Earnings Per Unit (Tables)

9 Months Ended

Sep. 30, 2013

Earnings Per Unit [Abstract]

Basic and Diluted Earnings Per Unit

	For the Three Months Ended September 30				For the Nine Months Ended September 30,
	2013		2012		2013		2012
BASIC EARNINGS PER UNIT
Numerator:
Net income attributable to limited partners	$	592.0	$	586.8	$	1,898.0	$	1,804.4
Denominator:
Weighted-average number of distribution-bearing    common units outstanding		896.3		859.3		889.1		857.9
Basic earnings per unit:
Net income attributable to limited partners	$	0.66	$	0.68	$	2.13	$	2.10
DILUTED EARNINGS PER UNIT
Numerator:
Net income attributable to limited partners	$	592.0	$	586.8	$	1,898.0	$	1,804.4
Denominator:
Weighted-average number of units outstanding:
Distribution-bearing common units		896.3		859.3		889.1		857.9
Class B units		1.9		4.5		3.6		4.5
Designated Units		23.7		26.1		23.7		26.1
Incremental option units		1.1		1.5		1.2		1.5
Total		923.0		891.4		917.6		890.0
Diluted earnings per unit:
Net income attributable to limited partners	$	0.64	$	0.66	$	2.07	$	2.03