Equity (Schedule Of Distribution Levels And Distribution Allocations Between The General Partner And The Holders Of The Partnership's Limited Partner Units) (Details) (USD $)	Mar. 31, 2012
Distribution Made to Member or Limited Partner [Line Items]
Marginal Percentage Interest in Distributions (General Partner)	2.00%
Minimum Quarterly Distribution [Member]
Distribution Made to Member or Limited Partner [Line Items]
Total Quarterly Distribution Target Amount	0.1500
Marginal Percentage Interest in Distributions (General Partner)	2.00%
Marginal Percentage Interest in Distributions (Unitholders)	98.00%
First Target Distribution [Member]
Distribution Made to Member or Limited Partner [Line Items]
Total Quarterly Distribution Target Amount	0.1667
Marginal Percentage Interest in Distributions (General Partner)	2.00%
Marginal Percentage Interest in Distributions (Unitholders)	98.00%
Second Target Distribution [Member]
Distribution Made to Member or Limited Partner [Line Items]
Marginal Percentage Interest in Distributions (General Partner)	15.00%	[1]
Marginal Percentage Interest in Distributions (Unitholders)	85.00%
Second Target Distribution [Member] | Maximum [Member]
Distribution Made to Member or Limited Partner [Line Items]
Total Quarterly Distribution Target Amount	0.1917
Second Target Distribution [Member] | Minimum [Member]
Distribution Made to Member or Limited Partner [Line Items]
Total Quarterly Distribution Target Amount	0.1667
Third Target Distribution [Member]
Distribution Made to Member or Limited Partner [Line Items]
Marginal Percentage Interest in Distributions (General Partner)	37.00%	[1]
Marginal Percentage Interest in Distributions (Unitholders)	63.00%
Third Target Distribution [Member] | Maximum [Member]
Distribution Made to Member or Limited Partner [Line Items]
Total Quarterly Distribution Target Amount	0.5275
Third Target Distribution [Member] | Minimum [Member]
Distribution Made to Member or Limited Partner [Line Items]
Total Quarterly Distribution Target Amount	0.1917
Thereafter [Member]
Distribution Made to Member or Limited Partner [Line Items]
Total Quarterly Distribution Target Amount	0.5275
Marginal Percentage Interest in Distributions (General Partner)	50.00%	[1]
Marginal Percentage Interest in Distributions (Unitholders)	50.00%

[1] Includes Sunoco's 2-percent general partner interest.