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Subsequent Event (Details) - USD ($) $ in Millions	Jan. 24, 2019	Jan. 29, 2019	Dec. 31, 2018
Electric Power Specialty Contracting Business Located in the United States | Subsequent Event
Subsequent Event [Line Items]
Purchase price	$ 47.0
PG&E
Subsequent Event [Line Items]
Pre-petition receivables			$ 102.4
PG&E | Subsequent Event
Subsequent Event [Line Items]
Pre-petition receivables		$ 79.9

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- Definition

Cash consideration transferred or to be transferred in cash except for contingent consideration.

+ References

No definition available.

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- Definition

For an unclassified balance sheet, the amount due from customers or clients for goods or services that have been delivered or sold in the normal course of business, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
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-Paragraph 1
-Subparagraph (SX 210.7-03(5))
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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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