Quarterly Distributions of Available Cash (Tables)

12 Months Ended

Sep. 30, 2011

Quarterly Distributions of Available Cash [Abstract]

Quarterly distributions of available cash per limited partner unit

	2011		2010		2009
1st Quarter	$	0.705	$	0.670	$	0.64
2nd Quarter		0.705		0.670		0.64
3rd Quarter		0.740		0.705		0.67
4th Quarter		0.740		0.705		0.84