Receivables - Components of Current Finance and Contract Receivables (Detail) - USD ($) $ in Millions	Apr. 01, 2017	Dec. 31, 2016
Receivables [Abstract]
Finance receivables, net of unearned finance charges of $17.9 million and $17.0 million, respectively	$ 500.7	$ 488.1
Contract receivables, net of unearned finance charges of $15.9 million and $15.6 million, respectively	85.9	89.3
Total	586.6	577.4
Allowances for doubtful accounts, finance receivables	(16.0)	(15.6)
Allowances for doubtful accounts, contract receivables	(1.4)	(1.2)
Total	(17.4)	(16.8)
Total current finance and contract receivables - net	569.2	560.6
Finance receivables - net	484.7	472.5
Contract receivables - net	84.5	88.1
Total current finance and contract receivables - net	$ 569.2	$ 560.6

An amount representing an agreement for an unconditional promise by the maker to pay the Company (holder) a definite sum of money within one year from the balance sheet date (or the normal operating cycle, whichever is longer), net of any write-downs taken for collection uncertainty on the part of the holder. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4531-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765

Name:	us-gaap_NotesAndLoansReceivableNetCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant