Gain on Sale of Assets	12 Months Ended
Gain on Sale of Assets	Dec. 31, 2016
Gain On Sale of Assets [Abstract]
Gain on Sale of Assets	Gain on Sale of Assets The Partnership recognizes gains on conveyances of mineral rights positions into earnings as any obligation associated with conveyance is satisfied. For the years ended December 31, 2016, 2015 and 2014, gains on conveyances amounted to $16.9 million, $52.3 million and $34.5 million, respectively, and are included in "Gain on sale of assets" on the Statements of Consolidated and Combined Operations. Included in the gains on conveyances is a cash bonus payment of $9.0 million and $35.8 million received by CEVCO during the years ended December 31, 2016 and 2015, respectively, for the lease of Utica Shale and Upper Devonian gas rights in Greene and Washington Counties in Pennsylvania and Marshall and Ohio Counties in West Virginia. As of December 31, 2016 and 2015, deferred gains of approximately $0.3 million and $8.1 million, respectively, were deferred pending performance of future obligations and recorded in "Deferred revenue" on the Consolidated Balance Sheets.

CPG OpCo LP 10-K