Inventories (Tables)

9 Months Ended

Sep. 30, 2011

Inventories [Abstract]

Inventory Amounts by Product Type

 Our inventory amounts by product type were as follows at the dates indicated:

	September 30, 2011		December 31, 2010
NGLs	$	666.7	$	548.3
Petrochemicals and refined products		566.3		399.7
Crude oil		103.7		121.1
Natural gas		52.6		64.7
Other		--		0.2
Total	$	1,389.3	$	1,134.0

Cost of Sales and Lower of Cost or Market Adjustments

 The following table summarizes our cost of sales and lower of cost or market adjustments for the periods presented:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2011		2010		2011		2010
Cost of sales (1)	$	9,787.6	$	6,814.0	$	28,397.2	$	20,499.5
Lower of cost or market adjustments		5.1		0.2		6.8		7.1
(1)   Cost of sales is a component of “Operating costs and expenses,” as presented on our Unaudited Condensed Statements of Consolidated Operations. Period-to-period fluctuations in these amounts are primarily due to changes in energy commodity prices and sales volumes associated with our marketing activities.