Intangible assets

3 Months Ended

Mar. 31, 2023

Intangible assets

Intangible assets

6. INTANGIBLE ASSETS

	March 31, 2023						December 31, 2022
	Gross carrying value		Accumulated amortization		Net carrying value		Gross carrying value		Accumulated amortization		Net carrying value
Customer relationships	$	615	$	(245)	$	370	$	615	$	(234)	$	381
Software		483		(179)		304		461		(174)		287
Technologies		49		(15)		34		49		(14)		35
Trade names and other		28		(14)		14		28		(13)		15
Intangible assets	$	1,175	$	(453)	$	722	$	1,153	$	(435)	$	718

Amortization expense related to intangible assets was $21 million and $49 million for the three months ended March 31, 2023 and 2022.