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Acquisitions (2014 Acquisitions - Other 2014 Acquisitions) (Narrative) (Details) - USD ($) $ in Millions |  |  | 9 Months Ended
--- | --- | --- | ---
Apr. 01, 2014 | Jan. 01, 2014 | Sep. 30, 2015
April 2014 Acquisition [Member] |  |  |
Business Combinations [Line Items] |  |  |
Business combinations, effective date |  |  | Apr. 01, 2014
Business combinations, percentage of voting interests acquired |  |  | 100.00%
Business combinations, description of acquired entity |  |  | a telecommunications services firm, specializing in the installation of in-home security systems
Business combinations, payments in cash (in dollars) | $ 16.3 |  |
April 2014 Acquisition [Member] | Earn-Out Arrangements [Member] |  |  |
Business Combinations [Line Items] |  |  |
Business combinations, contingent consideration, earn-out period (in years) |  |  | 5 years
Business combinations, contingent consideration, fair value of earn-out (in dollars) |  |  | $ 0.6
January 2014 Acquisition [Member] |  |  |
Business Combinations [Line Items] |  |  |
Business combinations, effective date |  |  | Jan. 01, 2014
Business combinations, percentage of voting interests acquired |  |  | 100.00%
Business combinations, description of acquired entity |  |  | a telecommunications services firm, specializing in the engineering, installation, furnishing and integration of telecommunications equipment
Business combinations, payments in cash (in dollars) |  | $ 23.8 |
January 2014 Acquisition [Member] | Earn-Out Arrangements [Member] |  |  |
Business Combinations [Line Items] |  |  |
Business combinations, contingent consideration, earn-out period (in years) |  |  | 5 years
Business combinations, contingent consideration, fair value of earn-out (in dollars) |  |  | $ 8.7

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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585 + Details
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