Intangible Assets ,net

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets

Intangible Assets, net

11.  Intangibles Assets, net

	December 31,
($ in millions)	2016		2015
Acquired Rexam intangibles (net of accumulated amortization of $62 million at December 31, 2016)	$	1,766	$	—
Capitalized software (net of accumulated amortization of $87 million at December 31, 2016, and $116 million at December 31, 2015)		79		77
Other intangibles (net of accumulated amortization of $143 million at December 31, 2016, and $133 million at December 31, 2015)		89		118
	$	1,934	$	195

Total amortization expense of intangible assets amounted to $104 million, $39 million and $41 million for the years ended December 31, 2016, 2015 and 2014, respectively, of which 2016 included $65 million in amortization of the acquired intangible assets from Rexam. Based on intangible asset values and currency exchange rates as of December 31, 2016, total annual intangible asset amortization expense is expected to be $170 million, $161 million, $154 million, $149 million and $138 million for the years 2017 through 2021, respectively, and $1,162 million combined for all years thereafter. Of these amounts, total annual intangible asset amortization expense related to the Rexam acquired intangible assets is expected to be $127 million for each of the years 2017 through 2020, $124 million for 2021, and $1,134 million combined for all years thereafter.