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Consolidated Statements of Equity (USD $) In Millions, unless otherwise specified | SPX Corporation Shareholders' Equity | Common Stock | Paid-In Capital | Retained Earnings | Accum. Other Comprehensive Income | Common Stock In Treasury | Noncontrolling Interests | Total
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Balance at Dec. 31, 2011 | $ 2,184.2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember | $ 993.6 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 1,502.2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ 2,008.9 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | $ 189.8 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | $ (2,510.3)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | $ 10.0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember | $ 2,194.2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |
Net income (loss) | 180.4 us-gaap_ProfitLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |  | 180.4 us-gaap_ProfitLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  | 2.8 us-gaap_ProfitLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember | 183.2 us-gaap_ProfitLoss
Other comprehensive income (loss), net | 95.0 us-gaap_OtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |  |  | 95.0 us-gaap_OtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |  | 0.6 us-gaap_OtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember | 95.6 us-gaap_OtherComprehensiveIncomeLossNetOfTax
Dividends declared ($1.50, $1.00, and $1.00 for the years 2014, 2013, and 2012) | (50.9)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |  | (50.9)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |  | (50.9)us-gaap_DividendsCommonStockCash
Exercise of stock options and other incentive plan activity | 25.0 spw_StockIssuedDuringPeriodValueShareBasedCompensationPlansNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember | 4.4 spw_StockIssuedDuringPeriodValueShareBasedCompensationPlansNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 20.6 spw_StockIssuedDuringPeriodValueShareBasedCompensationPlansNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |  | 25.0 spw_StockIssuedDuringPeriodValueShareBasedCompensationPlansNetOfTax
Stock based compensation expense, including $0.6, and $1.5 related to discontinued operations for the years ended 2013 and 2012, respectively | 40.4 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  | 40.4 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |  | 40.4 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
Restricted stock and restricted stock unit vesting, including related tax benefit of $6.7,$1.7 and $0.5 for 2014, 2013, and 2012, respectively, net of tax withholdings | (4.3)us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember | 0.9 us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (9.5)us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  | 4.3 us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  | (4.3)us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings
Common stock repurchases | (245.6)us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |  |  |  | (245.6)us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  | (245.6)us-gaap_TreasuryStockValueAcquiredCostMethod
Dividends attributable to noncontrolling interests |  |  |  |  |  |  | (0.7)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember | (0.7)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
Other changes in noncontrolling interests |  |  |  |  |  |  | (1.4)spw_OtherChangesInNoncontrollingInterests / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember | (1.4)spw_OtherChangesInNoncontrollingInterests
Balance at Dec. 31, 2012 | 2,224.2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember | 998.9 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 1,553.7 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 2,138.4 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 284.8 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | (2,751.6)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | 11.3 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember | 2,235.5 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |
Net income (loss) | 210.2 us-gaap_ProfitLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |  | 210.2 us-gaap_ProfitLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  | 2.4 us-gaap_ProfitLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember | 212.6 us-gaap_ProfitLoss
Other comprehensive income (loss), net | 2.7 us-gaap_OtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |  |  | 2.7 us-gaap_OtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |  | (0.6)us-gaap_OtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember | 2.1 us-gaap_OtherComprehensiveIncomeLossNetOfTax
Dividends declared ($1.50, $1.00, and $1.00 for the years 2014, 2013, and 2012) | (45.5)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |  | (45.5)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |  | (45.5)us-gaap_DividendsCommonStockCash
Exercise of stock options and other incentive plan activity | 16.9 spw_StockIssuedDuringPeriodValueShareBasedCompensationPlansNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember | 2.2 spw_StockIssuedDuringPeriodValueShareBasedCompensationPlansNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 14.7 spw_StockIssuedDuringPeriodValueShareBasedCompensationPlansNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |  | 16.9 spw_StockIssuedDuringPeriodValueShareBasedCompensationPlansNetOfTax
Stock based compensation expense, including $0.6, and $1.5 related to discontinued operations for the years ended 2013 and 2012, respectively | 33.5 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  | 33.5 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |  | 33.5 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
Restricted stock and restricted stock unit vesting, including related tax benefit of $6.7,$1.7 and $0.5 for 2014, 2013, and 2012, respectively, net of tax withholdings | (20.8)us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember | 3.4 us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (27.4)us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  | 3.2 us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  | (20.8)us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings
Common stock repurchases | (260.2)us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |  |  |  | (260.2)us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  | (260.2)us-gaap_TreasuryStockValueAcquiredCostMethod
Other changes in noncontrolling interests | (3.0)spw_OtherChangesInNoncontrollingInterests / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  | (3.0)spw_OtherChangesInNoncontrollingInterests / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  | 0.9 spw_OtherChangesInNoncontrollingInterests / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember | (2.1)spw_OtherChangesInNoncontrollingInterests
Balance at Dec. 31, 2013 | 2,158.0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember | 1,004.5 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 1,571.5 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 2,303.1 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 287.5 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | (3,008.6)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | 14.0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember | 2,172.0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |
Net income (loss) | 397.9 us-gaap_ProfitLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |  | 397.9 us-gaap_ProfitLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  | (9.5)us-gaap_ProfitLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember | 388.4 us-gaap_ProfitLoss
Other comprehensive income (loss), net | (224.9)us-gaap_OtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |  |  | (224.9)us-gaap_OtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |  |  | (224.9)us-gaap_OtherComprehensiveIncomeLossNetOfTax
Dividends declared ($1.50, $1.00, and $1.00 for the years 2014, 2013, and 2012) | (63.2)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |  | (63.2)us-gaap_DividendsCommonStockCash / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |  | (63.2)us-gaap_DividendsCommonStockCash
Exercise of stock options and other incentive plan activity | 16.4 spw_StockIssuedDuringPeriodValueShareBasedCompensationPlansNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember | 1.6 spw_StockIssuedDuringPeriodValueShareBasedCompensationPlansNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 14.8 spw_StockIssuedDuringPeriodValueShareBasedCompensationPlansNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |  | 16.4 spw_StockIssuedDuringPeriodValueShareBasedCompensationPlansNetOfTax
Stock based compensation expense, including $0.6, and $1.5 related to discontinued operations for the years ended 2013 and 2012, respectively | 38.4 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  | 38.4 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |  | 38.4 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
Restricted stock and restricted stock unit vesting, including related tax benefit of $6.7,$1.7 and $0.5 for 2014, 2013, and 2012, respectively, net of tax withholdings | (15.9)us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember | 2.1 us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (23.9)us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  | 5.9 us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  | (15.9)us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings
Common stock repurchases | (488.8)us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember |  |  |  |  | (488.8)us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember |  | (488.8)us-gaap_TreasuryStockValueAcquiredCostMethod
Dividends attributable to noncontrolling interests |  |  |  |  |  |  | (0.5)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember | (0.5)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
Other changes in noncontrolling interests |  |  |  |  |  |  | (0.8)spw_OtherChangesInNoncontrollingInterests / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember | (0.8)spw_OtherChangesInNoncontrollingInterests
Balance at Dec. 31, 2014 | $ 1,817.9 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_ParentMember | $ 1,008.2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 1,600.8 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ 2,637.8 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | $ 62.6 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | $ (3,491.5)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember | $ 3.2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember | $ 1,821.1 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

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- Definition Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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