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Other Items
 3 Months Ended
Mar. 31, 2016
Other Income and Expenses [Abstract]  
Other Items
Other Items
Net interest and other financial income (costs) was:
 
Three Months Ended 
 March 31,
(In millions)
2016
 
2015
Interest income
$
1

 
$
1

Interest expense(a)
(153
)
 
(80
)
Interest capitalized
16

 
8

Other financial costs
(6
)
 
(10
)
Net interest and other financial income (costs)
$
(142
)
 
$
(81
)

(a) 
The three months ended March 31, 2016 includes $11 million for the amortization of the discount related to the difference between the fair value and the principal amount of the assumed MarkWest debt.