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Divestitures and Assets Held for Sale Divestitures and Assets Held for Sale (Tables)
12 Months Ended
Dec. 31, 2018
Property, Plant and Equipment [Abstract]  
Schedule of Proceeds Received and Gains (Losses) Recognized on Divestitures
The following summarizes the proceeds received and gains (losses) recognized on divestitures and assets held for sale for the years ended December 31:
millions
2018

 
2017

 
2016

Proceeds received, net of closing adjustments
$
417

 
$
4,008

 
$
2,356

Gains (losses) on divestitures, net (1) (2)
20

 
674

 
(757
)

(1) 
Includes goodwill allocated to divestitures of $209 million in 2017 and $397 million in 2016.
(2) 
Includes gain of $126 million related to the 2017 property exchange discussed below.