Percentage points added to the reference rate to compute the margin rate on the debt instrument.

No definition available.

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer with payment of a "make-whole" premium and accrued and unpaid interest.

+ References

No definition available.

+ Details

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- Definition

Represents the percent of aggregate principal amount of notes that may be redeemed.

+ References

No definition available.

+ Details

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

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Period Type:	instant

- Definition

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

+ References

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

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

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

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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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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.

+ References

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Weighted average interest rate of long-term debt outstanding calculated at point in time.

+ References

No definition available.

+ Details

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Long-Term Debt (Details) - USD ($) $ in Millions				12 Months Ended
Long-Term Debt (Details) - USD ($) $ in Millions	Jun. 28, 2019	Feb. 25, 2019	Sep. 13, 2016	Dec. 31, 2019	Dec. 31, 2018	May 09, 2018
Long-term debt
Net unamortized debt issuance costs				$ (23,101)
Total long-term debt				2,892,249
AMGP Credit Facility \| AMGP
Long-term debt
Long-term debt					$ 0
Maximum borrowing capacity						$ 12
New revolving credit facility
Long-term debt
Long-term debt				959,500
New revolving credit facility \| Antero Midstream Partners
Long-term debt
Long-term debt				960
Maximum borrowing capacity				$ 2,130
Weighted average interest rate (as a percent)				3.15%
Outstanding balance				$ 0
New revolving credit facility \| Investment Grade Period
Long-term debt
Margin rates (in basis points)				0.25%
New revolving credit facility \| Investment Grade Period \| Minimum
Long-term debt
Commitment fees on the unused portion (as a percent)				0.25%
New revolving credit facility \| Investment Grade Period \| Maximum
Long-term debt
Commitment fees on the unused portion (as a percent)				0.375%
New revolving credit facility \| Not Investment Grade Period \| Minimum
Long-term debt
Commitment fees on the unused portion (as a percent)				0.175%
New revolving credit facility \| Not Investment Grade Period \| Maximum
Long-term debt
Commitment fees on the unused portion (as a percent)				0.375%
5.375% Senior Notes due 2024
Long-term debt
Long-term debt				$ 652,600
Interest rate (as a percent)				5.375%
5.375% Senior Notes due 2024 \| Finance Corp and together with Antero Midstream Partners
Long-term debt
Face amount			$ 650
Interest rate (as a percent)			5.375%
Debt instrument redemption percentage upon change of control			101.00%
5.375% Senior Notes due 2024 \| Redemption period one \| Finance Corp and together with Antero Midstream Partners
Long-term debt
Debt instrument redemption percentage			104.031%
5.375% Senior Notes due 2024 \| Redemption period two \| Finance Corp and together with Antero Midstream Partners
Long-term debt
Debt instrument redemption percentage			100.00%
5.75% Senior Notes Due 2027
Long-term debt
Long-term debt				$ 653,250
Face amount		$ 650
Interest rate (as a percent)		5.75%		5.75%
Debt instrument redemption percentage upon change of control		101.00%
5.75% Senior Notes Due 2027 \| Maximum
Long-term debt
Percent of aggregate principal amount that can be redeemed		35.00%
5.75% Senior Notes Due 2027 \| Redemption period one
Long-term debt
Debt instrument redemption percentage		102.875%
5.75% Senior Notes Due 2027 \| Redemption period two
Long-term debt
Debt instrument redemption percentage		100.00%
5.75% Senior Notes Due 2027 \| Redemption period three
Long-term debt
Debt instrument redemption percentage		105.75%
Debt instrument redemption percentage with payment of premium and interest		100.00%
5.75% Senior Notes Due 2028
Long-term debt
Long-term debt				$ 650,000
Face amount	$ 650
Interest rate (as a percent)	5.75%			5.75%
Debt instrument redemption percentage upon change of control	101.00%
5.75% Senior Notes Due 2028 \| Maximum
Long-term debt
Percent of aggregate principal amount that can be redeemed	35.00%
5.75% Senior Notes Due 2028 \| Redemption period one
Long-term debt
Debt instrument redemption percentage	102.875%
5.75% Senior Notes Due 2028 \| Redemption period two
Long-term debt
Debt instrument redemption percentage	100.00%
5.75% Senior Notes Due 2028 \| Redemption period three
Long-term debt
Debt instrument redemption percentage	105.75%
Debt instrument redemption percentage with payment of premium and interest	100.00%