Contract Assets And Liabilities (Narrative) (Details) $ in Millions	12 Months Ended
Dec. 31, 2018 USD ($)
Contract Assets and Liabilities [Abstract]
Retainage Receivable Collected Or Remitted Beyond One Year Percent	29.00%
Contracts Receivable, Claims and Uncertain Amounts, Expected to be Collected after Next Twelve Months	$ 529.3
Capitalized contract costs were amortized and recognized as expense	$ 16.3
Retainage Payable Collected Or Remitted Beyond One Year Percent	24.00%
Contract with Customer, Liability, Revenue Recognized	$ 382.7

Retainage Payable Collected Or Remitted Beyond One Year Percent

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- Definition

Retainage Receivable Collected Or Remitted Beyond One Year Percent

+ References

No definition available.

+ Details

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- Definition

Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054

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- References

No definition available.

+ Details

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- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045

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- Definition

Amount of billed or unbilled claims or similar items subject to uncertainty concerning their determination or ultimate realization under long-term contracts that are expected to be collected after the next fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3(c)(3),(4))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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