Intangible Assets

3 Months Ended

Jun. 30, 2011

Intangible Assets [Abstract]

Intangible Assets

9. Intangible Assets

Intangible assets principally comprise technology/technical know-how, tradenames and customer relationships. The gross book value, accumulated amortization and net book value of intangible assets were as follows:

	(Stated in millions)
	Jun. 30, 2011						Dec. 31, 2010
	Gross		Accumulated		Net Book		Gross		Accumulated		Net Book
	Book Value		Amortization		Value		Book Value		Amortization		Value
Technology/Technical Know-How	$	1,838	$	273	$	1,565	$	1,846	$	215	$	1,631
Tradenames		1,677		96		1,581		1,678		61		1,617
Customer Relationships		1,953		165		1,788		1,963		129		1,834
Other		358		296		62		378		298		80
	$	5,826	$	830	$	4,996	$	5,865	$	703	$	5,162

Amortization expense charged to income was as follows:

	(Stated in millions)
	2011		2010
Second Quarter	$	79	$	35
Six Months	$	163	$	63

The weighted average amortization period for all intangible assets is approximately 21 years.

Based on the net book value of intangible assets at June 30, 2011, amortization charged to income for the subsequent five years is estimated to be: remainder of 2011 — $164 million; 2012 — $308 million; 2013 — $294 million; 2014 — $287 million; 2015 — $273 million and 2016 — $254 million.