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CONTINGENT LIABILITIES AND OTHER MATTERS (Details 3) - Consortium arrangements - Thermal Equipment and Services reportable segment - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 27, 2015	Dec. 31, 2014
Collaborative Arrangements
Entity's share of the aggregate contract value on open consortium arrangements	$ 84.6	$ 65.2
Percentage of entity's share of the aggregate contract value, recognized as revenue	77.00%	87.00%
Aggregate contract value on open consortium arrangements	$ 344.2	$ 291.1
Estimated fair value of potential obligation recorded as a liabilities	$ 0.5	$ 0.7

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- Definition

Represents the aggregate contract value on open consortium arrangements.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

X

- Definition

Represents the entity's share of aggregate contract value on open consortium arrangements.

+ References

No definition available.

+ Details

Name:	spw_CollaborativeArrangementsContractValue
Namespace Prefix:	spw_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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X

- Definition

Represents the estimated fair value of potential obligation under the joint and several liability provisions associated with consortium arrangements, recorded as a liability.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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X

- Definition

Represents the percentage of entity's share of aggregate contract value which had been recognized as revenue.

+ References

No definition available.

+ Details

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Namespace Prefix:	spw_
Data Type:	num:percentItemType
Balance Type:	na
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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X

- Details

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Namespace Prefix:
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Balance Type:
Period Type: