Subsequent Events

6 Months Ended

Jun. 30, 2013

Subsequent Events [Abstract]

Subsequent events

Note 13 - Subsequent Events

Questar Gas

Utah General Rate Case - On July 1, 2013, Questar Gas filed a general rate case in Utah requesting an increase in revenues of $19 million and a continuation of its 10.35% authorized return on equity. A decision on the case is expected in the first quarter of 2014, with any changes becoming effective in the same quarter.

Long-term Debt Commitment - Questar Gas has entered into a commitment to borrow $150 million of long-term debt in the private placement market to be funded in December 2013. Questar Gas will issue $90 million of 30-year notes with an interest rate of 4.78% and $60 million of 35-year notes with an interest rate of 4.83%. Proceeds from the debt issuance will be used to repay existing indebtedness and for general corporate purposes.

Wexpro

Acquisition - On July 29, 2013, Wexpro Company entered into a definitive agreement to acquire an additional interest in natural gas-producing properties for $106.4 million. Wexpro is increasing its working interest in existing Wexpro-operated wells in the Trail Unit of southwestern Wyoming's Vermillion Basin.

Questar Pipeline

Strategic Review of Questar Southern Trails Pipeline - In July 2013, Questar Pipeline entered into an agreement with another pipeline company to evaluate and potentially convert the western portion of its Southern Trails Pipeline back to its original purpose as a crude oil transport pipeline and to develop a rail terminal to offload crude from railcars and into the pipeline for transportation to refineries in Long Beach, California. Questar Pipeline is also in discussions with parties to either purchase the eastern segment of Southern Trails Pipeline or to enter into a long-term transportation contract for the full capacity of the pipeline.