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SHAREHOLDERS' EQUITY AND STOCK-BASED COMPENSATION (Details 3) (Restricted stock shares and restricted stock units, USD $)
In Millions, except Share data in Thousands, unless otherwise specified
3 Months Ended
Mar. 28, 2015
Restricted stock shares and restricted stock units
 
Unvested Restricted Stock Shares and Restricted Stock Units  
Outstanding at the beginning of the period (in shares) 1,168us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= spw_RestrictedStockAndRestrictedStockUnitsMember
Granted (in shares) 375us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= spw_RestrictedStockAndRestrictedStockUnitsMember
Vested (in shares) (191)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= spw_RestrictedStockAndRestrictedStockUnitsMember
Forfeited (in shares) (175)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
/ us-gaap_AwardTypeAxis
= spw_RestrictedStockAndRestrictedStockUnitsMember
Outstanding at the end of the period (in shares) 1,177us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= spw_RestrictedStockAndRestrictedStockUnitsMember
Weighted-Average Grant-Date Fair Value Per Share  
Outstanding at the beginning of the period (in dollars per share) $ 69.22us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= spw_RestrictedStockAndRestrictedStockUnitsMember
Granted (in dollars per share) $ 85.81us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= spw_RestrictedStockAndRestrictedStockUnitsMember
Vested (in dollars per share) $ 80.46us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= spw_RestrictedStockAndRestrictedStockUnitsMember
Forfeited (in dollars per share) $ 47.67us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= spw_RestrictedStockAndRestrictedStockUnitsMember
Outstanding at the end of the period (in dollars per share) $ 75.77us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= spw_RestrictedStockAndRestrictedStockUnitsMember
Unrecognized compensation cost  
Unrecognized compensation cost $ 36.3us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= spw_RestrictedStockAndRestrictedStockUnitsMember
Weighted-average period over which unrecognized compensation costs will be recognized 2 years 1 month 6 days