Gas and Liquids Stored Underground And Gas and NGLs Receivables And Payables	3 Months Ended
Mar. 31, 2014
Gas and Liquids Stored Underground and Gas and NGLs Receivables and Payables [Abstract]
Gas Stored Underground and Gas Receivables and Payable [Text Block]	Note 3: Gas and Liquids Stored Underground and Gas and NGLs Receivables and Payables Subsidiaries of the Partnership provide storage services whereby they store gas or NGLs on behalf of customers and also periodically hold customer gas under parking and lending (PAL) services. Since the customers retain title to the gas held by the Partnership in providing these services, the Partnership does not record the related gas on its balance sheet. Subsidiaries of the Partnership also periodically lend gas to customers under PAL and no-notice services. As of March 31, 2014, the amount of gas owed to the subsidiaries of the Partnership due to gas imbalances and gas loaned under PAL and no-notice services was approximately 48.5 trillion British thermal units (TBtu). Assuming an average market price during March 2014 of $4.70 per million British thermal unit, the market value of that gas was approximately $227.9 million. As of December 31, 2013, the amount of gas owed to the subsidiaries of the Partnership due to gas imbalances and gas loaned under PAL and no-notice services was approximately 19.6 TBtu. As of March 31, 2014 and December 31, 2013, there were no outstanding NGLs imbalances owed to the operating subsidiaries. If any significant customer should have credit or financial problems resulting in a delay or failure to repay the gas or NGLs owed to the operating subsidiaries, it could have a material adverse effect on the Partnership’s financial condition, results of operations or cash flows.

Note 3: Gas and Liquids Stored Underground and Gas and NGLs Receivables and Payables

Subsidiaries of the Partnership provide storage services whereby they store gas or NGLs on behalf of customers and also periodically hold customer gas under parking and lending (PAL) services. Since the customers retain title to the gas held by the Partnership in providing these services, the Partnership does not record the related gas on its balance sheet.

Subsidiaries of the Partnership also periodically lend gas to customers under PAL and no-notice services. As of March 31, 2014, the amount of gas owed to the subsidiaries of the Partnership due to gas imbalances and gas loaned under PAL and no-notice services was approximately 48.5 trillion British thermal units (TBtu). Assuming an average market price during March 2014 of $4.70 per million British thermal unit, the market value of that gas was approximately $227.9 million. As of December 31, 2013, the amount of gas owed to the subsidiaries of the Partnership due to gas imbalances and gas loaned under PAL and no-notice services was approximately 19.6 TBtu. As of March 31, 2014 and December 31, 2013, there were no outstanding NGLs imbalances owed to the operating subsidiaries. If any significant customer should have credit or financial problems resulting in a delay or failure to repay the gas or NGLs owed to the operating subsidiaries, it could have a material adverse effect on the Partnership’s financial condition, results of operations or cash flows.