Intangible Assets ,net

9 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets

Intangible Assets, net

10.    Intangible Assets, Net

	September 30,		December 31,
($ in millions)	2017		2016
Acquired Rexam intangibles (net of accumulated amortization of $203 million at September 30, 2017, and $62 million at December 31, 2016)	$	2,327	$	1,766
Capitalized software (net of accumulated amortization of $116 million at September 30, 2017, and $87 million at December 31, 2016)		82		79
Other intangibles (net of accumulated amortization of $160 million at September 30, 2017, and $143 million at December 31, 2016)		81		89
	$	2,490	$	1,934

Total amortization expense of intangible assets amounted to $49 million  and $166 million for the third quarter and first nine months of 2017, respectively, and $42 million and $62 million for the comparable periods in 2016, respectively. During the second quarter 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 related to the last six months of 2016.