Inventories (Tables)

3 Months Ended

Mar. 31, 2012

Inventories [Abstract]

Inventory Amounts by Product Type

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

	March 31, 2012		December 31, 2011
NGLs	$	402.7	$	563.6
Petrochemicals and refined products		433.4		443.4
Crude oil		58.7		39.2
Natural gas		39.3		65.5
Total	$	934.1	$	1,111.7

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 March 31,
	2012		2011
Cost of sales (1)	$	9,665.8	$	8,819.3
Lower of cost or market adjustments		5.9		1.2
(1)   Cost of sales is a component of “Operating costs and expenses,” as presented on our Unaudited Condensed Statements of Consolidated Operations. Quarter-to-quarter fluctuations in these amounts are primarily due to changes in energy commodity prices and sales volumes associated with our marketing activities.