Receivables - Components of Current Finance and Contract Receivables (Detail) - USD ($) $ in Millions	Jul. 04, 2015	Jan. 03, 2015
Receivables [Abstract]
Finance receivables, net of unearned finance charges of $16.5 million and $15.6 million, respectively	$ 434.3	$ 414.6
Contract receivables, net of unearned finance charges of $14.4 million and $13.9 million, respectively	70.3	75.5
Total	504.6	490.1
Allowances for doubtful accounts, finance receivables	(12.6)	(12.2)
Allowances for doubtful accounts, contract receivables	(1.2)	(1.0)
Total	(13.8)	(13.2)
Total current finance and contract receivables - net	490.8	476.9
Finance receivables - net	421.7	402.4
Contract receivables - net	69.1	74.5
Total current finance and contract receivables - net	$ 490.8	$ 476.9