Intangible Assets

9 Months Ended

Sep. 30, 2022

Goodwill And Intangible Assets Disclosure [Abstract]

Intangible Assets

6.   Intangible Assets

The gross book value, accumulated amortization and net book value of intangible assets were as follows:

	(Stated in millions)
	Sept. 30, 2022						Dec. 31, 2021
	Gross		Accumulated		Net Book		Gross		Accumulated		Net Book
	Book Value		Amortization		Value		Book Value		Amortization		Value
Customer relationships	$	1,694	$	617	$	1,077	$	1,681	$	551	$	1,130
Technology/technical know-how		1,285		658		627		1,264		562		702
Tradenames		759		215		544		766		191		575
Other		1,635		840		795		1,578		774		804
	$	5,373	$	2,330	$	3,043	$	5,289	$	2,078	$	3,211

Amortization expense charged to income was as follows:

(Stated in millions)
	2022		2021
Third Quarter	$	76	$	75
Nine Months	$	226	$	226

Based on the net book value of intangible assets at September 30, 2022, amortization expense for the subsequent five years is estimated to be: fourth quarter of 2022—$72 million; 2023—$288 million; 2024—$278 million; 2025—$263 million; 2026—$254 million; and 2027—$252 million.