Revenue (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Aug. 28, 2020		Aug. 23, 2019		Aug. 28, 2020	Aug. 23, 2019
Disaggregation of Revenue [Line Items]
Contract with Customer, Liability					$ 28.6
Contract with Customer, Liability	$ 104.0				104.0
Revenues	818.8		$ 998.0		1,301.6	$ 1,822.3
UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues	597.6		680.8		921.1	1,216.7
Foreign locations [Member]
Disaggregation of Revenue [Line Items]
Revenues	221.2		317.2		380.5	605.6
EMEA [Member]
Disaggregation of Revenue [Line Items]
Revenues	125.9		154.2		225.4	315.5
Other category [Member]
Disaggregation of Revenue [Line Items]
Revenues	61.7		104.3		111.1	191.0
Americas [Member]
Disaggregation of Revenue [Line Items]
Revenues	631.2		739.5		965.1	1,315.8
Seating [Member] | EMEA [Member]
Disaggregation of Revenue [Line Items]
Revenues	45.8		53.3		76.8	113.3
Seating [Member] | Other category [Member]
Disaggregation of Revenue [Line Items]
Revenues	18.7		24.4		30.9	43.9
Seating [Member] | Americas [Member]
Disaggregation of Revenue [Line Items]
Revenues	195.0		219.6		291.5	391.3
Systems and storage [Member] | EMEA [Member]
Disaggregation of Revenue [Line Items]
Revenues	47.9		58.9		91.8	120.9
Systems and storage [Member] | Other category [Member]
Disaggregation of Revenue [Line Items]
Revenues	10.4		15.7		21.1	30.2
Systems and storage [Member] | Americas [Member]
Disaggregation of Revenue [Line Items]
Revenues	310.7		396.0		479.1	706.8
Other Product Category [Member] | EMEA [Member]
Disaggregation of Revenue [Line Items]
Revenues	32.2	[1]	42.0	[1]	56.8	81.3
Other Product Category [Member] | Other category [Member]
Disaggregation of Revenue [Line Items]
Revenues	32.6	[1]	64.2	[1]	59.1	116.9
Other Product Category [Member] | Americas [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 125.5	[1]	$ 123.9	[1]	194.5	$ 217.7
Deposits [Member]
Disaggregation of Revenue [Line Items]
contract with customer, increases in liability due to deposits received					97.0
Contract with Customer, Liability, Revenue Recognized					$ (21.6)

[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.