Statements of Condensed Consolidated Equity (Unaudited) (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Natural gas, tax expense (benefit)	$ (2,640)	$ (28,934)
Interest rate, tax expense (benefit)	78	78
Pension and other post-retirement benefits liability adjustment, tax expense	$ 148	$ 6,287
Dividends (in dollars per share)	$ 0.09	$ 0.09
EQM
Distributions to noncontrolling interests (in dollars per common unit)	2.675	2.235
EQGP
Distributions to noncontrolling interests (in dollars per common unit)	$ 0.578	$ 0.406