Business Segments (Assets and Goodwill by Segment) (Details) - USD ($) $ in Millions	Oct. 02, 2021	Jan. 02, 2021	Sep. 26, 2020	Dec. 28, 2019
Segment Reporting Information [Line Items]
Total assets	$ 2,681.4	$ 2,137.4	$ 2,501.1
Goodwill	555.5	442.4	437.8	$ 438.9
Wolverine Michigan Group [Member]
Segment Reporting Information [Line Items]
Total assets	692.5	626.9	691.8
Goodwill	145.2	145.4	143.9
Wolverine Boston Group [Member]
Segment Reporting Information [Line Items]
Total assets	1,162.4	1,077.8	1,322.5
Goodwill	296.4	297.0	293.9
Other [Member]
Segment Reporting Information [Line Items]
Total assets	599.6	31.4	33.6
Goodwill	113.9	0.0	0.0
Corporate [Member]
Segment Reporting Information [Line Items]
Total assets	$ 226.9	$ 401.3	$ 453.2