XML 64 R52.htm IDEA: XBRL DOCUMENT v3.7.0.1
Segment Reporting (Summary of Financial Information Concerning Company's Reportable Segments) (Detail)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
USD ($)
segment
Mar. 31, 2016
USD ($)
Segment Reporting Information [Line Items]    
Revenue $ 1,091,266 $ 514,680
Segment EBITDA [1] $ 318,835 159,806
Number of operating segments | segment 6  
Intercompany Revenues [Member]    
Segment Reporting Information [Line Items]    
Revenue [2] $ (151,580) (70,360)
Reportable Segments [Member]    
Segment Reporting Information [Line Items]    
Revenue 1,242,846 585,040
Segment EBITDA 334,456 168,294
Southern [Member]    
Segment Reporting Information [Line Items]    
Revenue 280,123 36,919
Segment EBITDA [1] 68,940 9,489
Southern [Member] | Intercompany Revenues [Member]    
Segment Reporting Information [Line Items]    
Revenue [2] (37,216) (6,048)
Southern [Member] | Reportable Segments [Member]    
Segment Reporting Information [Line Items]    
Revenue 317,339 42,967
Western [Member]    
Segment Reporting Information [Line Items]    
Revenue 235,590 219,234
Segment EBITDA [1] 75,569 73,789
Western [Member] | Intercompany Revenues [Member]    
Segment Reporting Information [Line Items]    
Revenue [2] (28,411) (27,630)
Western [Member] | Reportable Segments [Member]    
Segment Reporting Information [Line Items]    
Revenue 264,001 246,864
Eastern [Member]    
Segment Reporting Information [Line Items]    
Revenue 231,487 107,795
Segment EBITDA [1] 65,450 34,614
Eastern [Member] | Intercompany Revenues [Member]    
Segment Reporting Information [Line Items]    
Revenue [2] (41,810) (20,421)
Eastern [Member] | Reportable Segments [Member]    
Segment Reporting Information [Line Items]    
Revenue 273,297 128,216
Canada [Member]    
Segment Reporting Information [Line Items]    
Revenue 163,035  
Segment EBITDA [1] 57,300  
Canada [Member] | Intercompany Revenues [Member]    
Segment Reporting Information [Line Items]    
Revenue [2] (22,296)  
Canada [Member] | Reportable Segments [Member]    
Segment Reporting Information [Line Items]    
Revenue 185,331  
Central [Member]    
Segment Reporting Information [Line Items]    
Revenue 144,309 [3] 119,937
Segment EBITDA [1] 52,652 [3] 43,853
Central [Member] | Intercompany Revenues [Member]    
Segment Reporting Information [Line Items]    
Revenue [2] (19,503) [3] (13,961)
Central [Member] | Reportable Segments [Member]    
Segment Reporting Information [Line Items]    
Revenue 163,812 [3] 133,898
Exploration and Production [Member]    
Segment Reporting Information [Line Items]    
Revenue 36,722 30,795 [3]
Segment EBITDA [1] 14,545 6,549 [3]
Exploration and Production [Member] | Intercompany Revenues [Member]    
Segment Reporting Information [Line Items]    
Revenue [2] (2,344) (2,300) [3]
Exploration and Production [Member] | Reportable Segments [Member]    
Segment Reporting Information [Line Items]    
Revenue 39,066 33,095 [3]
Corporate [Member]    
Segment Reporting Information [Line Items]    
Revenue [3]  
Segment EBITDA [1],[3] $ (15,621) (8,488)
Corporate [Member] | Intercompany Revenues [Member]    
Segment Reporting Information [Line Items]    
Revenue [2],[3]  
Corporate [Member] | Reportable Segments [Member]    
Segment Reporting Information [Line Items]    
Revenue [3]  
[1] For those items included in the determination of segment EBITDA, the accounting policies of the segments are the same as those described in the Company's most recent Annual Report on Form 10-K.
[2] Intercompany revenues reflect each segment's total intercompany sales, including intercompany sales within a segment and between segments. Transactions within and between segments are generally made on a basis intended to reflect the market value of the service.
[3] Corporate functions include accounting, legal, tax, treasury, information technology, risk management, human resources, training and other administrative functions. Amounts reflected are net of allocations to the six operating segments.