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Revenue from Contracts with Customers - Schedule of Net Contract Liabilities on Uncompleted Construction Projects (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Revenue from Contract with Customer [Abstract] |  |
Costs incurred on uncompleted construction contracts | $ 8,656,642 | $ 8,258,802
Estimated earnings, thereon | 1,172,224 | 1,081,509
Costs and estimated earnings on uncompleted construction contracts | 9,828,866 | 9,340,311
Less: billings to date | 10,188,023 | 9,741,846
Net billings in excess of costs | $ (359,157) | $ (401,535)

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