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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
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.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentRepurchaseAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of interest payable on debt, including, but not limited to, trade payables.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.15(5))
-URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.15(a))
-URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910

+ Details

Name:	us-gaap_InterestPayableCurrentAndNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The excess of the (1) fair value of consideration transferred to the holders of a security in excess of (2) the carrying amount of the security reported on the registrant's balance sheet, which will be deducted from net earnings to derive net earnings available to common shareholders. This amount is generally an adjustment considered in the computation of earnings per share.

+ References

No definition available.

+ Details

Name:	us-gaap_RedemptionPremium
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585

+ Details

Name:	us-gaap_RepaymentsOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=eqt_A300NotesDueOctober12022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=eqt_A6125NotesDueFebruary12025Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=eqt_A175ConvertibleNotesDueMay12026Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=eqt_A3125NotesDueMay152026Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=eqt_A390NotesDueOctober12027Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=eqt_A500NotesDueJanuary152029Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=eqt_A7000NotesDueFebruary12030Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=eqt_A3625NotesDueMay152031Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt - Debt Instrument Redemption (Details) - Senior Notes - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021	May 17, 2021	Apr. 30, 2020
3.00% notes due October 1, 2022
Debt Instrument [Line Items]
Interest rate, stated percentage	3.00%	3.00%
Principal	$ 568,823
Premiums/(Discounts)	5,546
Accrued but Unpaid Interest	7,150
Total Cost	$ 581,519
6.125% notes due February 1, 2025
Debt Instrument [Line Items]
Interest rate, stated percentage	6.125%
Principal	$ 84,406
Premiums/(Discounts)	3,046
Accrued but Unpaid Interest	2,621
Total Cost	$ 90,073
1.75% convertible notes due May 1, 2026
Debt Instrument [Line Items]
Interest rate, stated percentage	1.75%	1.75%		1.75%
Principal	$ 85,096
Premiums/(Discounts)	127,906
Accrued but Unpaid Interest	250
Total Cost	$ 213,252
3.125% notes due May 15, 2026
Debt Instrument [Line Items]
Interest rate, stated percentage	3.125%		3.125%
Principal	$ 36,646
Premiums/(Discounts)	(2,050)
Accrued but Unpaid Interest	187
Total Cost	$ 34,783
3.90% notes due October 1, 2027
Debt Instrument [Line Items]
Interest rate, stated percentage	3.90%
Principal	$ 15,567
Premiums/(Discounts)	(643)
Accrued but Unpaid Interest	188
Total Cost	$ 15,112
5.00% notes due January 15, 2029
Debt Instrument [Line Items]
Interest rate, stated percentage	5.00%
Principal	$ 13,546
Premiums/(Discounts)	(445)
Accrued but Unpaid Interest	195
Total Cost	$ 13,296
7.000% notes due February 1, 2030
Debt Instrument [Line Items]
Interest rate, stated percentage	7.00%
Principal	$ 20,000
Premiums/(Discounts)	1,428
Accrued but Unpaid Interest	640
Total Cost	$ 22,068
3.625% notes due May 15, 2031
Debt Instrument [Line Items]
Interest rate, stated percentage	3.625%		3.625%
Principal	$ 4,835
Premiums/(Discounts)	(601)
Accrued but Unpaid Interest	28
Total Cost	$ 4,262