Financial Instruments - Fair Values of Financial Instruments Not Approximating Carrying Values in Financial Statements (Detail) - USD ($) $ in Millions	Oct. 01, 2016	Jan. 02, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, notes payable and current maturities of long-term debt	$ 896.0	$ 880.1
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Finance receivables - net	1,374.2	1,220.0
Contract receivables - net	376.7	348.7
Long-term debt, notes payable and current maturities of long-term debt	896.0	880.1
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Finance receivables - net	1,592.0	1,381.9
Contract receivables - net	415.3	380.2
Long-term debt, notes payable and current maturities of long-term debt	$ 981.7	$ 961.1