Acquisitions and Dispositions - Summary of Preliminary Purchase Price Allocation (Details) - USD ($) $ / shares in Units, $ in Thousands		Sep. 16, 2016	Sep. 30, 2016	Sep. 15, 2016
Oil and gas properties:
Goodwill			$ 1,630,981
Memorial
Purchase price:
Shares of Range common stock issued to Memorial stockholders		77,042,749
Range common stock price per share on September 15, 2016 (close)				$ 39.37
Total purchase price		$ 3,033,173
Plus fair value of liabilities assumed by Range:
Accounts payable		54,905
Other current liabilities		96,734
Long-term debt		1,204,449
Deferred taxes		583,575
Other long-term liabilities		19,169
Total purchase price plus liabilities assumed		4,992,005
Fair value of Memorial assets:
Cash and equivalents		7,180
Other current assets		93,911
Derivative instruments		152,994
Oil and gas properties:
Proved property		1,096,035
Unproved property		2,007,200
Other property and equipment		3,579
Goodwill	[1]	1,630,981
Other		125
Total asset value		$ 4,992,005

[1] Goodwill will not be deductible for income tax purposes.