Receivables - Components of Finance and Contract Receivables Beyond One Year (Detail) - USD ($) $ in Millions	Oct. 03, 2015	Jan. 03, 2015
Receivables [Abstract]
Finance receivables, net of unearned finance charges of $10.7 million and $9.9 million, respectively	$ 757.9	$ 671.0
Contract receivables, net of unearned finance charges of $20.7 million and $19.4 million, respectively	264.0	244.5
Total	1,021.9	915.5
Allowances for doubtful accounts, finance receivables	(23.7)	(20.5)
Allowances for doubtful accounts, contract receivables	(3.0)	(2.5)
Total	(26.7)	(23.0)
Total long-term finance and contract receivables - net	995.2	892.5
Finance receivables - net	734.2	650.5
Contract receivables - net	261.0	242.0
Total long-term finance and contract receivables - net	$ 995.2	$ 892.5