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Property, Plant and Equipment (Tables)
 12 Months Ended
Dec. 31, 2019
Property, Plant and Equipment [Abstract]  
Schedule Of Property Plant And Equipment Property, Plant and Equipment
 
December 31,
(In millions)
2019
 
2018
United States
$
16,427

 
$
16,011

International(a)
493

 
710

Not allocated to segments
80

 
83

Net property, plant and equipment
$
17,000

 
$
16,804
Schedule of Projects with Exploratory Well Costs Capitalized for More than One Year
At December 31, 2019, 2018 and 2017 we had total deferred exploratory well costs as follows:
 
December 31,
(In millions)
2019
 
2018
 
2017
Amounts capitalized less than one year after completion of drilling
$
278

 
$
297

 
$
263

Amounts capitalized greater than one year after completion of drilling
—

 
—

 
32

Total deferred exploratory well costs
$
278

 
$
297

 
$
295

Number of projects with costs capitalized greater than one year after
completion of drilling
—

 
—

 
1

 
 
 
 
 
 
(In millions)
2019
 
2018
 
2017
Beginning balance
$
297

 
$
295

 
$
249

Additions
218

 
262

 
212

Charges to expense(a)
(5
)
 
(35
)
 
(64
)
Transfers to development
(230
)
 
(197
)
 
(102
)
Dispositions(b)
(2
)
 
(28
)
 
—

Ending balance
$
278

 
$
297

 
$
295


(a) 
2018 includes $32 million related to the Rodo well in Alba Block Sub Area B, offshore E.G. 2017 includes $64 million as a result of our agreement to sell Diaba License G4-223 in the Republic of Gabon (see Note 11 for further detail).
(b) 
2018 includes the sale of our Libya subsidiary.