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Goodwill (Tables)
 9 Months Ended
Sep. 30, 2013
Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill by reporting unit for the nine months ended September 30, 2013 were as follows:

 

 

(Stated in millions)

 

 

Reservoir
Characterization

 

 

Drilling

 

 

Production

 

 

Total

 

Balance at December 31, 2012             

$

  3,760

 

 

$

  8,337

 

 

$

  2,488

 

 

$

  14,585

 

Acquisitions             

 

  4

 

 

 

  3

 

 

 

  247

 

 

 

  254

 

Divestiture of business             

 

—

 

 

 

—

 

 

 

(150

)

 

 

(150

)

Impact of changes in exchange rates             

 

(24

)

 

 

(23

)

 

 

(19

)

 

 

(66

)

Balance at September 30, 2013             

$

  3,740

 

 

$

  8,317

 

 

$

  2,566

 

 

$

  14,623