-Network: (11 - Statement - Statement Of Income Alternative)

-Income Statement [Abstract] {ID1}

-Statement [Table] {ID2}

-Statement [Line Items] {ID3}

-Revenue and Other Income: {ID4}

Outside Sales {ID5}

Related Party Sales {ID6}

Royalty Interest Gas Sales {ID7}

Purchased Gas Sales {ID8}

Other Income {ID9}

Total Revenue and Other Income {ID10}

-Costs and Expenses: {ID11}

Lifting Costs {ID12}

Gathering and Compression Costs {ID13}

Royalty Interest Gas Costs {ID14}

Purchased Gas Costs {ID15}

Other {ID16}

General and Administrative {ID17}

Other Corporate Expenses {ID18}

Depreciation, Depletion and Amortization {ID19}

Interest Expense {ID20}

Total Costs and Expenses {ID21}

Earnings Before Income Taxes and Noncontrolling Interest {ID22}

Noncontrolling Interest {ID23}

Earnings Before Income Taxes {ID24}

Income Taxes {ID25}

Net Income Attributable to CNX Gas Shareholders {ID26}

-Earnings Per Share: {ID27}

Basic {ID28}

Dilutive {ID29}

-Weighted Average Number of Common Shares Outstanding: {ID30}

Basic {ID31}

Dilutive {ID32}

-Network: (12 - Statement - Statement Of Financial Position Classified)

-Statement of Financial Position [Abstract] {ID33}

-Statement [Table] {ID34}

-Statement [Line Items] {ID35}

-ASSETS {ID36}

-Current Assets: {ID37}

Cash and Cash Equivalents {ID38}

-Accounts and Notes Receivable: {ID39}

Trade {ID40}

Other Receivables {ID41}

Recoverable Income Taxes {ID42}

Derivatives {ID43}

Other {ID44}

Total Current Assets {ID45}

-Property, Plant and Equipment: {ID46}

Property, Plant and Equipment {ID47}

Less-Accumulated Depreciation, Depletion and Amortization {ID48}

Total Property, Plant and Equipment-Net {ID49}

-Other Assets: {ID50}

Investment in Affiliates {ID51}

Derivatives {ID52}

Other {ID53}

Total Other Assets {ID54}

TOTAL ASSETS {ID55}

-LIABILITIES AND STOCKHOLDERS' EQUITY {ID56}

-Current Liabilities: {ID57}

Accounts Payable {ID58}

Accrued Royalties {ID59}

Accrued Severance Taxes {ID60}

Related Parties {ID61}

Short-Term Notes Payable {ID62}

Deferred Income Taxes {ID63}

Accrued Income Taxes {ID64}

Current Portion of Long-Term Debt {ID65}

Other Current Liabilities {ID66}

Total Current Liabilities {ID67}

-Long-Term Debt: {ID68}

Long-Term Debt {ID69}

Capital Lease Obligations {ID70}

Total Long-Term Debt {ID71}

-Deferred Credits and Other Liabilities: {ID72}

Deferred Income Taxes {ID73}

Gas Well Plugging {ID74}

Postretirement Benefits Other Than Pensions {ID75}

Other {ID76}

Total Deferred Credits and Other Liabilities {ID77}

Total Liabilities {ID78}

-Stockholders' Equity: {ID79}

Common Stock, $.01 par value; 200,000,000 Shares Authorized, 150,976,021 Issued and Outstanding at June 30, 2009 and 150,971,636 Issued and Outstanding at December 31, 2008 {ID80}

Capital in Excess of Par Value {ID81}

Preferred Stock, 5,000,000 Shares Authorized; None Issued and Outstanding {ID82}

Retained Earnings {ID83}

Other Comprehensive Income {ID84}

Total CNX Gas Shareholders' Equity {ID85}

Noncontrolling Interest {ID86}

Total Equity {ID87}

TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY {ID88}

-Network: (13 - Statement - Statement Of Financial Position Classified (Parenthetical))

-Statement of Financial Position [Abstract] {ID89}

-Statement [Table] {ID90}

-Statement [Line Items] {ID91}

Common Stock, par value {ID92}

Common Stock, Shares Authorized {ID93}

Common Stock, Issued {ID94}

Common Stock, Outstanding {ID95}

Preferred Stock, Shares Authorized {ID96}

Preferred Stock, Issued {ID97}

Preferred Stock, Outstanding {ID98}

-Network: (14 - Statement - Statement Of Shareholders Equity And Other Comprehensive Income)

