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CONTINGENCIES AND OTHER MATTERS (Details 2) (Site investigation and remediation)	Jun. 30, 2012 site
Site investigation and remediation
Environmental Matters
Number of sites	98
Number of third-party disposal sites for which entity is potentially responsible	26
Number of active sites	10

X

- Definition

Represents the number of offsite, third-party disposal sites which have been active in the past few years.

+ References

No definition available.

+ Details

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

X

- Definition

Represents the number of sites which have liabilities for site investigation and remediation.

+ References

No definition available.

+ Details

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

X

- Definition

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.

+ References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_SiteContingencyLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration