TREASURY UNITS (Details)				1 Months Ended	9 Months Ended		109 Months Ended
	Mar. 10, 2015 shares	Aug. 08, 2008	Aug. 20, 2007 shares	Nov. 04, 2016 USD ($) $ / item shares	Sep. 30, 2016 USD ($) $ / item shares	Sep. 30, 2015 USD ($) shares	Sep. 30, 2016 USD ($) $ / item shares	Jan. 03, 2012	Mar. 06, 2008 shares	Jan. 30, 2008 shares	Jan. 15, 2008 shares
Treasury units					55,302		55,302
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
Number of depository receipts repurchased							1,352,427
Repurchase price of depository receipts (in dollars per receipt) | $ / item							26.81
Total cost of repurchase | $					$ 694,380	$ 2,516,061	$ 39,291,000
Subsequent event
Number of depository receipts repurchased				330
Repurchase price of depository receipts (in dollars per receipt) | $ / item				60.13
Repurchase price of units (in dollars per unit) | $ / item				1,803.90
Repurchase of depository receipts | $				$ 20,605
General Partnership
Treasury units					553		553
Fixed distribution percentage of unit holders					1.00%
Number of depository receipts repurchased							156
Total cost of repurchase | $					$ 6,783	$ 24,887
Value of units required to be repurchased | $					$ 6,783
Repurchases required (in units)					5
General Partnership | Subsequent event
Value of units required to be repurchased | $				$ 248
Repurchases required (in units)				0.1
Treasury Units
Units repurchased (in shares)					451	1,677
Class A
Treasury units					44,242		44,242
Number of units in each depository receipt			0.1					0.03333
Fixed distribution percentage of unit holders					80.00%
Repurchase price of depository receipts (in dollars per receipt) | $ / item					50.11
Repurchase price of units (in dollars per unit) | $ / item					1,503.26		804.30
Total cost of repurchase | $					$ 558,723	$ 2,018,329
Repurchase of depository receipts | $					$ 10,829
Class B
Treasury units					10,507		10,507
Fixed distribution percentage of unit holders					19.00%
Number of depository receipts repurchased							2,970
Total cost of repurchase | $					$ 128,874	$ 472,845
Value of units required to be repurchased | $					$ 128,874
Repurchases required (in units)					86
Class B | Subsequent event
Value of units required to be repurchased | $				$ 4,713
Repurchases required (in units)				2.6
Class B | General Partnership
Repurchase price of units (in dollars per unit) | $ / item							895.21