Inventories (Tables)

9 Months Ended

Sep. 30, 2013

Inventories [Abstract]

Inventory Amounts by Product Type

	September 30, 2013		December 31, 2012
NGLs	$	1,085.8	$	594.3
Petrochemicals and refined products		448.2		304.5
Crude oil		254.8		119.4
Natural gas		73.6		70.2
Total	$	1,862.4	$	1,088.4

Cost of Sales and Lower of Cost or Market Adjustments

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2013		2012		2013		2012
Cost of sales (1)	$	10,371.3	$	8,794.0	$	29,522.1	$	26,655.0
Lower of cost or market adjustments		4.5		2.2		14.9		16.1
(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.