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Inventories
3 Months Ended
Mar. 31, 2020
Inventory Disclosure [Abstract]  
Inventories Inventories

Inventories consist of the following:
(In millions)
March 31, 2020
 
December 31, 2019
NGLs
$
1

 
$
5

Line fill
6

 
10

Spare parts, materials and supplies
98

 
95

Total inventories
$
105

 
$
110