Goodwill

3 Months Ended

Mar. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill

Goodwill

The changes in the carrying amount of goodwill by reportable segment for the first quarter of 2016 were as follows:

(Dollars in millions)	North America		MENA/ Asia Pacific		Europe/ SSA/ Russia		Latin America		Land Drilling Rigs		Total
Balance at December 31, 2015	$	1,756	$	190	$	573	$	284	$	—	$	2,803
Foreign currency translation adjustments	52		2		6		1		—		61
Balance at March 31, 2016	$	1,808	$	192	$	579	$	285	$	—	$	2,864