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Property, Plant and Equipment | 12 Months Ended
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Dec. 31, 2014
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment | PROPERTY, PLANT AND EQUIPMENT:
| December 31,
| 2014 |  | 2013
Coal & other plant and equipment | 3,726,514 |  |  | 3,681,051 |
Intangible drilling cost | 2,798,394 |  |  | 1,937,336 |
Proven properties | 1,768,007 |  |  | 1,670,404 |
Unproven properties | 1,540,835 |  |  | 1,463,406 |
Coal properties and surface lands | 1,358,306 |  |  | 1,404,056 |
Gathering equipment | 1,088,238 |  |  | 1,058,008 |
Wells and related equipment | 716,748 |  |  | 688,548 |
Airshafts | 468,924 |  |  | 397,466 |
Leased coal lands | 263,946 |  |  | 393,372 |
Coal advance mining royalties | 386,245 |  |  | 381,348 |
Mine development | 414,501 |  |  | 354,607 |
Other gas assets | 123,539 |  |  | 126,239 |
Gas advance royalties | 20,580 |  |  | 22,668 |
Total Property, Plant and Equipment | 14,674,777 |  |  | 13,578,509 |
Less Accumulated Depreciation, Depletion and Amortization | 4,512,305 |  |  | 4,136,247 |
Total Net Property, Plant and Equipment | $ | 10,162,472 |  |  | $ | 9,442,262 |
The following assets are amortized using the units-of-production method. Amounts reflect properties where mining or drilling operations have not yet commenced and therefore, are not being amortized for the years ended December 31, 2014 and 2013, respectively.
|  | December 31,
|  | 2014 |  | 2013
Unproven gas properties |  | $ | 1,540,835 |  |  | $ | 1,463,406 |
Coal properties |  | 477,444 |  |  | 273,242 |
Mine development |  | 11,984 |  |  | 238,356 |
Leased coal lands |  | 50,044 |  |  | 99,506 |
Coal advance mining royalties |  | 52,009 |  |  | 48,043 |
Airshafts |  | 52,194 |  |  | 38,794 |
Gas advance royalties |  | 20,580 |  |  | 22,668 |
Total |  | $ | 2,205,090 |  |  | $ | 2,184,015 |
As of December 31, 2014 and 2013, plant and equipment includes gross assets under capital lease of $87,055 and $96,015, respectively. For the years ended December 31, 2014 and 2013, the E&P division maintains a capital lease for the Jewell Ridge Pipeline of $66,919, which is included in Gas gathering equipment. For the years ended December 31, 2014 and 2013, the E&P division also maintains a capital lease for vehicles of $10,207 and $10,652, respectively, which are included in Other gas assets. For the years ended December 31, 2014 and 2013, the All Other segment maintains capital leases for vehicles and computer equipment of $9,929 and $18,444, respectively, which are included in Coal and other plant and equipment. Accumulated amortization for capital leases was $49,735 and $50,371 at December 31, 2014 and 2013, respectively. Amortization expense for capital leases is included in Depreciation, Depletion and Amortization in the Consolidated Statements of Income. See Note 15–Leases for further discussion of capital leases. Industry Participation Agreements CONSOL Energy has two significant industry participation agreements (referred to as "joint ventures" or "JVs") that provided drilling and completion carries for our retained interests. CNX Gas Company is party to a joint development agreement with Hess Ohio Developments, LLC (Hess) with respect to approximately 153 thousand net Utica Shale acres in Ohio in which each party has a 50% undivided interest. Under the agreement, as amended, Hess is obligated to pay a total of approximately $335,000 in the form of a 50% drilling carry of certain CONSOL Energy working interest obligations as the acreage is developed. As of December 31, 2014, Hess’ remaining carry obligation is $99,474. CNX Gas Company is party to a joint development agreement with Noble Energy, Inc. (Noble) with respect to approximately 702 thousand net Marcellus Shale oil and gas acres in West Virginia and Pennsylvania, in which each party owns a 50% undivided interest. Under the agreement, as amended, Noble Energy is obligated to pay a total of approximately $1,846,000 in the form of a one-third drilling carry of certain of CONSOL Energy’s working interest obligations as the property is developed, subject to certain limitations. These limitations include the suspension of the carry if average Henry Hub natural gas prices are below $4.00 per million British thermal units (MMbtu) for three consecutive months. The carry was in effect from March 1, 2014, and remained effective until November 1, 2014 when average natural gas prices had been below $4.00/MMbtu for the three prior months and continues to be suspended. Restrictions also include a $400,000 annual maximum on Noble Energy's carried cost obligation. As of December 31, 2014, Noble Energy’s remaining carry obligation is approximately$1,627,065.

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- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2921-110230 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13-14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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