PARTNERS' CAPITAL (Details)			3 Months Ended								12 Months Ended
	Mar. 15, 2017 $ / item	Jan. 03, 2012	Dec. 31, 2016 $ / item	Sep. 30, 2016 $ / item	Jun. 30, 2016 $ / item	Mar. 31, 2016 $ / item	Dec. 31, 2015 $ / shares $ / item	Sep. 30, 2015 $ / item	Jun. 30, 2015 $ / item	Mar. 31, 2015 $ / item	Dec. 31, 2016 item $ / item	Dec. 31, 2015 $ / shares $ / item
Quarterly distributions per depositary receipt (in dollars per receipt)			0.25				0.25				0.25	0.25
Quarterly distribution per unit (in dollars per unit)			7.50				7.50				7.50	7.50
Distribution per unit (in dollars per unit) | $ / shares							$ 30.00					$ 30.00
Total distribution per unit (in dollars per unit)			54.00								54.00
Total distribution per depository receipt (in dollars per receipt)			1.80								1.80
Special distribution per unit (in dollars per unit)											24.00
Special distribution per depository receipt (in dollars per receipt)											0.80
Earnings per depository receipt
Net Income per Depositary Receipt (in dollars per receipt)			0.41	0.32	0.26	0.33	0.32	0.28	0.29	0.11	1.32	1.00
Distributions per Depositary Receipt (in dollars per share)							1.00					1.00
Limited Partner
Number of classes of partners | item											2
General Partnership
Number of classes of partners | item											1
Fixed distribution percentage of unit holders											1.00%
Class A
Fixed distribution percentage of unit holders											80.00%
Class B
Fixed distribution percentage of unit holders											19.00%
Class A
Forward split of depositary receipts		3
Exchange ratio of depositary receipts for partnership units before adjustment		10
Exchange ratio of depositary receipts for partnership units after adjustment		30
Number of units in each depository receipt		0.03333
Quarterly distribution per unit approved (in dollars per unit)	9.00
Quarterly distributions per depositary receipt (in dollars per receipt)	0.30
Earnings per depository receipt
Net Income per Depositary Receipt (in dollars per receipt)											1.32	1.00
Distributions per Depositary Receipt (in dollars per share)			1.80				1.00				1.80	1.00
Class B
Fixed distribution percentage of unit holders											19.00%