Statements of Condensed Consolidated Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:
Net income	$ 306,009	$ 140,185
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income taxes	14,869	45,473
Depreciation, depletion, and amortization	493,341	354,817
Provision for (recovery of) losses on accounts receivable	986	(3,187)
Other income	(6,846)	(13,841)
Stock-based compensation expense	37,108	28,752
Unrealized (gains) losses on derivatives and inventory	(2,310)	3,140
Lease impairment	12,132	1,159
Noncash financial instrument put premiums		8,227
Changes in other assets and liabilities:
Dividend from Nora Gathering, LLC	9,000	7,750
Accounts receivable and unbilled revenues	37,826	50,870
Inventory	13,014	35,981
Prepaid expenses and other	12,473	(6,479)
Accounts payable	17,168	(10,001)
Accrued interest	27,030	28,285
Other items, net	35,300	(1,161)
Net cash provided by operating activities	1,007,100	669,970
Cash flows from investing activities:
Capital expenditures	(1,259,634)	(1,023,503)
Proceeds from sale of assets		4,842
Net cash used in investing activities	(1,259,634)	(1,018,661)
Cash flows from financing activities:
Proceeds from the issuance of common units of EQT Midstream Partners, LP, net of issuance costs	529,442	276,780
Dividends paid	(13,565)	(98,840)
Distributions to noncontrolling interests	(21,160)
Repayments and retirements of long-term debt	(23,204)	(19,315)
Proceeds and tax benefits from exercises under employee compensation plans	22,863	1,831
Revolving credit facility origination fees		(4,022)
Net cash provided by financing activities	494,376	156,434
Net change in cash and cash equivalents	241,842	(192,257)
Cash and cash equivalents at beginning of period	182,055	831,251
Cash and cash equivalents at end of period	423,897	638,994
Cash paid during the period for:
Interest, net of amount capitalized	83,660	93,872
Income taxes, net	$ 76,669	$ 17,193