Receivables - Components of Finance and Contract Receivables Beyond One Year (Details) - USD ($) $ in Millions	Jun. 27, 2020	Dec. 28, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Long-term finance and contract receivables	$ 1,564.7	$ 1,509.9
Allowance for credit loss, noncurrent	(57.5)	(46.3)
Total long-term finance and contract receivables – net	1,507.2	1,463.6
Finance Receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Long-term finance and contract receivables	1,190.8	1,145.7
Allowance for credit loss, noncurrent	(50.5)	(42.2)
Total long-term finance and contract receivables – net	1,140.3	1,103.5
Finance Receivables | Finance and Contract Installment Receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Long-term finance and contract receivables	1,160.1	1,106.0
Allowance for credit loss, noncurrent	(50.0)	(41.6)
Finance Receivables | Finance and Contract Lease Receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Long-term finance and contract receivables	30.7	39.7
Unearned finance charges, noncurrent	6.0	8.2
Allowance for credit loss, noncurrent	(0.5)	(0.6)
Contract Receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Long-term finance and contract receivables	373.9	364.2
Allowance for credit loss, noncurrent	(7.0)	(4.1)
Total long-term finance and contract receivables – net	366.9	360.1
Contract Receivables | Finance and Contract Installment Receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Long-term finance and contract receivables	201.6	195.5
Allowance for credit loss, noncurrent	(3.3)	(1.8)
Contract Receivables | Finance and Contract Lease Receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Long-term finance and contract receivables	172.3	168.7
Unearned finance charges, noncurrent	28.7	29.4
Allowance for credit loss, noncurrent	$ (3.7)	$ (2.3)