Goodwill, Customer Relationships and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Goodwill

Goodwill, customer relationships and other intangible assets consisted of the following:

	September 30, 2024		December 31, 2023
	(Dollars in millions)
Goodwill	$	1,964	1,964
Indefinite-lived intangible assets	$	9	9
Other intangible assets subject to amortization:
Customer relationships, less accumulated amortization of $4,361 and $4,248(1)	3,346		3,811
Capitalized software, less accumulated amortization of $4,112 and $4,045(1)	1,536		1,564
Trade names, patents and other, less accumulated amortization of $82 and $72	76		86
Total other intangible assets, net	$	4,967	5,470

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(1)    Certain customer relationships with a gross carrying value of $352 million and capitalized software with a gross carrying value of $153 million became fully amortized during 2023 and were retired during the first quarter of 2024.

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

We estimate that future total amortization expense for finite-lived intangible assets will be as follows:

	(Dollars in millions)
2024 (remaining three months)	$	238
2025	901
2026	848
2027	760
2028	690
2029 and thereafter	1,521
Total finite-lived intangible assets future amortization expense	$	4,958