XML 43 R29.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Summary of Accounting Policies (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2016
Summary of Accounting Policies |
Schedule for Company's allowance for doubtful accounts |
(in millions) |  | 2016 |  | 2015 |  | 2014
Balance at January 1 |  | $ | 4.7 |  | $ | 4.8 |  | $ | 3.3
Provision charged to expense |  |  | 0.7 |  |  | 0.4 |  |  | 2.3
Amounts written off, net of recoveries |  |  | (1.4) |  |  | (0.5) |  |  | (0.8)
Balance at December 31 |  | $ | 4.0 |  | $ | 4.7 |  | $ | 4.8

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration