Subsequent Events	12 Months Ended
Dec. 31, 2013
Subsequent Events [Abstract]
Subsequent Events [Text Block]	(15) Subsequent Events 2022 Notes. On January 3, 2014, the Partnership instructed the trustee to deliver a notice of redemption for approximately $53.5 million in aggregate principal amount of its 2022 Notes (the “Redeemed Notes”), representing approximately 21% of the aggregate principal amount of the outstanding 2022 Notes. The Redeemed Notes were redeemed effective as of February 2, 2014 for a total redemption price equal to $1,083.32 per $1,000 principal amount redeemed. Following the completion of the redemption, approximately $196.5 million aggregate principal amount of the 2022 Notes remain outstanding. Credit Facility. On February 20, 2014, the Partnership entered into a $1.0 billion unsecured revolving credit facility, which includes a $500.0 million letter of credit subfacility (the “new credit facility”). The Partnership's ability to borrow funds and obtain letters of credit under the new credit facility is conditioned upon, among other things. the closing of the Contribution and the prior or concurrent termination of the Partnership’s existing credit facility. Upon the termination of the existing credit facility, the liens securing the existing credit facility will be released and the Partnership’s subsidiaries will no longer guarantee its indebtedness and will be released as guarantors under the indentures governing the Partnership’s Senior Notes. The new credit facility will mature on the fifth anniversary of the initial funding date, unless the Partnership requests, and the requisite lenders agree, to extend it pursuant to its terms. The new credit facility contains certain financial, operational and legal covenants. Among other things, these covenants include maintaining a ratio of consolidated indebtedness to consolidated EBITDA (as defined in the new credit facility, which definition includes projected EBITDA from certain capital expansion projects) of no more than 5.0 to 1.0. If the Partnership consummates one or more acquisitions in which the aggregate purchase price is $50.0 million or more, the maximum allowed ratio of consolidated indebtedness to consolidated EBITDA will increase to 5.5 to 1.0 for the quarter of the acquisition and the three following quarters. Borrowings under the new credit facility bear interest at the Partnership’s option at the Eurodollar Rate (the LIBOR Rate) plus an applicable margin or the Base Rate (the highest of the Federal Funds Rate plus 0.50%, the 30-day Eurodollar Rate plus 1.0%, or the administrative agent’s prime rate) plus an applicable margin. The applicable margins vary depending on the Partnership's credit rating. Upon breach by the Partnership of certain covenants governing the new credit facility, amounts outstanding under the new credit facility, if any, may become due and payable immediately.

(15) Subsequent Events

2022 Notes. On January 3, 2014, the Partnership instructed the trustee to deliver a notice of redemption for approximately $53.5 million in aggregate principal amount of its 2022 Notes (the “Redeemed Notes”), representing approximately 21% of the aggregate principal amount of the outstanding 2022 Notes. The Redeemed Notes were redeemed effective as of February 2, 2014 for a total redemption price equal to $1,083.32 per $1,000 principal amount redeemed. Following the completion of the redemption, approximately $196.5 million aggregate principal amount of the 2022 Notes remain outstanding.

Credit Facility. On February 20, 2014, the Partnership entered into a $1.0 billion unsecured revolving credit facility, which includes a $500.0 million letter of credit subfacility (the “new credit facility”). The Partnership's ability to borrow funds and obtain letters of credit under the new credit facility is conditioned upon, among other things. the closing of the Contribution and the prior or concurrent termination of the Partnership’s existing credit facility. Upon the termination of the existing credit facility, the liens securing the existing credit facility will be released and the Partnership’s subsidiaries will no longer guarantee its indebtedness and will be released as guarantors under the indentures governing the Partnership’s Senior Notes.

The new credit facility will mature on the fifth anniversary of the initial funding date, unless the Partnership requests, and the requisite lenders agree, to extend it pursuant to its terms. The new credit facility contains certain financial, operational and legal covenants. Among other things, these covenants include maintaining a ratio of consolidated indebtedness to consolidated EBITDA (as defined in the new credit facility, which definition includes projected EBITDA from certain capital expansion projects) of no more than 5.0 to 1.0. If the Partnership consummates one or more acquisitions in which the aggregate purchase price is $50.0 million or more, the maximum allowed ratio of consolidated indebtedness to consolidated EBITDA will increase to 5.5 to 1.0 for the quarter of the acquisition and the three following quarters.

Borrowings under the new credit facility bear interest at the Partnership’s option at the Eurodollar Rate (the LIBOR Rate) plus an applicable margin or the Base Rate (the highest of the Federal Funds Rate plus 0.50%, the 30-day Eurodollar Rate plus 1.0%, or the administrative agent’s prime rate) plus an applicable margin. The applicable margins vary depending on the Partnership's credit rating. Upon breach by the Partnership of certain covenants governing the new credit facility, amounts outstanding under the new credit facility, if any, may become due and payable immediately.