Financial Instruments - Fair Values of Financial Instruments Not Approximating Carrying Values in Financial Statements (Detail) - USD ($) $ in Millions	Jun. 29, 2019	Dec. 29, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt and notes payable	$ 1,116.1	$ 1,132.3
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Finance receivables – net	1,618.0	1,592.9
Contract receivables – net	439.0	443.2
Long-term debt and notes payable	1,116.1	1,132.3
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Finance receivables – net	1,903.1	1,845.4
Contract receivables – net	484.3	481.2
Long-term debt and notes payable	$ 1,181.2	$ 1,136.0