Receivables - Schedule of Performing and Nonperforming Finance and Contract Receivables (Detail) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 30, 2017
Financing Receivable, Recorded Investment [Line Items]
Finance Receivables	$ 1,606.4	$ 1,601.1
Contract Receivables	422.7	424.0
Performing
Financing Receivable, Recorded Investment [Line Items]
Finance Receivables	1,578.5	1,573.1
Contract Receivables	419.6	421.7
Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Finance Receivables	27.9	28.0
Contract Receivables	$ 3.1	$ 2.3