XML 63 R43.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Basis of Presentation and Summary of Significant Accounting Policies - Revenue Recognition (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 USD ($) business_unit | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Revenue Recognition [Abstract] |  |  |
Number of business units in which sales incentive programs are significant | business_unit | 1 |  |
Revenues recognized under percentage of completion method | $ 255.5 | $ 336.1 | $ 361.8
Costs and estimated earnings on uncompleted contracts |  |  |
Costs incurred on uncompleted contracts | 1,261.3 | 1,191.4 |
Estimated earnings (loss) to date | (59.9) | 25.0 |
Aggregate costs incurred on uncompleted contracts and estimated earnings to date | 1,201.4 | 1,216.4 |
Less: Billings to date | (1,202.0) | (1,235.8) |
Billings in excess of costs and estimated earnings | (0.6) | (19.4) |
Billings in excess of costs and estimated earnings |  |  |
Costs and estimated earnings in excess of billings | 28.8 | 33.9 |
Billings in excess of costs and estimated earnings on uncompleted contracts | (29.4) | (53.3) |
Net costs and estimated earnings in excess of billings (billings in excess of costs and estimated earnings) | $ (0.6) | $ (19.4) |
Minimum |  |  |
Revenue Recognition [Abstract] |  |  |
Period for receivables to be collected | 1 year |  |

X
- Definition Represents the aggregate of costs incurred and estimated earnings to date on uncompleted contracts accounted for under the percentage-of-completion method. + References No definition available. + Details
Name: | spxc_AggregateCostsIncurredOnUncompletedContractsAndEstimatedEarningsToDate
Namespace Prefix: | spxc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents billings to date on uncompleted contracts accounted for under the percentage-of-completion method. + References No definition available. + Details
Name: | spxc_BillingsToDate
Namespace Prefix: | spxc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | spxc_CostsAndEstimatedEarningsOnUncompletedContractsOrProgramsAbstract
Namespace Prefix: | spxc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the costs incurred on uncompleted contracts accounted for under the percentage of completion method. + References No definition available. + Details
Name: | spxc_CostsIncurredOnUncompletedContracts
Namespace Prefix: | spxc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the estimated earnings to date on uncompleted contracts accounted for under the percentage-of-completion method. + References No definition available. + Details
Name: | spxc_EstimatedEarningsToDate
Namespace Prefix: | spxc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the net costs and estimated earnings on contracts in excess of billings on uncompleted contracts accounted for under the percent definition of completion method, after considering the contracts assumed in the Clyde Union acquisition. + References No definition available. + Details
Name: | spxc_NetBillingsInExcessOfBillingsAfterAcquisition
Namespace Prefix: | spxc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the net billings in excess of costs and estimated earnings on contracts accounted for under the percentage-of-completion method. + References No definition available. + Details
Name: | spxc_NetBillingsInExcessOfCostsAndEstimatedEarnings
Namespace Prefix: | spxc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the number of business units in which sales incentive programs are significant. + References No definition available. + Details
Name: | spxc_NumberOfBusinessUnitsInWhichSalesIncentiveProgramsAreSignificant
Namespace Prefix: | spxc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the period beyond which the receivables to be collected related to contracts accounted for under the percentage of completion method, are not significant. + References No definition available. + Details
Name: | spxc_PeriodForReceivablesToBeCollected
Namespace Prefix: | spxc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the revenue recognized during the period using the percentage-of-completion method. + References No definition available. + Details
Name: | spxc_RevenueUnderPercentageOfCompletionMethod
Namespace Prefix: | spxc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Liability attributable to (i) billings in excess of costs under the percentage of completion contract accounting method representing the difference between contractually invoiced amounts (billings) and revenue recognized based, for example, on costs incurred to estimated total costs at period end or (ii) contractually invoiced amounts (billings) in excess of costs incurred and accumulated under the completed contract accounting method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 35 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=68068069&loc=d3e57807-111642 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 35 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=68068069&loc=d3e57788-111642 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 35 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68068069&loc=d3e57795-111642 + Details
Name: | us-gaap_BillingsInExcessOfCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of receivable reflecting the cost incurred on uncompleted contracts in excess of related billings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 912 -SubTopic 310 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=68054760&loc=d3e55302-109406 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)(c)(4)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)(c)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 35 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68068069&loc=d3e57795-111642 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)(c)(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 35 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=68068069&loc=d3e57807-111642 + Details
Name: | us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrPrograms
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RevenueRecognitionAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |