Inventories (Tables)

6 Months Ended

Jun. 30, 2022

Inventories [Abstract]

Inventory Amounts by Product Type

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

	June 30, 2022		December 31, 2021
NGLs	$	2,422	$	2,027
Petrochemicals and refined products		576		343
Crude oil		211		285
Natural gas		25		26
Total	$	3,234	$	2,681

Cost of Sales and Lower of Cost or Market Adjustments

Due to fluctuating commodity prices, we recognize lower of cost or net realizable value adjustments when the carrying value of our available-for-sale inventories exceeds their net realizable value.  The following table presents our total cost of sales amounts and lower of cost or net realizable value adjustments for the periods indicated:

	For the Three Months Ended June 30,						For the Six Months Ended June 30,
	2022			2021			2022			2021
Cost of sales (1)		$	12,908		$	6,840		$	23,006		$	13,103
Lower of cost or net realizable value adjustments    recognized in cost of sales			3			3			7			13

(1) Cost of sales is a component of “Operating costs and expenses” as presented on our Unaudited Condensed Statements of Consolidated Operations.  Fluctuations in these amounts are primarily due to changes in energy commodity prices and sales volumes associated with our marketing activities.