Condensed Consolidated Statements of Partner's Capital (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Beginning Balance	$ 1,468,560	$ 351,479
Net income	98,043	43,113
Net losses on derivative instruments	(2,693)	(14,153)
Reclassification of net losses on derivative instruments	(17,224)	(1,722)
Distributions	(80,732)	(44,891)
Unit-based compensation expense	856	287
Common Units issued in connection with incentive compensation plans, net of tax withheld	25	154
Ending Balance	1,501,283	337,711
Common
Beginning Balance	1,455,702	340,180
Beginning Balance (in units)	92,801,347	57,124,296
Net income	91,446	40,534
Distributions	(74,248)	(42,274)
Unit-based compensation expense	856	287
Common Units issued in connection with incentive compensation plans, net of tax withheld	18	153
Common Units issued in connection with incentive compensation plans, net of tax withheld (in units)	11,070	3,500
Ending Balance	1,473,774	338,880
Ending Balance (in units)	92,812,417	57,127,796
Noncontrolling interest
Beginning Balance	39,452	12,823
Net income	1,378	588
Net losses on derivative instruments	(27)	(143)
Reclassification of net losses on derivative instruments	(174)	(17)
Distributions	(1,439)	(608)
Ending Balance	39,538	12,677
Total AmeriGas Partners, L.P. partners' capital
Beginning Balance	1,429,108	338,656
Net income	96,665	42,525
Net losses on derivative instruments	(2,666)	(14,010)
Reclassification of net losses on derivative instruments	(17,050)	(1,705)
Distributions	(79,293)	(44,283)
Unit-based compensation expense	856	287
Common Units issued in connection with incentive compensation plans, net of tax withheld	25	154
Ending Balance	1,461,745	325,034
General partner
Beginning Balance	16,975	3,436
Net income	5,219	1,991
Distributions	(5,045)	(2,009)
Common Units issued in connection with incentive compensation plans, net of tax withheld	7	1
Ending Balance	17,156	3,419
Accumulated other comprehensive income (loss)
Beginning Balance	(43,569)	(4,960)
Net losses on derivative instruments	(2,666)	(14,010)
Reclassification of net losses on derivative instruments	(17,050)	1,705
Ending Balance	$ (29,185)	$ (17,265)