TREASURY UNITS (Details)				1 Months Ended		3 Months Ended	9 Months Ended		97 Months Ended
	Mar. 10, 2015 shares	Aug. 08, 2008	Aug. 20, 2007 $ / item shares	Nov. 05, 2015 USD ($) $ / item shares	Nov. 03, 2015 USD ($) $ / item shares	Sep. 30, 2015 $ / item shares	Sep. 30, 2015 USD ($) $ / item shares	Sep. 30, 2014 USD ($) shares	Sep. 30, 2015 USD ($) $ / item shares	Jan. 03, 2012	Mar. 06, 2008 shares	Jan. 30, 2008 shares	Jan. 15, 2008 shares
Treasury units						54,249	54,249		54,249
Period for repurchase of depository receipts	5 years	12 months	12 months
Depository receipts authorized to be repurchased	2,000,000		300,000								1,500,000	900,000	600,000
Repurchase of depository receipts							40,237		1,327,153
Repurchase price of depository receipts | $ / item							49.47		26.37
Repurchase price of units | $ / item			851.67			851.67	1,484.10
Stock Buyback (in units)							1,677	1,080
Total cost of repurchase | $							$ 2,516,061	$ 1,564,397	$ 37,682,000
Repurchase of depository receipts | $							$ 2,018,329
Subsequent event
Repurchase of depository receipts				10,420	10,420
Repurchase price of depository receipts | $ / item				49.55	49.55
Repurchase price of units | $ / item				1,486.50	1,486.50
Repurchase of depository receipts | $				$ 524,967	$ 524,967
Class A
Treasury units						43,398	43,398		43,398
Number of units in each depository receipt			0.1							0.03333
Fixed distribution percentage of unit holders							80.00%
Repurchase price of units | $ / item			791.10			791.10
Total cost of repurchase | $							$ 2,018,329	1,258,399
Class B
Treasury units						10,308	10,308		10,308
Fixed distribution percentage of unit holders							19.00%
Repurchase of depository receipts			2,770			2,770
Total cost of repurchase | $							$ 472,845	290,698
Class B | Subsequent event
Stock Buyback (in units)				82.5	82.5
Total cost of repurchase | $				$ 122,624	$ 122,624
General Partnership
Treasury units						543	543		543
Fixed distribution percentage of unit holders							1.00%
Repurchase of depository receipts			146			146
Total cost of repurchase | $							$ 24,887	$ 15,300
General Partnership | Subsequent event
Stock Buyback (in units)				4.3	4.3
Total cost of repurchase | $				$ 6,454	$ 6,454