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Goodwill (Tables)
 6 Months Ended
Jun. 30, 2014
Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill by reporting unit for the six months ended June 30, 2014 were as follows:

 

 

(Stated in millions)

 

 

Reservoir

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Characterization

 

 

Drilling

 

 

Production

 

 

Total

 

Balance at December 31, 2013

$

3,737

 

 

$

8,315

 

 

$

2,654

 

 

$

14,706

 

Acquisitions

 

17

 

 

 

223

 

 

 

275

 

 

 

515

 

Reallocation

 

83

 

 

 

(83

)

 

 

—

 

 

 

—

 

Impact of changes in exchange rates

 

(1

)

 

 

—

 

 

 

—

 

 

 

(1

)

Balance at June 30, 2014

$

3,836

 

 

$

8,455

 

 

$

2,929

 

 

$

15,220