Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2024	Jan. 19, 2024	Dec. 31, 2023	Apr. 30, 2020
Debt Instrument [Line Items]
Principal Value		$ 13,852,877	$ 13,852,877		$ 5,836,058
Carrying Value		13,793,548	13,793,548		5,795,113
Less: Current portion of debt, principal value		400,000	400,000		296,424
Less: Current portion of debt, carrying value		400,150	400,150		292,432
Total long-term debt, principal value		13,452,877	13,452,877		5,539,634
Total long-term debt, carrying value		13,393,398	13,393,398		5,502,681
Senior Notes
Debt Instrument [Line Items]
Carrying Value		11,000,000	11,000,000		4,500,000
EQT's revolving credit facility maturing July 23, 2029 | Line of Credit
Debt Instrument [Line Items]
Principal Value		1,967,000	1,967,000		0
Carrying Value		1,967,000	1,967,000		0
Eureka's revolving credit facility maturing November 13, 2025 | Line of Credit
Debt Instrument [Line Items]
Principal Value		330,000	330,000		0
Carrying Value		330,000	330,000		0
Term Loan Facility due June 30, 2026 | Loans Payable
Debt Instrument [Line Items]
Principal Value		500,000	500,000		1,250,000
Carrying Value		$ 497,970	$ 497,970		$ 1,244,265
Weighted average interest rates (percent)	7.00%	6.90%	6.90%
6.125% notes due February 1, 2025 | Senior Notes
Debt Instrument [Line Items]
Interest rate, stated percentage (in percent)		6.125%	6.125%		6.125%
Principal Value		$ 0	$ 0		$ 601,521
Carrying Value		$ 0	$ 0		$ 600,389
EQM 6.000% notes due July 1, 2025 | Senior Notes
Debt Instrument [Line Items]
Interest rate, stated percentage (in percent)		6.00%	6.00%		6.00%
Principal Value		$ 400,000	$ 400,000		$ 0
Carrying Value		$ 400,150	$ 400,150		$ 0
1.75% convertible notes due May 1, 2026 | Senior Notes
Debt Instrument [Line Items]
Interest rate, stated percentage (in percent)		1.75%	1.75%		1.75%	1.75%
Principal Value		$ 0	$ 0		$ 290,177	$ 500,000
Carrying Value		$ 0	$ 0		286,185
1.75% convertible notes due May 1, 2026 | Senior Notes | Level 2
Debt Instrument [Line Items]
Fair value of convertible notes					$ 768,600
EQT's 3.125% notes due May 15, 2026 | Senior Notes
Debt Instrument [Line Items]
Interest rate, stated percentage (in percent)		3.125%	3.125%		3.125%
Principal Value		$ 392,915	$ 392,915		$ 392,915
Carrying Value		$ 390,889	$ 390,889		$ 389,978
EQT's 7.75% debentures due July 15, 2026 | Senior Notes
Debt Instrument [Line Items]
Interest rate, stated percentage (in percent)		7.75%	7.75%		7.75%
Principal Value		$ 115,000	$ 115,000		$ 115,000
Carrying Value		$ 114,088	$ 114,088		$ 113,716
EQM's 4.125% notes due December 1, 2026 | Senior Notes
Debt Instrument [Line Items]
Interest rate, stated percentage (in percent)		4.125%	4.125%		4.125%
Principal Value		$ 500,000	$ 500,000		$ 0
Carrying Value		$ 487,340	$ 487,340		$ 0
EQM's 7.500% notes due June 1, 2027 | Senior Notes
Debt Instrument [Line Items]
Interest rate, stated percentage (in percent)		7.50%	7.50%		7.50%
Principal Value		$ 500,000	$ 500,000		$ 0
Carrying Value		$ 512,554	$ 512,554		$ 0
EQM's 6.500% notes due July 1, 2027 | Senior Notes
Debt Instrument [Line Items]
Interest rate, stated percentage (in percent)		6.50%	6.50%		6.50%
