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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Amount, after accumulated amortization, of debt discount (premium).

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Carrying value as of the balance sheet date of notes payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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Weighted average interest rate of long-term debt outstanding.

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Long-Term Debt (Details) - USD ($)	9 Months Ended
Long-Term Debt (Details) - USD ($)	Sep. 30, 2016	Oct. 24, 2016	Sep. 13, 2016	Dec. 31, 2015	Mar. 17, 2015	Sep. 18, 2014	May 06, 2014	Nov. 05, 2013	Feb. 04, 2013	Nov. 19, 2012
Long- term Debt
Long-term debt	$ 4,759,904,000			$ 4,668,782,000
Antero Resources Corp
Long- term Debt
Net unamortized premium	5,698,000			6,513,000
Net unamortized debt issuance costs	(35,560,000)			(39,731,000)
Antero Midstream Partners LP
Long- term Debt
Net unamortized debt issuance costs	(10,234,000)
Midstream Credit Facility Member \| Antero Midstream Partners LP
Long- term Debt
Bank credit facility long-term debt	170,000,000			$ 620,000,000
Maximum amount of the Credit Facility	$ 1,500,000,000
Weighted average interest rate (as a percent)	2.03%			1.92%
Midstream Credit Facility Member \| Minimum \| Antero Midstream Partners LP
Long- term Debt
Commitment fees on the unused portion (as a percent)	0.25%
Midstream Credit Facility Member \| Maximum \| Antero Midstream Partners LP
Long- term Debt
Commitment fees on the unused portion (as a percent)	0.375%
Bank credit facility
Long- term Debt
Current borrowing base	$ 4,500,000,000
Bank credit facility \| Antero Resources Corp
Long- term Debt
Bank credit facility long-term debt	605,000,000			$ 707,000,000
Current borrowing base	4,500,000,000
Lender commitments	$ 4,000,000,000
Weighted average interest rate (as a percent)	2.31%			2.32%
Outstanding letters of credit	$ 709,000,000			$ 702,000,000
Bank credit facility \| Minimum \| Antero Resources Corp
Long- term Debt
Commitment fees on the unused portion (as a percent)	0.375%
Bank credit facility \| Maximum \| Antero Resources Corp
Long- term Debt
Commitment fees on the unused portion (as a percent)	0.50%
Bank credit facility \| Subsequent event
Long- term Debt
Current borrowing base		$ 4,750,000,000
Bank credit facility \| Subsequent event \| Antero Resources Corp
Long- term Debt
Current borrowing base		4,750,000,000
Lender commitments		$ 4,000,000,000
6.00% senior notes due 2020 \| Antero Resources Corp
Long- term Debt
Long-term notes payable	$ 525,000,000			525,000,000
Interest rate (as a percent)										6.00%
Senior notes issued									$ 225,000,000	$ 300,000,000
Issue price as percentage of par value									103.00%	100.00%
Redemption price	104.50%
Redemption price at which notes may be required to be repurchased in event of change of control	101.00%
6.00% senior notes due 2020 \| On or after December 1, 2018 \| Antero Resources Corp
Long- term Debt
Redemption price	100.00%
5.375% senior notes due 2021 \| Antero Resources Corp
Long- term Debt
Long-term notes payable	$ 1,000,000,000			1,000,000,000
Interest rate (as a percent)								5.375%
Senior notes issued								$ 1,000,000,000
Issue price as percentage of par value								100.00%
Redemption price at which notes may be required to be repurchased in event of change of control	101.00%
5.375% senior notes due 2021 \| On or after November 1, 2016 \| Antero Resources Corp
Long- term Debt
Redemption price	104.031%
5.375% senior notes due 2021 \| On or after November 1, 2019 \| Antero Resources Corp
Long- term Debt
Redemption price	100.00%
5.375% senior notes due 2021 \| On or before November 1, 2016 \| Antero Resources Corp
Long- term Debt
Redemption price	100.00%
