Summary of Significant Accounting Policies (Revenue Recognition) - Additional Information (Detail) - USD ($) |
3 Months Ended | ||
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Mar. 31, 2017 |
Mar. 31, 2016 |
Dec. 31, 2016 |
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Revenue Recognition [Line Items] | |||
Revenues | $ 2,178,170,000 | $ 1,713,737,000 | |
Project completion percentage | 85.00% | ||
Change orders and/or claims | $ 147,100,000 | $ 137,800,000 | |
Maximum [Member] | |||
Revenue Recognition [Line Items] | |||
Percent aggregate change in contract estimates impact on operating results is less than this percentage | 5.00% | 5.00% | |
Natural Gas Transmission Project That Experienced Weather Delays [Member] | |||
Revenue Recognition [Line Items] | |||
Losses on Contracts | $ 16,500,000 | ||
Alaska Power Plant Construction Project [Member] | |||
Revenue Recognition [Line Items] | |||
Losses on Contracts | $ 21,300,000 | ||
Revenue Recognized For Losses Member | Natural Gas Transmission Project That Experienced Weather Delays [Member] | |||
Revenue Recognition [Line Items] | |||
Revenues | $ 0 |
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- Definition Percent aggregate change in contract estimates impact on operating results is less than this percentage. No definition available.
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- Definition Revenue recognition. No definition available.
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- Definition Represents revenue recognition for long-term contracts accounted for using the completed-contract method stated, as a percent complete. No definition available.
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- Definition Losses recognized in the current period on contracts which are expected to generate losses, which are probable and can be reasonably estimated, in a future period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount of costs incurred on unapproved change orders when it is probable that the cost will be recovered through a change in the contract price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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