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Intangible Assets

12 Months Ended

Dec. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Gross carrying amounts and accumulated amortization of finite-lived intangible assets by major class were as follows:


	December 31, 2023						December 31, 2022
	Gross		Accumulated amortization		Net		Gross		Accumulated amortization		Net
Customer relationships	$	1,423	$	(670)	$	753	$	1,356	$	(542)	$	814
Trade names	539		(130)		409		530		(106)		424
Technology	159		(133)		26		157		(109)		48
Long term supply contracts	167		(99)		68		146		(76)		70
Patents	12		(10)		2		11		(9)		2
	$	2,300	$	(1,042)	$	1,258	$	2,200	$	(842)	$	1,358

During the year-ended December 31, 2023, $19 of customer relationship intangible assets were acquired from the acquisition of Helvetia Packaging AG. See N ote B for more information.

Amortization expense for the years ended December 31, 2023, 2022, and 2021 was $163, $159 and $165.

Annual amortization expense is estimated to be $152 for 2024, $148 for 2025, $139 for 2026, $136 for 2027 and $136 for 2028.