Principal Value		$ 900,000	$ 900,000		$ 0
Carrying Value		$ 917,091	$ 917,091		$ 0
EQT's 3.90% notes due October 1, 2027 | Senior Notes
Debt Instrument [Line Items]
Interest rate, stated percentage (in percent)		3.90%	3.90%		3.90%
Principal Value		$ 1,169,503	$ 1,169,503		$ 1,169,503
Carrying Value		$ 1,166,252	$ 1,166,252		$ 1,165,439
EQT's 5.700% notes due April 1, 2028 | Senior Notes
Debt Instrument [Line Items]
Interest rate, stated percentage (in percent)		5.70%	5.70%		5.70%
Principal Value		$ 500,000	$ 500,000		$ 500,000
Carrying Value		$ 492,074	$ 492,074		$ 490,376
EQM's 5.500% notes due July 15, 2028 | Senior Notes
Debt Instrument [Line Items]
Interest rate, stated percentage (in percent)		5.50%	5.50%		5.50%
Principal Value		$ 850,000	$ 850,000		$ 0
Carrying Value		$ 846,328	$ 846,328		$ 0
EQT's 5.00% notes due January 15, 2029 | Senior Notes
Debt Instrument [Line Items]
Interest rate, stated percentage (in percent)		5.00%	5.00%		5.00%
Principal Value		$ 318,494	$ 318,494		$ 318,494
Carrying Value		$ 315,619	$ 315,619		$ 315,121
EQM's 4.50% notes due January 15, 2029 | Senior Notes
Debt Instrument [Line Items]
Interest rate, stated percentage (in percent)		4.50%	4.50%		4.50%
Principal Value		$ 800,000	$ 800,000		$ 0
Carrying Value		$ 764,360	$ 764,360		$ 0
EQM's 6.375% notes due April 1, 2029 | Senior Notes
Debt Instrument [Line Items]
Interest rate, stated percentage (in percent)		6.375%	6.375%		6.375%
Principal Value		$ 600,000	$ 600,000		$ 0
Carrying Value		$ 609,177	$ 609,177		$ 0
7.000% notes due February 1, 2030 | Senior Notes
Debt Instrument [Line Items]
Interest rate, stated percentage (in percent)		7.00%	7.00%		7.00%
Principal Value		$ 674,800	$ 674,800		$ 674,800
Carrying Value		$ 671,486	$ 671,486		$ 671,020
EQM's 7.500% notes due June 1, 2030 | Senior Notes
Debt Instrument [Line Items]
Interest rate, stated percentage (in percent)		7.50%	7.50%		7.50%
Principal Value		$ 500,000	$ 500,000		$ 0
Carrying Value		$ 537,317	$ 537,317		$ 0
EQM's 4.75% notes due January 15, 2031 | Senior Notes
Debt Instrument [Line Items]
Interest rate, stated percentage (in percent)		4.75%	4.75%		4.75%
Principal Value		$ 1,100,000	$ 1,100,000		$ 0
Carrying Value		$ 1,042,951	$ 1,042,951		$ 0
EQT's 3.625% notes due May 15, 2031 | Senior Notes
Debt Instrument [Line Items]
Interest rate, stated percentage (in percent)		3.625%	3.625%		3.625%
Principal Value		$ 435,165	$ 435,165		$ 435,165
Carrying Value		$ 430,649	$ 430,649		$ 430,141
EQT's 5.750% notes due February 1, 2034 | Senior Notes
Debt Instrument [Line Items]
Interest rate, stated percentage (in percent)		5.75%	5.75%	5.75%	5.75%
Principal Value		$ 750,000	$ 750,000	$ 750,000	$ 0
Carrying Value		$ 742,598	$ 742,598		$ 0
EQM's 6.500% notes due July 15, 2048 | Senior Notes
Debt Instrument [Line Items]
Interest rate, stated percentage (in percent)		6.50%	6.50%		6.50%
Principal Value		$ 550,000	$ 550,000		$ 0
Carrying Value		557,655	557,655		0
Note payable to EQM | Notes payable to EQM
Debt Instrument [Line Items]
Principal Value		0	0		88,483
Carrying Value		$ 0	$ 0		$ 88,483