Rice Merger - Additional Information (Details) $ / shares in Units, a in Thousands, $ in Thousands, shares in Millions		9 Months Ended	12 Months Ended
	Nov. 13, 2017 USD ($) a $ / shares shares	Sep. 30, 2017 USD ($)	Dec. 31, 2017 USD ($) a	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired			$ 1,560,272	$ 0	$ 0
Payment for acquisition			818,957	1,051,239	0
Unamortized premium			$ 89,363	0	0
Number of acres acquired (in acres) | a			304
Merger related expenses			$ 237,312	0	0
Stock-based compensation expense			94,592	$ 44,605	$ 58,629
Rice Merger Agreement
Business Acquisition [Line Items]
Common share conversion ratio	0.37
Cash conversion (in dollars per share) | $ / shares	$ 5.30
Number of shares issued in business combination (in shares) | shares	91
Payments to Acquire Businesses, Net of Cash Acquired			1,600,000
Payment for acquisition	$ 1,299,407
Payment for debt extinguishment	$ 1,400,000
Number of acres acquired (in acres) | a	270
Amortization of debt issuance costs		$ 8,000
Merger related expenses			237,300
Stock-based compensation expense			75,300
Other compensation expense			$ 66,100
Proportion of acquiring entity's total revenue			10.00%
Proportion of acquiring entity's total income			24.00%
Goodwill, expected tax deductible amount	$ 422,500
Tax expense (benefit) for revaluation of deferred tax liabilities			$ (410,900)
Rice Merger Agreement | EQT Production
Business Acquisition [Line Items]
Goodwill acquired	549,200
Rice Merger Agreement | RMP Gathering
Business Acquisition [Line Items]
Goodwill acquired	$ 1,449,500
Rice Merger Agreement | Marcellus Acres
Business Acquisition [Line Items]
Number of acres acquired (in acres) | a	205
Rice Merger Agreement | Utica Acres
Business Acquisition [Line Items]
Number of acres acquired (in acres) | a	65
Rice Merger Agreement | Rice Energy Operating LLC's Revolving Credit Facility
Business Acquisition [Line Items]
Extinguishment of debt, amount	$ 321,000
Interest expense	1,400
Rice Merger Agreement | Rice Midstream Holdings' Revolving Credit Facility
Business Acquisition [Line Items]
Extinguishment of debt, amount	187,500
Interest expense	$ 300
Rice Merger Agreement | Rice 2022 Notes
Business Acquisition [Line Items]
Interest rate	6.25%
Unamortized premium	$ 42,200
Rice Merger Agreement | Rice 2023 Notes
Business Acquisition [Line Items]
Interest expense	$ 13,400
Interest rate	7.25%
Unamortized premium	$ 21,600
Rice Merger Agreement | EIG Global Energy Partners
Business Acquisition [Line Items]
Payment for acquisition	$ 555,500
Rice Energy Inc.
Business Acquisition [Line Items]
Par value (in dollars per share) | $ / shares	$ 0.01