Intangible Assets, Net

9 Months Ended

Sep. 30, 2021

Goodwill and Intangible Assets, Net

Intangible Assets, Net

12.    Intangible Assets, Net

	September 30,		December 31,
($ in millions)	2021		2020
Acquired customer relationships and other intangibles (net of accumulated amortization of $830 million at September 30, 2021, and $729 million at December 31, 2020)	$	1,642	$	1,785
Capitalized software (net of accumulated amortization of $186 million at September 30, 2021, and $196 million at December 31, 2020)		66		69
Other intangibles (net of accumulated amortization of $96 million at September 30, 2021, and $124 million at December 31, 2020)		24		29
	$	1,732	$	1,883

Total amortization expense of intangible assets amounted to $45 million for the three months ended September 30, 2021 and 2020, and $135 million and $134 million for the nine months ended September 30, 2021 and 2020, respectively.