Per Unit Data (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Per Unit Data
Net Income attributable to Unitholders - Basic	$ 552,604	$ 475,708	$ 976,111	$ 874,975
Net Income attributable to Unitholders - Diluted	$ 552,604	$ 475,708	$ 976,111	$ 874,975
Weighted Average Number of Shares Outstanding - Basic and Diluted	362,762,067	363,604,376	363,270,587	363,308,313
Effect of dilutive securities:
Securities with dilutive effect	$ 0	$ 0	$ 0	$ 0