Receivables - Aging of Finance and Contract Receivables (Detail) - USD ($) $ in Millions	Mar. 30, 2019	Dec. 29, 2018
Receivables [Abstract]
Finance receivables, 30-59 Days Past Due	$ 14.1	$ 19.4
Finance receivables, 60-90 Days Past Due	9.7	12.1
Finance receivables, Greater Than 90 Days Past Due	19.4	20.3
Finance receivables, Total Past Due	43.2	51.8
Finance receivables, Total Not Past Due	1,620.8	1,602.5
Finance receivables, Total	1,664.0	1,654.3
Finance receivables, Greater Than 90 Days Past Due and Accruing	15.0	15.9
Contract receivables, 30-59 Days Past Due	1.3	1.7
Contract receivables, 60-90 Days Past Due	0.9	1.2
Contract receivables, Greater Than 90 Days Past Due	1.4	5.2
Contract receivables, Total Past Due	3.6	8.1
Contract receivables, Total Not Past Due	439.1	439.4
Contract receivables, Total	442.7	447.5
Contract receivables, Greater Than 90 Days Past Due and Accruing	$ 0.4	$ 0.2