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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

X
- Definition Represents the aggregate contract value on open consortium arrangements. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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
Period Type: | instant

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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Namespace Prefix: | spw_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- 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
Period Type: | duration

X
- 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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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |