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v3.19.3

Segment Reporting (Summary of Financial Information Concerning Company's Reportable Segments) (Detail) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 USD ($) segment | Sep. 30, 2018 USD ($) segment | Sep. 30, 2019 USD ($) segment | Sep. 30, 2018 USD ($) segment
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | $ 1,412,444 | $ 1,281,110 | $ 4,026,719 | $ 3,661,209
Segment EBITDA | [1] | 439,463 | 405,974 | 1,231,980 | 1,141,680
Operating Segments [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | 1,622,544 | 1,471,286 | 4,614,587 | 4,185,656
Segment EBITDA |  | 439,909 | 414,260 | 1,243,731 | 1,156,048
Intercompany Revenue [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue | [2] | (210,100) | (190,176) | (587,868) | (524,447)
Eastern [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | 330,887 | 284,865 | 947,334 | 788,912
Segment EBITDA | [1] | 88,101 | 82,733 | 250,106 | 222,772
Eastern [Member] | Operating Segments [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | 399,936 | 349,212 | 1,137,258 | 953,165
Eastern [Member] | Intercompany Revenue [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue | [2] | (69,049) | (64,347) | (189,924) | (164,253)
Southern [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | 305,188 | 283,040 | 890,532 | 839,489
Segment EBITDA | [1] | 77,406 | 70,159 | 226,294 | 207,853
Southern [Member] | Operating Segments [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | 347,630 | 321,306 | 1,011,572 | 951,313
Southern [Member] | Intercompany Revenue [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue | [2] | (42,442) | (38,266) | (121,040) | (111,824)
Western [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | 289,208 | 271,018 | 821,185 | 779,880
Segment EBITDA | [1] | 90,059 | 86,174 | 253,504 | 240,006
Western [Member] | Operating Segments [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | 324,859 | 303,614 | 922,737 | 874,464
Western [Member] | Intercompany Revenue [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue | [2] | (35,651) | (32,596) | (101,552) | (94,584)
Central [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | 230,074 | 189,903 | 626,312 | 527,486
Segment EBITDA | [1] | 81,746 | 71,276 | 219,280 | 195,018
Central [Member] | Operating Segments [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | 262,737 | 218,124 | 715,997 | 604,823
Central [Member] | Intercompany Revenue [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue | [2] | (32,663) | (28,221) | (89,685) | (77,337)
Canada [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | 190,820 | 187,054 | 547,694 | 543,867
Segment EBITDA | [1] | 66,794 | 68,819 | 193,702 | 195,390
Canada [Member] | Operating Segments [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | 217,879 | 211,682 | 624,470 | 615,157
Canada [Member] | Intercompany Revenue [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue | [2] | (27,059) | (24,628) | (76,776) | (71,290)
Exploration and Production [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | 66,267 | 65,230 | 193,662 | 181,575
Segment EBITDA | [1] | 35,803 | 35,099 | 100,845 | 95,009
Exploration and Production [Member] | Operating Segments [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  | 69,503 | 67,348 | 202,553 | 186,734
Exploration and Production [Member] | Intercompany Revenue [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue | [2] | (3,236) | (2,118) | (8,891) | (5,159)
Corporate [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  |  |  |  |
Segment EBITDA | [1],[3] | $ (446) | $ (8,286) | $ (11,751) | $ (14,368)
Number of operating segments | segment |  | 6 | 6 | 6 | 6
Corporate [Member] | Operating Segments [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  |  |  |  |
Corporate [Member] | Intercompany Revenue [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue |  |  |  |  |
[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.

X
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
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