Earnings Per Unit (Tables)

12 Months Ended

Dec. 31, 2011

Earnings per unit:

Basic and Diluted Earnings Per Unit

The following table presents our calculation of basic and diluted earnings per unit for the periods presented:

	For Year Ended December 31,
	2011		2010		2009
BASIC EARNINGS PER UNIT
Numerator:
Net income attributable to partners	$	2,046.9	$	320.8	$	204.1
General partner interest in net income		--		*		*
Net income available to limited partners	$	2,046.9	$	320.8	$	204.1
Denominator:
Common units		820.5		274.1		206.7
Time-vested restricted common units		4.1		0.4		--
Total		824.6		274.5		206.7
Basic earnings per unit:
Net income attributable to partners	$	2.48	$	1.17	$	0.99
General partner interest in net income		--		*		*
Net income available to limited partners	$	2.48	$	1.17	$	0.99
DILUTED EARNINGS PER UNIT
Numerator:
Net income attributable to partners	$	2,046.9	$	320.8	$	204.1
General partner interest in net income		--		*		*
Net income available to limited partners	$	2,046.9	$	320.8	$	204.1
Denominator:
Common units		820.5		274.1		206.7
Time-vested restricted common units		4.1		0.4		--
Class B units		4.5		0.5		--
Designated Units		29.5		3.4		--
Incremental option units		1.3		0.1		--
Total		859.9		278.5		206.7
Diluted earnings per unit:
Net income attributable to partners	$	2.38	$	1.15	$	0.99
General partner interest in net income		--		*		*
Net income available to limited partners	$	2.38	$	1.15	$	0.99
* Amount is negligible.