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Intangible Assets

12 Months Ended

Dec. 31, 2022

Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract]

Intangible AssetsIntangible assets as of December 31, 2022, consist of the following (in millions):


	Cost		Accumulated Amortization		Net
Customer relationships	$	17,635	$	(8,932)	$	8,703
Trademarks and other	625		(372)		253
Total Intangible assets, net	$	18,260	$	(9,304)	$	8,956

Intangible assets as of December 31, 2021, consist of the following (in millions):


	Cost		Accumulated Amortization		Net
Customer relationships	$	18,287	$	(7,122)	$	11,165
Trademarks and other	632		(258)		374
Total Intangible assets, net	$	18,919	$	(7,380)	$	11,539

Amortization expense for intangible assets with finite lives was $2,170 million, $2,383 million and $2,400 million for the years ended December 31, 2022, 2021 and 2020, respectively.

Estimated amortization of intangible assets for the next five years is as follows (in millions):


2023	$	1,977
2024	1,783
2025	1,618
2026	1,160
2027	1,025