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Commitments and Contingencies - Additional Information (Detail) (USD $)
 0 Months Ended 3 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended 1 Months Ended 3 Months Ended 9 Months Ended
Oct. 09, 2013
Sep. 30, 2014
Customer
Sep. 30, 2013
Customer
Sep. 30, 2014
Customer
Sep. 30, 2013
Customer
Jul. 31, 2014
Dec. 31, 2013
Customer
Dec. 31, 2011
Dec. 31, 2013
Customer One [Member]
Sep. 30, 2013
Customer One [Member]
Consolidated Revenues [Member]
Dec. 31, 2013
Other Customer [Member]
Sep. 30, 2014
Sunrise Powerlink Project [Member]
Apr. 21, 2010
Sunrise Powerlink Project [Member]
mi
Sep. 30, 2014
Fiber Optic Committed Capital [Member]
Sep. 30, 2014
Vehicle Fleet Committed Capital [Member]
Sep. 30, 2014
Minimum [Member]
Sep. 30, 2014
Minimum [Member]
Consolidated Revenues [Member]
Sep. 30, 2013
Minimum [Member]
Consolidated Revenues [Member]
Sep. 30, 2014
Minimum [Member]
Consolidated Revenues [Member]
Sep. 30, 2013
Minimum [Member]
Consolidated Revenues [Member]
Sep. 30, 2014
Minimum [Member]
Net Position [Member]
Dec. 31, 2013
Minimum [Member]
Net Position [Member]
Sep. 30, 2014
Maximum [Member]
Apr. 30, 2014
National Gas Company of Trinidad and Tobago Arbitration [Member]
Mar. 31, 2014
National Gas Company of Trinidad and Tobago Arbitration [Member]
Sep. 30, 2014
National Gas Company of Trinidad and Tobago Arbitration [Member]
Loss Contingencies [Line Items]                                                    
Outstanding capital commitment   $ 10,300,000   $ 10,300,000                                            
Rent expense related to operating leases   38,400,000 28,500,000 115,900,000 80,200,000                                          
Maximum guaranteed residual value   387,600,000   387,600,000                                            
Estimated committed capital remainder of current year                           13,800,000 5,700,000                      
Estimated committed capital expenditures in 2015                           10,200,000                        
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                            
Provision for contract receivable   52,542,000   52,542,000               52,500,000                            
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   200,521,000 124,949,000 513,292,000 357,661,000                                       38,800,000 38,800,000
Percentage of net position                 15.00%   11.00%                              
Number of customers representing ten percent or more of net position             2                                      
Number of customers representing ten percent or more of consolidated revenues   0 0 0 1                                          
Concentration risk percentage                   10.00%             10.00% 10.00% 10.00% 10.00% 10.00% 10.00%        
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   171,000,000   171,000,000     161,800,000                                      
Long-term insurance claims   131,400,000   131,400,000     122,600,000                                      
Related insurance recoveries/receivables   9,000,000   9,000,000     9,100,000                                      
Related insurance recoveries/receivables included in prepaid expenses and other current assets   700,000   700,000     700,000                                      
Related insurance recoveries/receivables included in other assets net   8,300,000   8,300,000     8,400,000                                      
Letters of credit and bank guarantees under the credit facility   320,200,000   320,200,000                                            
Total amount of outstanding performance bonds   3,500,000,000   3,500,000,000                                            
Estimated cost to complete bonded projects   694,000,000   694,000,000                                            
Multi-employer plan withdrawal obligation           39,600,000   32,600,000               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       3,400,000                                            
Cash proceeds deposited in Escrow account $ 2,100,000