Intangibles

6 Months Ended

Jun. 30, 2023

(6) Intangibles:

We consider whether the carrying values of finite-lived intangible assets and property plant and equipment may not be recoverable or whether the carrying value of certain indefinite-lived intangible assets were impaired. There was no impairment of either intangibles or property plant and equipment as of June 30, 2023 and 2022.

The balances of these assets as of June 30, 2023 and December 31, 2022 was as follows:



	June 30, 2023						December 31, 2022
	Gross Carrying		Accumulated		Net Carrying		Gross Carrying		Accumulated		Net Carrying
($ in millions)	Amount		Amortization		Amount		Amount		Amortization		Amount

Intangibles:
Customer Relationships - Business	$	800	$	(158)	$	642	$	800	$	(121)	$	679
Customer Relationships - Wholesale		3,491		(472)		3,019		3,491		(364)		3,127
Trademarks & Tradenames		150		(65)		85		150		(50)		100
Total other intangibles	$	4,441	$	(695)	$	3,746	$	4,441	$	(535)	$	3,906

Amortization expense was as follows:


	For the three months ended ‎June 30,				For the six months ended June 30,
($ in millions)	2023		2022		2023		2022

Amortization expense	$	81	$	79	$	161	$	160

We amortize our intangible assets on a straight-line basis, over the assigned useful lives of 16 years for our wholesale customer relationships, 11 years for our business customer relationships, and five years for our trademarks and tradenames.