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Acquisitions Acquisitions (Details) (USD $) | 3 Months Ended | 9 Months Ended |  |  |  | 0 Months Ended |  |  |  | 0 Months Ended
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Apr. 27, 2013 | Apr. 27, 2013 | Dec. 03, 2012 | Apr. 27, 2013 Quanta Services, Inc. | Dec. 03, 2012 Quanta Services, Inc. | Dec. 03, 2012 Senior Loan and Revolving Credit Credit Agreement, December 3, 2012, Maturing December 2017 | Dec. 12, 2012 Senior Subordinated Notes 7.125% Senior Subordinated Notes Due 2021 | Apr. 27, 2013 Senior Subordinated Notes 7.125% Senior Subordinated Notes Due 2021 | Jul. 28, 2012 Senior Subordinated Notes 7.125% Senior Subordinated Notes Due 2021 | Dec. 12, 2012 Senior Subordinated Notes 7.125% Senior Subordinated Notes Due 2021 Quanta Services, Inc. | Dec. 12, 2012 Senior Subordinated Notes 7.125% Senior Subordinated Notes Due 2021 Dycom Investments, Inc.
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash paid to acquire Quanta Services |  |  |  |  | $ 275,000,000 |  |  |  |  |  |
Estimated adjustment for working capital received in excess of target amount |  |  |  |  | 40,400,000 |  |  |  |  |  |
Amount paid for other specified items |  |  |  |  | 0 |  |  |  |  | 3,800,000 |
Accrued remaining purchase price of acquisition |  |  |  | 318,984,000 |  |  |  |  |  |  |
Business Acquisition, Cost of Acquired Entity, Final Payment |  |  |  | (4,154,000) |  |  |  |  |  |  |
Credit facility amount |  |  |  |  |  | 400,000,000 |  |  |  |  |
Proceeds from issuance of long-term debt |  |  |  |  |  |  | 90,000,000 |  |  |  | 90,000,000
Debt, interest rate (in percent) |  |  |  |  |  |  |  | 7.125% | 7.125% |  |
Acquisition related costs |  | 6,500,000 |  |  |  |  |  |  |  |  |
Integration related costs | 1,400,000 | 2,300,000 |  |  |  |  |  |  |  |  |
Revenues generated by acquired subsidiaries | 122,900,000 | 198,800,000 |  |  |  |  |  |  |  |  |
Amortization of Intangible Assets | $ 5,500,000 | $ 8,800,000 |  |  |  |  |  |  |  |  |
Number of States in which Entity Operates |  |  | 49 |  |  |  |  |  |  |  |
Number of Customers Served |  |  | 300 |  |  |  |  |  |  |  |

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- Definition The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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