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Inventories
6 Months Ended
Jun. 30, 2020
Inventory Disclosure [Abstract]  
Inventories Inventories

Inventories consist of the following:
(In millions)
June 30, 2020
 
December 31, 2019
NGLs
$
2

 
$
5

Line fill
8

 
10

Spare parts, materials and supplies
105

 
95

Total inventories
$
115

 
$
110