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Commitments and Contingencies - Additional Information (Detail) (USD $)
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0 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended | 3 Months Ended | 6 Months Ended | 6 Months Ended | 1 Months Ended | 3 Months Ended | 6 Months Ended | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Oct. 09, 2013
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Jun. 30, 2014
Customer
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Jun. 30, 2013
Customer
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Jun. 30, 2014
Customer
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Jun. 30, 2013
Customer
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Dec. 31, 2013
Customer
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Dec. 31, 2011
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Jul. 31, 2014
Subsequent Event [Member]
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Jun. 30, 2014
Minimum [Member]
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Jun. 30, 2014
Maximum [Member]
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Jun. 30, 2014
Consolidated Revenues [Member]
Minimum [Member]
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Jun. 30, 2013
Consolidated Revenues [Member]
Minimum [Member]
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Jun. 30, 2014
Consolidated Revenues [Member]
Minimum [Member]
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Jun. 30, 2013
Consolidated Revenues [Member]
Minimum [Member]
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Jun. 30, 2014
Consolidated Net Position [Member]
Minimum [Member]
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Dec. 31, 2013
Consolidated Net Position [Member]
Minimum [Member]
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Jun. 30, 2014
Customer One [Member]
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Dec. 31, 2013
Customer One [Member]
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Jun. 30, 2013
Customer One [Member]
Consolidated Revenues [Member]
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Jun. 30, 2013
Customer One [Member]
Consolidated Revenues [Member]
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Jun. 30, 2014
Other Customer [Member]
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Dec. 31, 2013
Other Customer [Member]
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Jun. 30, 2014
2014 [Member]
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Jun. 30, 2014
Sunrise Powerlink Project [Member]
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Apr. 21, 2010
Sunrise Powerlink Project [Member]
mi
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Apr. 30, 2014
National Gas Company of Trinidad and Tobago Arbitration [Member]
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Mar. 31, 2014
National Gas Company of Trinidad and Tobago Arbitration [Member]
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Jun. 30, 2014
National Gas Company of Trinidad and Tobago Arbitration [Member]
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| Loss Contingencies [Line Items] | ||||||||||||||||||||||||||||
| Outstanding capital commitment | $ 10,100,000 | $ 10,100,000 | ||||||||||||||||||||||||||
| Rent expense related to operating leases | 42,800,000 | 27,400,000 | 77,600,000 | 51,700,000 | ||||||||||||||||||||||||
| Maximum guaranteed residual value | 366,700,000 | 366,700,000 | ||||||||||||||||||||||||||
| Estimated committed capital remainder of current year | 26,200,000 | 26,200,000 | ||||||||||||||||||||||||||
| Estimated committed capital expenditures in 2015 | 5,100,000 | 5,100,000 | ||||||||||||||||||||||||||
| Purchase commitments related to operating equipment and vehicles | 7,800,000 | |||||||||||||||||||||||||||
| Length of electrical transmission line to be constructed under contract | 117 | |||||||||||||||||||||||||||
| Claim for breach of contract | 165,000,000 | |||||||||||||||||||||||||||
| Counterclaim for alleged untimely performance and breach of contract | 32,000,000 | |||||||||||||||||||||||||||
| Damages sought by Company in arbitration, value | 16,500,000 | |||||||||||||||||||||||||||
| Loss contingency, damages sought by customer in arbitration counterclaim, value | 79,500,000 | |||||||||||||||||||||||||||
| Arbitration damages liability | 17,300,000 | |||||||||||||||||||||||||||
| Interest payable on arbitration damages and related attorney fees payable | 11,000,000 | |||||||||||||||||||||||||||
| Amount of arbitration damages and attorneys fee paid | 28,300,000 | |||||||||||||||||||||||||||
| Written Off of accounts receivable | 10,500,000 | |||||||||||||||||||||||||||
| Selling, general and administrative expenses | 139,440,000 | 119,031,000 | 312,771,000 | 232,712,000 | 38,800,000 | 38,800,000 | ||||||||||||||||||||||
| Percentage of net position | 10.00% | 15.00% | 10.00% | 11.00% | ||||||||||||||||||||||||
| Number of customers representing ten percent or more of accounts receivable | 2 | 2 | 2 | |||||||||||||||||||||||||
| Number of customers representing ten percent or more of consolidated revenues | 0 | 1 | 0 | 1 | ||||||||||||||||||||||||
| Concentration risk percentage | 10.00% | 10.00% | 10.00% | 10.00% | 10.00% | 10.00% | 10.00% | 12.00% | ||||||||||||||||||||
| Employer's liability claims subject to deductible per occurrence | 1,000,000 | |||||||||||||||||||||||||||
| General liability insurance claims deductible | 10,000,000 | |||||||||||||||||||||||||||
| Worker's compensation claims per occurrence | 5,000,000 | |||||||||||||||||||||||||||
| Auto liability insurance claims deductible | 10,000,000 | |||||||||||||||||||||||||||
| Employee health care benefit plans subject to deductible per claimant | 375,000 | |||||||||||||||||||||||||||
| Gross amount accrued for insurance claims | 170,500,000 | 170,500,000 | 161,800,000 | |||||||||||||||||||||||||
| Long-term insurance claims | 126,700,000 | 126,700,000 | 122,600,000 | |||||||||||||||||||||||||
| Related insurance recoveries/receivables | 7,900,000 | 7,900,000 | 9,100,000 | |||||||||||||||||||||||||
| Related insurance recoveries/receivables included in prepaid expenses and other current assets | 800,000 | 800,000 | 700,000 | |||||||||||||||||||||||||
| Related insurance recoveries/receivables included in other assets net | 7,100,000 | 7,100,000 | 8,400,000 | |||||||||||||||||||||||||
| Letters of credit outstanding issued under credit facility | 243,800,000 | 243,800,000 | ||||||||||||||||||||||||||
| Total amount of outstanding performance bonds | 3,100,000,000 | 3,100,000,000 | ||||||||||||||||||||||||||
| Estimated cost to complete bonded projects | 750,000,000 | 750,000,000 | ||||||||||||||||||||||||||
| Multi-employer plan withdrawal obligation | 32,600,000 | 39,600,000 | 40,100,000 | 55,400,000 | ||||||||||||||||||||||||
| Multi-employer plan withdrawal obligation, amount suggested by Plan which is different than amount recorded by company | 6,900,000 | |||||||||||||||||||||||||||
| Multi-employer plan withdrawal obligation complete withdrawal | 4,800,000 | |||||||||||||||||||||||||||
| Multi-employer plan withdrawal obligation accrued | 3,600,000 | |||||||||||||||||||||||||||
| Cash proceeds deposited in Escrow account | $ 2,100,000 | |||||||||||||||||||||||||||