OTHER INTANGIBLE ASSETS, NET

12 Months Ended

Dec. 31, 2021

Intangible Assets, Net (Excluding Goodwill) [Abstract]

OTHER INTANGIBLE ASSETS, NET

9. OTHER INTANGIBLE ASSETS, NET

Intangible assets are generally the result of acquisitions and consist primarily of purchased technology, customer related intangibles, and trademarks. Intangible assets are amortized over useful lives that generally range between 1 and 20 years.

The following tables present the cumulative composition of the Corporation’s intangible assets as of December 31, 2022 and December 31, 2021, respectively.

	2022						2021
(In thousands)	Gross		Accumulated Amortization		Net		Gross		Accumulated Amortization		Net
Technology	$	306,160	$	(176,675)	$	129,485	$	274,615	$	(164,077)	$	110,538
Customer-related intangibles	666,638		(298,160)		368,478		568,720		(270,816)		297,904
Programs (1)	144,000		(34,200)		109,800		144,000		(27,000)		117,000
Other intangible assets	53,879		(40,745)		13,134		49,559		(36,924)		12,635
Total	$	1,170,677	$	(549,780)	$	620,897	$	1,036,894	$	(498,817)	$	538,077

(1) Programs include values assigned to major programs of acquired businesses and represent the aggregate value associated with the customer relationships, contracts, technology, and trademarks underlying the associated program.

During the year ended December 31, 2022, the Corporation acquired intangible assets of $147 million as a result of the Corporation's Keronite and arresting systems acquisitions, which included Customer-related intangibles of $106 million, Technology of $36 million, and Other intangible assets of $5 million. The weighted average amortization periods for these aforementioned intangible assets are 16.1 years, 14.9 years, and 10.0 years, respectively. During the year ended December 31, 2021, the Corporation did not acquire any intangible assets. However, as a result of finalizing the purchase price allocation related to the Corporation's acquisition of PacStar, approximately $12 million of intangible assets were reclassified to goodwill during 2021.

Amortization expense for the years ended December 31, 2022, 2021, and 2020 was $61 million, $60 million, and $61 million, respectively. The estimated future amortization expense of intangible assets over the next five years is as follows:

(In millions)
2023	$	65
2024	$	56
2025	$	54
2026	$	53
2027	$	50