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Consolidated Statements of Cash Flows (Parenthetical) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
CONSOLIDATED STATEMENTS OF CASH FLOWS |  |  |
Cash consideration, exclusive of cash transferred | $ 108.6 us-gaap_ProceedsFromDivestitureOfBusinessesNetOfCashDivested | $ 13.5 us-gaap_ProceedsFromDivestitureOfBusinessesNetOfCashDivested | $ 1,133.4 us-gaap_ProceedsFromDivestitureOfBusinessesNetOfCashDivested
Repurchase of senior notes, premiums paid | 30.6 spw_PaymentsOfPremiumsOnRepurchaseOfSeniorNotes |  |
Dividends paid, noncontrolling interest distributions | 0.5 us-gaap_PaymentsOfDividendsMinorityInterest |  | 0.7 us-gaap_PaymentsOfDividendsMinorityInterest
Income tax refunds | $ 10.0 us-gaap_ProceedsFromIncomeTaxRefunds | $ 9.4 us-gaap_ProceedsFromIncomeTaxRefunds | $ 10.3 us-gaap_ProceedsFromIncomeTaxRefunds

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- Definition Represents the amount of cash outflow for premiums paid on repurchase of senior notes during the period. + References No definition available. + Details
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Namespace Prefix: | spw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Amount of cash outflow in the form of ordinary dividends provided by the non-wholly owned subsidiary to noncontrolling interests. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition This element represents the cash inflow during the period from the sale of a component of the entity. + 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 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of cash received during the period as refunds for the overpayment of taxes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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