Regulatory Matters	6 Months Ended
Jun. 30, 2011
Notes to Financial Statements [Abstract]
Regulation and Rates	5. Regulation and Rates On August 31, 2009, Sea Robin filed with FERC to implement a rate surcharge to recover Hurricane Ike-related costs not otherwise recovered from insurance proceeds or from other third parties, with initial accumulated net costs of approximately $38 million included in the filing. On September 30, 2009, FERC approved the surcharge to be effective March 1, 2010, subject to refund and the outcome of hearings with FERC to explore issues set forth in certain customer protests, including the costs to be included and the applicability of the surcharge to discounted contracts. The Administrative Law Judge issued an initial decision on December 13, 2010, approving the surcharge for recovery from all shippers, including discounted and non-discounted shippers, over a recovery period of 21.4 years and including applicable carrying charges. The Company, as well as other parties, have filed briefs for exception on certain aspects of the decision. On March 1, 2011, Sea Robin submitted its latest semiannual filing related to the surcharge which reflected updated costs incurred through December 31, 2010 of approximately $54 million, net of insurance and surcharge recoveries, which were reflected in the updated surcharge rate effective April 1, 2011, subject to refund. The ultimate outcome of this matter is still pending a final FERC decision.

Regulatory Matters

6 Months Ended

Jun. 30, 2011

Notes to Financial Statements [Abstract]

5. Regulation and Rates

On August 31, 2009, Sea Robin filed with FERC to implement a rate surcharge to recover Hurricane Ike-related costs not otherwise recovered from insurance proceeds or from other third parties, with initial accumulated net costs of approximately $38 million included in the filing. On September 30, 2009, FERC approved the surcharge to be effective March 1, 2010, subject to refund and the outcome of hearings with FERC to explore issues set forth in certain customer protests, including the costs to be included and the applicability of the surcharge to discounted contracts. The Administrative Law Judge issued an initial decision on December 13, 2010, approving the surcharge for recovery from all shippers, including discounted and non-discounted shippers, over a recovery period of 21.4 years and including applicable carrying charges. The Company, as well as other parties, have filed briefs for exception on certain aspects of the decision. On March 1, 2011, Sea Robin submitted its latest semiannual filing related to the surcharge which reflected updated costs incurred through December 31, 2010 of approximately $54 million, net of insurance and surcharge recoveries, which were reflected in the updated surcharge rate effective April 1, 2011, subject to refund. The ultimate outcome of this matter is still pending a final FERC decision.