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Acquisitions, Discontinued Operations and Formation of Shanghai Electric JV (Details) In Millions, except Per Share data, unless otherwise specified | 12 Months Ended | 0 Months Ended | 12 Months Ended |  |  | 12 Months Ended |  |  | 12 Months Ended | 1 Months Ended | 12 Months Ended |  | 1 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended | 1 Months Ended
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Dec. 31, 2012 USD ($) Y | Dec. 31, 2011 USD ($) | Dec. 31, 2010 USD ($) | Feb. 28, 2011 B.W. Murdoch Ltd. ("Murdoch") USD ($) | Dec. 22, 2011 Clyde Union GBP (£) | Dec. 31, 2011 Clyde Union USD ($) | Dec. 31, 2010 Clyde Union USD ($) | Dec. 31, 2012 Clyde Union USD ($) | Dec. 22, 2011 Clyde Union USD ($) | Dec. 31, 2012 Clyde Union Customer lists USD ($) Y | Dec. 31, 2012 Clyde Union Customer relationships USD ($) Y | Dec. 31, 2012 Clyde Union Technology USD ($) Y | Dec. 31, 2012 Clyde Union Trademarks USD ($) | Dec. 22, 2011 Clyde Union Minimum GBP (£) | Dec. 22, 2011 Clyde Union Maximum GBP (£) | Jun. 30, 2010 Anhydro business ("Anhydro") USD ($) | Mar. 31, 2010 Torque Tension Systems Ltd. ("TTS") USD ($) | Jan. 31, 2010 Gerstenberg Schroder A/S ("Gerstenberg") USD ($) | Mar. 31, 2011 Flow Technology reportable segment B.W. Murdoch Ltd. ("Murdoch") USD ($) | Dec. 31, 2012 Flow Technology reportable segment Clyde Union GBP (£) | Dec. 22, 2011 Flow Technology reportable segment Clyde Union GBP (£) | Oct. 31, 2011 Flow Technology reportable segment e&e Verfahrenstechnik GmbH (e&e) EUR (€) | Oct. 31, 2011 Flow Technology reportable segment e&e Verfahrenstechnik GmbH (e&e) EUR (€) | Mar. 21, 2012 Flow Technology reportable segment Seital USD ($) | Mar. 31, 2012 Flow Technology reportable segment Seital USD ($) | Jul. 31, 2010 Flow Technology reportable segment Anhydro business ("Anhydro") USD ($) | Feb. 28, 2010 Flow Technology reportable segment Gerstenberg Schroder A/S ("Gerstenberg") USD ($) | Apr. 30, 2010 Industrial Products and Services Torque Tension Systems Ltd. ("TTS") USD ($)
Acquisitions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum measurement period from the date of acquisition (in years) | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Initial payment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | £ 500.0 |  |  |  |  |  |  |
Debt assumed and other adjustments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11.0 |  |  |  |  |  |  |
Potential earn-out payment equal to number of times of Group EBITDA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 |  |  |  |  |  |  |  |
Deduction from Group EBITDA x 10 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 475.0 |  |  |  |  |  |  |  |
Cash acquired in business acquisition |  |  |  |  |  |  |  |  | 44.3 |  |  |  |  |  |  |  |  |  |  |  |  | 3.8 | 3.8 | 2.5 |  | 10.9 | 3.5 | 2.4
Debt assumed in business acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.8 |  |  | 3.9 |
Revenues of the acquired business for the prior twelve months |  |  |  | 13.0 |  |  |  |  |  |  |  |  |  |  |  | 71.0 | 9.0 | 57.0 |  |  |  |  | 15.3 |  | 14.0 |  |  |
Purchase price of the business acquired | 34.3 | 747.5 | 114.8 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8.1 |  |  | 11.7 |  | 28.8 |  | 59.1 | 30.9 | 15.7
Earn-out payment |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 250.0 |  |  |  |  |  |  | 3.5 | 3.5 |  |  |  |  |
Contribution by the sellers of acquired entity to the acquired business at the time of sale |  |  |  |  | 25.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of increase in goodwill | 73.6 | 3.8 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets acquired: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current assets, including cash and equivalents of $44.3 |  |  |  |  |  |  |  | 354.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment |  |  |  |  |  |  |  | 89.8 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  |  | 377.2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  | 374.6 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other assets |  |  |  |  |  |  |  | 25.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total assets acquired |  |  |  |  |  |  |  | 1,220.8 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable indefinite-lived intangible assets acquired |  |  |  |  |  |  |  |  |  | 3.3 | 234.4 | 60.1 | 76.8 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average useful life (in years) |  |  |  |  |  |  |  |  |  | 2.0 | 30.0 | 27.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross receivables acquired |  |  |  |  |  |  |  | 152.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of gross receivables acquired |  |  |  |  |  |  |  | 148.2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Liabilities assumed: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current liabilities |  |  |  |  |  |  |  | 287.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other long-term liabilities |  |  |  |  |  |  |  | 165.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total liabilities assumed |  |  |  |  |  |  |  | 452.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interests |  |  |  |  |  |  |  | 1.8 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net assets acquired |  |  |  |  |  |  |  | 767.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated additional amortization and depreciation expense as a result of intangibles and fixed assets acquired |  |  |  |  |  | 5.5 | 10.6 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Elimination of interest expense related to the portion of long-term debt paid-off at the time of acquisition |  |  |  |  |  | 17.8 | 11.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Addition of interest expense related to term loans drawn in order to finance acquisition |  |  |  |  |  | 19.0 | 20.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Elimination of rent expense associated with a facility leased |  |  |  |  |  | 2.1 | 2.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Elimination of charges incurred associated with the foreign currency protection agreements to hedge the purchase price |  |  |  |  |  | 34.6 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Elimination of transaction fees associated with the acquisition |  |  |  |  |  | 7.4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Elimination of transaction fees incurred in connection with the acquisition |  |  |  |  |  | 5.6 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Elimination of transaction fees incurred by the acquiree in connection with the acquisition |  |  |  |  |  | 1.8 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reduction in bonding costs due to more favorable rates under senior credit facilities |  |  |  |  |  | 5.9 | 5.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pro forma information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  | 4,971.1 | 4,502.2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations attributable to SPX Corporation common shareholders |  |  |  |  |  | 158.5 | 195.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to SPX Corporation common shareholders |  |  |  |  |  | $ 188.5 | $ 220.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic (in dollars per share) |  |  |  |  |  | $ 3.14 | $ 3.93 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Diluted (in dollars per share) |  |  |  |  |  | $ 3.11 | $ 3.88 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to SPX Corporation common shareholders: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic (in dollars per share) |  |  |  |  |  | $ 3.73 | $ 4.43 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Diluted (in dollars per share) |  |  |  |  |  | $ 3.70 | $ 4.37 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The amount of acquisition cost of a business combination allocated to assets acquired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 37 -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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- Definition Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 52 -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 53 -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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- Definition The amount of acquisition cost of a business combination allocated to noncurrent liabilities of the acquired entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 37 -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 98-1 -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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- Definition The amount of acquisition cost of a business combination allocated to noncurrent assets of the acquired entity, except for property plant and equipment, intangible assets, and goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 98-1 -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 37 -Subparagraph f -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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