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Goodwill and Other Intangible Assets (Tables) | 6 Months Ended
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Jun. 30, 2013
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill and Other Intangible Assets | The following table sets forth information for the Company’s goodwill and intangible assets as of the dates indicated (in millions):
| June 30, 2013 |  | December 31, 2012
Amortizing intangible assets: (1) |  |  |
Gross carrying amount | $ | 141.2 |  |  | $ | 129.4 |
Less: accumulated amortization | (67.0 | ) |  | (58.5 | )
Amortizing intangible assets, net | $ | 74.2 |  |  | $ | 70.9 |
Non-amortizing intangible assets: |  |  |
Trade names | $ | 34.9 |  |  | $ | 34.9 |
Pre-qualifications | 59.6 |  |  | 31.3 |
Non-amortizing intangible assets | $ | 94.5 |  |  | $ | 66.2 |
Goodwill | $ | 860.2 |  |  | $ | 826.1 |
Goodwill and other intangible assets | $ | 1,028.9 |  |  | $ | 963.2 |
(1)Consists principally of customer relationships, backlog, trade names and non-compete agreements with finite lives.
Rollforward of Goodwill and Other Intangible Assets | The following table provides a reconciliation of changes in goodwill and other intangible assets for the periods indicated (in millions):
|  |  | Other Intangible Assets |  |
| Goodwill |  | Non-amortizing |  | Amortizing |  | Total
Balance as of December 31, 2011 | $ | 714.8 |  |  | $ | 66.2 |  |  | $ | 44.5 |  |  | $ | 825.5 |
Accruals of acquisition-related contingent consideration (a) | $ | 3.5 |  |  |  |  |  |  | 3.5 |
Amortization expense |  |  |  |  | (5.7 | ) |  | (5.7 | )
Balance as of June 30, 2012 | $ | 718.3 |  |  | $ | 66.2 |  |  | $ | 38.8 |  |  | $ | 823.3 |
Balance as of December 31, 2012 | $ | 826.1 |  |  | $ | 66.2 |  |  | $ | 70.9 |  |  | $ | 963.2 |
Additions from new business combinations | 36.8 |  |  | 29.6 |  |  | 13.2 |  |  | 79.6 |
Accruals of acquisition-related contingent consideration (a) | — |  |  |  |  |  |  | — |
Amortization expense |  |  |  |  | (9.4 | ) |  | (9.4 | )
Currency translation adjustments | (2.7 | ) |  | (1.3 | ) |  | (0.5 | ) |  | (4.5 | )
Balance as of June 30, 2013 | $ | 860.2 |  |  | $ | 94.5 |  |  | $ | 74.2 |  |  | $ | 1,028.9 |
(a) | Represents contingent consideration for acquisitions prior to January 1, 2009, which is only accrued as earned, in accordance with U.S. GAAP.
Rollforward of Goodwill by Segment | The following table provides a reconciliation of changes in goodwill by reportable segment for the periods indicated (in millions):
| Communications |  | Electrical Transmission |  | Oil and Gas |  | Power Generation and Industrial |  | Total Goodwill
Balance as of December 31, 2011 | $ | 258.0 |  |  | $ | 129.5 |  |  | $ | 209.7 |  |  | $ | 117.6 |  |  | $ | 714.8 |
Accruals of acquisition-related contingent consideration (a) | — |  |  | — |  |  | 3.5 |  |  | — |  |  | 3.5 |
Balance as of June 30, 2012 | $ | 258.0 |  |  | $ | 129.5 |  |  | $ | 213.2 |  |  | $ | 117.6 |  |  | $ | 718.3 |
Balance as of December 31, 2012 | $ | 305.8 |  |  | $ | 129.5 |  |  | $ | 273.2 |  |  | $ | 117.6 |  |  | $ | 826.1 |
Additions from new business combinations | 5.4 |  |  | — |  |  | 31.4 |  |  | — |  |  | 36.8 |
Currency translation adjustments | — |  |  | — |  |  | (2.7 | ) |  | — |  |  | (2.7 | )
Balance as of June 30, 2013 | $ | 311.2 |  |  | $ | 129.5 |  |  | $ | 301.9 |  |  | $ | 117.6 |  |  | $ | 860.2 |
(a) Represents contingent consideration for acquisitions prior to January 1, 2009, which is only accrued as earned, in accordance with U.S. GAAP. See Note 16 - Segments and Operations by Geographic Area for details pertaining to the Company's reportable segments.

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13854-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph e -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. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph c -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. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 47 -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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