Earnings Per Unit (Tables)

9 Months Ended

Sep. 30, 2012

Earnings Per Unit [Abstract]

Basic and Diluted Earnings Per Unit

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2012		2011		2012		2011
BASIC EARNINGS PER UNIT
Numerator:
Net income attributable to limited partners	$	586.8	$	471.4	$	1,804.4	$	1,325.8
Denominator:
Weighted-average number of:
Distribution-bearing common units outstanding		859.3		821.9		857.9		817.0
Basic earnings per unit:
Net income attributable to limited partners	$	0.68	$	0.57	$	2.10	$	1.62
DILUTED EARNINGS PER UNIT
Numerator:
Net income attributable to limited partners	$	586.8	$	471.4	$	1,804.4	$	1,325.8
Denominator:
Weighted-average number of:
Distribution-bearing common units outstanding		859.3		821.9		857.9		817.0
Class B units		4.5		4.5		4.5		4.5
Designated Units (see Note 10)		26.1		30.6		26.1		30.6
Incremental option units		1.5		1.2		1.5		1.2
Total		891.4		858.2		890.0		853.3
Diluted earnings per unit:
Net income attributable to limited partners	$	0.66	$	0.55	$	2.03	$	1.55