Intangible Assets ,net

9 Months Ended

Sep. 30, 2018

Goodwill and Intangible Assets

Intangible Assets, net

12.    Intangible Assets, Net

	September 30,		December 31,
($ in millions)	2018		2017
Acquired Rexam intangibles (net of accumulated amortization of $362 million at September 30, 2018, and $246 million at December 31, 2017)	$	2,129	$	2,303
Capitalized software (net of accumulated amortization of $142 million at September 30, 2018, and $129 million at December 31, 2017)		81		84
Other intangibles (net of accumulated amortization of $135 million at September 30, 2018, and $163 million at December 31, 2017)		37		75
	$	2,247	$	2,462

Total amortization expense of intangible assets amounted to $50 million and $154 million for the three and nine months ended September 30, 2018, respectively, and $49 million and $166 million for the comparable periods in 2017, respectively. During the first nine months of 2017, cumulative catch-up amortization recorded as a result of the change in the value of intangible assets associated with the finalization of the valuation for the Rexam acquisition was $15 million, all of which related to the last six months of 2016.