Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 40,846	$ 3,487
Accounts receivable (less provision for doubtful accounts: $6,333 at March 31, 2019 and $8,648 at December 31, 2018)	817,535	1,241,843
Derivative instruments, at fair value	370,254	481,654
Tax receivable	130,567	131,573
Prepaid expenses and other	20,839	111,107
Total current assets	1,380,041	1,969,664
Property, plant and equipment	22,592,376	22,148,012
Less: accumulated depreciation and depletion	5,139,164	4,755,505
Net property, plant and equipment	17,453,212	17,392,507
Intangible assets, net	66,991	77,333
Investment in Equitrans Midstream Corporation	1,102,057	1,013,002
Other assets	337,384	268,838
Total assets	20,339,685	20,721,344
Current liabilities:
Current portion of debt	704,677	704,390
Accounts payable	877,498	1,059,873
Derivative instruments, at fair value	308,607	336,051
Other current liabilities	294,708	254,687
Total current liabilities	2,185,490	2,355,001
Credit facility borrowings	350,000	800,000
Senior Notes	3,884,591	3,882,932
Note payable to EQM Midstream Partners, LP	108,835	110,059
Deferred income taxes	1,859,578	1,823,381
Other liabilities and credits	811,603	791,742
Total liabilities	9,200,097	9,763,115
Shareholders’ equity:
Common stock, no par value, authorized 320,000 shares, shares issued: 257,225 at September 30, 2018 and 267,871 at December 31, 2017	7,817,227	7,828,554
Treasury stock, shares at cost: 2,799 at September 30, 2018 (including 299 held in rabbi trust) and 3,551 at December 31, 2017 (including 253 held in rabbi trust)	(39,665)	(49,194)
Retained earnings	3,367,810	3,184,275
Accumulated other comprehensive loss	(5,784)	(5,406)
Total equity	11,139,588	10,958,229
Total liabilities and equity	$ 20,339,685	$ 20,721,344