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Inventories (Notes)
6 Months Ended
Jun. 30, 2023
Inventory Disclosure [Abstract]  
Inventories InventoriesInventories were as follows:
June 30, 2023December 31, 2022
 (millions)
Natural gas$20 $47 
NGLs21 36 
Total inventories$41 $83 
We recognize the lower of cost or net realizable value adjustments when the carrying value of our inventories exceeds their net realizable value. These non-cash charges are a component of purchases and related costs in the condensed consolidated statements of operations. We recognized zero and $22 million lower of cost or net realizable value adjustments for the three and six months ended June 30, 2023, respectively. We recognized no lower of cost or net realizable value adjustments for the three and six months ended June 30, 2022.