122.9	145.8
Other Product Category [Member] | Other category [Member]
Revenues	$ 57.8	[1]	$ 51.3	[1]	174.7	$ 151.3
Deposits [Member]
contract with customer, increases in liability due to deposits received					23.3
Contract with Customer, Liability, Revenue Recognized					$ (17.3)

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