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SHAREHOLDERS' EQUITY AND STOCK-BASED COMPENSATION (Details 2) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 28, 2015
Mar. 29, 2014
Stock-based Compensation    
Maximum period over which the fair value of awards are amortized 3 years  
Restricted stock shares, restricted stock units, and stock options    
Stock-based Compensation    
Compensation expense $ 23.6us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= spw_RestrictedStockSharesAndRestrictedStockUnitsAndStockOptionsMember		 $ 24.7us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= spw_RestrictedStockSharesAndRestrictedStockUnitsAndStockOptionsMember
Related tax benefit $ 8.8us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
/ us-gaap_AwardTypeAxis
= spw_RestrictedStockSharesAndRestrictedStockUnitsAndStockOptionsMember		 $ 8.9us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
/ us-gaap_AwardTypeAxis
= spw_RestrictedStockSharesAndRestrictedStockUnitsAndStockOptionsMember