Percentage of the principal amount of the debt instrument which the entity may redeem with the proceeds from certain equity offerings	35.00%
Redemption price of the debt instrument if redeemed with the proceeds of certain equity offerings (as a percent)	105.375%
Stand-alone revolving note \| Antero Resources Corp
Long- term Debt
Maximum amount of the Credit Facility	$ 25,000,000
Outstanding balance	$ 0			0
Stand-alone revolving note \| Lender's Prime Rate \| Antero Resources Corp
Long- term Debt
Basis spread on variable rate (as a percent)	1.00%
5.125% senior notes due 2022 \| Antero Resources Corp
Long- term Debt
Long-term notes payable	$ 1,100,000,000			1,100,000,000
Interest rate (as a percent)							5.125%
Senior notes issued						$ 500,000,000	$ 600,000,000
Issue price as percentage of par value						100.50%	100.00%
Redemption price at which notes may be required to be repurchased in event of change of control	101.00%
5.125% senior notes due 2022 \| On or after June 1, 2017 \| Antero Resources Corp
Long- term Debt
Redemption price	103.844%
5.125% senior notes due 2022 \| On or before June 1, 2017 \| Antero Resources Corp
Long- term Debt
Percentage of the principal amount of the debt instrument which the entity may redeem with the proceeds from certain equity offerings	35.00%
Redemption price of the debt instrument if redeemed with the proceeds of certain equity offerings (as a percent)	105.125%
5.125% senior notes due 2022 \| Prior to June 1, 2017 \| Antero Resources Corp
Long- term Debt
Redemption price	100.00%
5.125% senior notes due 2022 \| On or after June 1, 2020 \| Antero Resources Corp
Long- term Debt
Redemption price	100.00%
5.625% senior notes due 2023 \| Antero Resources Corp
Long- term Debt
Long-term notes payable	$ 750,000,000			$ 750,000,000
Interest rate (as a percent)					5.625%
Senior notes issued					$ 750,000,000
Issue price as percentage of par value					100.00%
Redemption price at which notes may be required to be repurchased in event of change of control	101.00%
5.625% senior notes due 2023 \| On Or Before June 1, 2018 \| Antero Resources Corp
Long- term Debt
Percentage of the principal amount of the debt instrument which the entity may redeem with the proceeds from certain equity offerings	35.00%
Redemption price of the debt instrument if redeemed with the proceeds of certain equity offerings (as a percent)	105.625%
5.625% senior notes due 2023 \| On or after June 1, 2018 \| Antero Resources Corp
Long- term Debt
Redemption price	104.219%
5.625% senior notes due 2023 \| On Or After June 1, 2021 \| Antero Resources Corp
Long- term Debt
Redemption price	100.00%
5.625% senior notes due 2023 \| Prior to June 1, 2018 \| Antero Resources Corp
Long- term Debt
Redemption price	100.00%
5.375% senior notes due 2024 \| Antero Midstream Partners LP
Long- term Debt
Long-term notes payable	$ 650,000,000
Interest rate (as a percent)			5.375%
Senior notes issued			$ 650,000,000
Issue price as percentage of par value			100.00%
Redemption price at which notes may be required to be repurchased in event of change of control	101.00%
5.375% senior notes due 2024 \| On or after September 15, 2019 \| Antero Midstream Partners LP
Long- term Debt
Redemption price	104.031%
5.375% senior notes due 2024 \| On or after September 15, 2022 \| Antero Midstream Partners LP
Long- term Debt
Redemption price	100.00%
5.375% senior notes due 2024 \| On or before September 15, 2019 \| Antero Midstream Partners LP
Long- term Debt
Percentage of the principal amount of the debt instrument which the entity may redeem with the proceeds from certain equity offerings	35.00%
Redemption price of the debt instrument if redeemed with the proceeds of certain equity offerings (as a percent)	105.375%
5.375% senior notes due 2024 \| Prior to September 15, 2019 \| Antero Midstream Partners LP
Long- term Debt
Redemption price	100.00%