-Statement of Stockholders' Equity [Abstract] {ID99}

-Statement [Table] {ID100}

-Statement, Equity Components [Axis] {ID101}

-Equity Component [Domain] {ID102}

Common Stock {ID103}

Capital in Excess of Par Value {ID104}

Retained Earnings {ID105}

Accumulated Other Comprehensive Income (Loss) {ID106}

Total CNX Gas Stockholders' Equity {ID107}

Noncontrolling Interest {ID108}

-Statement [Line Items] {ID109}

Stockholders Equity Statement Abstract {ID110}

Beginning Balance {ID111}

Net Income Attributable to CNX Gas Shareholders {ID112}

Gas Cash Flow Hedge (net of $4,775 tax) {ID113}

SFAS 158 OPEB Adjustment (Net of $7 tax) {ID114}

Comprehensive Income (Loss) {ID115}

Stock Options Exercised {ID116}

Tax Benefit from Stock-Based Compensation {ID117}

Amortization of Restricted Stock Unit Grants {ID118}

Amortization of Stock Option Grants {ID119}

Noncontrolling Interest {ID120}

Ending Balance {ID121}

-Network: (15 - Statement - Statement Of Shareholders Equity And Other Comprehensive Income (Parenthetical))

-Statement of Stockholders' Equity [Abstract] {ID122}

-Statement [Table] {ID123}

-Statement, Equity Components [Axis] {ID124}

-Equity Component [Domain] {ID125}

Common Stock {ID126}

Capital in Excess of Par Value {ID127}

Retained Earnings {ID128}

Accumulated Other Comprehensive Income (Loss) {ID129}

Total CNX Gas Stockholders' Equity {ID130}

Noncontrolling Interest {ID131}

-Statement [Line Items] {ID132}

Gas Cash Flow Hedge, tax {ID133}

SFAS 158 OPEB Adjustment, tax {ID134}

-Network: (16 - Statement - Statement Of Cash Flows Indirect)

-Statement of Cash Flows [Abstract] {ID135}

-Statement [Table] {ID136}

-Statement [Line Items] {ID137}

-Operating Activities: {ID138}

Net Income Attributable to CNX Gas Shareholders {ID139}

-Adjustments to Reconcile Net Income Attributable to CNX Gas Shareholders to Net Cash Provided by Operating Activities: {ID140}

Depreciation, Depletion and Amortization {ID141}

Stock-based Compensation {ID142}

(Gain) Loss on the Sale of Assets {ID143}

Change in Noncontrolling Interest {ID144}

Deferred Income Taxes {ID145}

Equity in Earnings of Affiliates {ID146}

-Changes in Operating Assets: {ID147}

Accounts Receivable {ID148}

Related Party Receivable {ID149}

Other Current Assets {ID150}

Changes in Other Assets {ID151}

-Changes in Operating Liabilities: {ID152}

Accounts Payable {ID153}

Income Taxes {ID154}

Other Current Liabilities {ID155}

Changes in Other Liabilities {ID156}

Other {ID157}

Net Cash Provided by Operating Activities {ID158}

-Investing Activities: {ID159}

Capital Expenditures {ID160}

Acquisition of Knox Energy {ID161}

Investment in Equity Affiliates {ID162}

Proceeds From Sales of Assets {ID163}

Net Cash Used in Investing Activities {ID164}

-Financing Activities: {ID165}

Capital Lease Payments {ID166}

Variable Interest Entity Debt {ID167}

Proceeds from Short-Term Borrowings {ID168}

Exercise of Stock Options {ID169}

Noncontrolling Interest Distribution {ID170}

Tax Benefit from Stock Based Compensation {ID171}

Net Cash Provided by Financing Activities {ID172}

Net Decrease in Cash and Cash Equivalents {ID173}

Cash and Cash Equivalents at Beginning of Period {ID174}

Cash and Cash Equivalents at End of Period {ID175}

-Network: (17 - Disclosure - Notes to Financial Statements)

-Notes to Financial Statements [Abstract] {ID176}

Note 1-Basis of Presentation: {ID177}

Note 2-Significant Acquisitions and Dispositions: {ID178}

Note 3-Pension and Other Postretirement Benefits: {ID179}

Note 4-Income Taxes: {ID180}

Note 5-Property, Plant and Equipment: {ID181}

Note 6-Credit Facility: {ID182}

Note 7-Commitments and Contingent Liabilities: {ID183}

Note 8-Derivatives: {ID184}

Note 9-Comprehensive Income: {ID185}

Note 10-Fair Value of Financial Instruments: {ID186}

Note 11-Variable Interest: {ID187}

Note 12-Segment Information: {ID188}

Note 13-Recent Accounting Pronouncements: {ID189}

-Network: (18 - Disclosure - Document Information)

-Document Information [Text Block] {ID190}

Document Type {ID191}

Amendment Flag {ID192}

Amendment Description {ID193}

Document Period End Date {ID194}

-Network: (19 - Disclosure - Entity Information)

-Entity [Text Block] {ID195}

Trading Symbol {ID196}

Entity Registrant Name {ID197}

Entity Central Index Key {ID198}

Current Fiscal Year End Date {ID199}

Entity Well-known Seasoned Issuer {ID200}

Entity Current Reporting Status {ID201}

Entity Voluntary Filers {ID202}

Entity Filer Category {ID203}

Entity Common Stock, Shares Outstanding {ID204}

Entity Public Float {ID205}

CNX Gas Corp XBRL Taxonomy Presentation Networks