Receivables - Components of Current Finance and Contract Receivables (Details) - USD ($) $ in Millions	Jun. 27, 2020	Dec. 28, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Finance and contract receivables, current	$ 630.3	$ 652.0
Allowance for credit losses, current	(24.1)	(21.2)
Total current finance and contract receivables – net	606.2	630.8
Finance Receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Finance and contract receivables, current	530.5	549.8
Allowance for credit losses, current	(22.0)	(19.7)
Total current finance and contract receivables – net	508.5	530.1
Finance Receivables | Finance and Contract Installment Receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Finance and contract receivables, current	501.3	511.9
Allowance for credit losses, current	(21.5)	(19.2)
Finance Receivables | Finance and Contract Lease Receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Finance and contract receivables, current	29.2	37.9
Unearned finance charges, current	8.1	11.7
Allowance for credit losses, current	(0.5)	(0.5)
Contract Receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Finance and contract receivables, current	99.8	102.2
Allowance for credit losses, current	(2.1)	(1.5)
Total current finance and contract receivables – net	97.7	100.7
Contract Receivables | Finance and Contract Installment Receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Finance and contract receivables, current	49.0	50.8
Allowance for credit losses, current	(0.8)	(0.5)
Contract Receivables | Finance and Contract Lease Receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Finance and contract receivables, current	50.8	51.4
Unearned finance charges, current	17.9	18.2
Allowance for credit losses, current	$ (1.3)	$ (1.0)