Receivables - Components of Finance and Contract Receivables Beyond One Year (Details) - USD ($) $ in Millions	Sep. 26, 2020	Dec. 28, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Long-term finance and contract receivables	$ 1,547.4	$ 1,509.9
Allowance for credit loss, noncurrent	(57.9)	(46.3)
Total long-term finance and contract receivables – net	1,489.5	1,463.6
Finance Receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Long-term finance and contract receivables	1,173.5	1,145.7
Allowance for credit loss, noncurrent	(51.2)	(42.2)
Total long-term finance and contract receivables – net	1,122.3	1,103.5
Finance Receivables | Finance and Contract Installment Receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Long-term finance and contract receivables	1,152.9	1,106.0
Allowance for credit loss, noncurrent	(50.9)	(41.6)
Finance Receivables | Finance and Contract Lease Receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Unearned finance charges, noncurrent	3.6	8.2
Long-term finance and contract receivables	20.6	39.7
Allowance for credit loss, noncurrent	(0.3)	(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	(6.7)	(4.1)
Total long-term finance and contract receivables – net	367.2	360.1
Contract Receivables | Finance and Contract Installment Receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Long-term finance and contract receivables	198.2	195.5
Allowance for credit loss, noncurrent	(3.1)	(1.8)
Contract Receivables | Finance and Contract Lease Receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Unearned finance charges, noncurrent	29.3	29.4
Long-term finance and contract receivables	175.7	168.7
Allowance for credit loss, noncurrent	$ (3.6)	$ (2.3)