Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Detail)

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Commitments and Contingencies - Additional Information (Detail) (USD $)
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
Oct. 09, 2013
Jun. 30, 2014
Customer
Jun. 30, 2013
Customer
Jun. 30, 2014
Customer
Jun. 30, 2013
Customer
Dec. 31, 2013
Customer
Dec. 31, 2011
Jul. 31, 2014
Subsequent Event [Member]
Jun. 30, 2014
Minimum [Member]
Jun. 30, 2014
Maximum [Member]
Jun. 30, 2014
Consolidated Revenues [Member]
Minimum [Member]
Jun. 30, 2013
Consolidated Revenues [Member]
Minimum [Member]
Jun. 30, 2014
Consolidated Revenues [Member]
Minimum [Member]
Jun. 30, 2013
Consolidated Revenues [Member]
Minimum [Member]
Jun. 30, 2014
Consolidated Net Position [Member]
Minimum [Member]
Dec. 31, 2013
Consolidated Net Position [Member]
Minimum [Member]
Jun. 30, 2014
Customer One [Member]
Dec. 31, 2013
Customer One [Member]
Jun. 30, 2013
Customer One [Member]
Consolidated Revenues [Member]
Jun. 30, 2013
Customer One [Member]
Consolidated Revenues [Member]
Jun. 30, 2014
Other Customer [Member]
Dec. 31, 2013
Other Customer [Member]
Jun. 30, 2014
2014 [Member]
Jun. 30, 2014
Sunrise Powerlink Project [Member]
Apr. 21, 2010
Sunrise Powerlink Project [Member]
mi
Apr. 30, 2014
National Gas Company of Trinidad and Tobago Arbitration [Member]
Mar. 31, 2014
National Gas Company of Trinidad and Tobago Arbitration [Member]
Jun. 30, 2014
National Gas Company of Trinidad and Tobago Arbitration [Member]
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