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Acquisitions (Schedule of Finite-Lived Intangible Assets Acquired, Business Acquisitions - Pacer) (Details) - Pacer [Member] $ in Millions | Jun. 01, 2014 USD ($)
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Business Combinations [Line Items] |
Finite-lived intangible assets, weighted average useful life (in years) | 6 years
Backlog [Member] |
Business Combinations [Line Items] |
Finite-lived intangible assets, weighted average useful life (in years) | 3 years
Non-Compete Agreements [Member] |
Business Combinations [Line Items] |
Finite-lived intangible assets, weighted average useful life (in years) | 9 years
Customer Relationships [Member] |
Business Combinations [Line Items] |
Finite-lived intangible assets, weighted average useful life (in years) | 8 years
Canadian Dollars [Member] |
Business Combinations [Line Items] |
Finite-lived intangible assets, fair value (in dollars) | $ 19.4
Canadian Dollars [Member] | Backlog [Member] |
Business Combinations [Line Items] |
Finite-lived intangible assets, fair value (in dollars) | 6.1
Canadian Dollars [Member] | Non-Compete Agreements [Member] |
Business Combinations [Line Items] |
Finite-lived intangible assets, fair value (in dollars) | 2.3
Canadian Dollars [Member] | Customer Relationships [Member] |
Business Combinations [Line Items] |
Finite-lived intangible assets, fair value (in dollars) | $ 11.0

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
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- Definition The amount of identifiable intangible assets recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=35744172&loc=d3e2207-128464 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472 + Details
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