Inventories (Notes)

3 Months Ended

Mar. 31, 2020

Inventory Disclosure [Abstract]

Inventories

. Inventories

Inventories were as follows: 

	March 31, 2020		December 31, 2019
	(millions)
Natural gas	$	17	$	19
NGLs	9		27
Total inventories	$	26	$	46

We recognize lower of cost or net realizable value adjustments when the carrying value of our inventories exceeds their estimated market value. These non-cash charges are a component of purchases and related costs in the condensed consolidated statements of operations. We recognized $4 million and $5 million of lower of cost or net realizable value adjustments during the three months ended March 31, 2020 and 2019, respectively.