CONTINGENT LIABILITIES AND OTHER MATTERS (Details 2) - Site investigation and remediation - site	Jun. 27, 2015	Dec. 31, 2014
Environmental Matters
Number of sites	91	91
Number of third-party disposal sites for which entity is potentially responsible	27	28
Number of active sites	8	9

Represents the number of offsite, third-party disposal sites for which the entity is potentially responsible and have received notices of potential liability pursuant to various environmental laws.

No definition available.

Name:	spw_SiteContingencyNumberOfSitesOnWhichEntityPotentiallyResponsible
Namespace Prefix:	spw_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant