Represents the percentage of ownership interest in joint venture sold.

No definition available.

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Namespace Prefix:	spw_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of days in the second and third quarter for which the entity reports its quarterly results of operations.

+ References

No definition available.

+ Details

Name:	spw_NumberOfDaysInSecondAndThirdQuarter
Namespace Prefix:	spw_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

This item represents the amount of net sales proceeds received on disposal of an equity method investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 35

-Paragraph 35

-URI http://asc.fasb.org/extlink&oid=35687916&loc=d3e32847-111569

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of gain (loss) on sale or disposal of an equity method investment.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

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

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

BASIS OF PRESENTATION (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	0 Months Ended	3 Months Ended
	Mar. 28, 2015	Jan. 07, 2014	Mar. 29, 2014
BASIS OF PRESENTATION
Length of second and third quarter	91 days
EGS Electrical Group, LLC and Subsidiaries ("EGS")
Investment in joint venture under equity method investment
Percentage of interest held in joint venture sold		44.50%
Cash proceeds from sale of interest in joint venture		$ 574.1
Gain on sale of interest in joint venture			$ 491.2