INTANGIBLE ASSETS

9 Months Ended

Sep. 30, 2012

Intangible Assets [Abstract]

INTANGIBLE ASSETS DISCLOSURE

INTANGIBLE ASSETS

The following table provides information regarding the Corporation’s intangible assets:

Intangible Assets	At September 30, 2012							At December 31, 2011
In millions	Gross Carrying Amount		Accumulated Amortization			Net		Gross Carrying Amount		Accumulated Amortization			Net
Intangible assets with finite lives:
Licenses and intellectual property	$	33	$	(33	)	$	—	$	33	$	(33	)	$	—
Software	47		(39		)	8		116		(108		)	8
Total intangible assets	$	80	$	(72	)	$	8	$	149	$	(141	)	$	8

In the third quarter of 2012, the Corporation retired $71 million of fully amortized software.

Amortization expense for software, which is included in “Cost of sales” in the consolidated statements of income was $1 million in the third quarter of 2012 and $1 million in the third quarter of 2011. Amortization expense for software was $2 million for the nine months ended September 30, 2012 and $3 million for the nine months ended September 30, 2011. Amortization expense for intangible assets (not including software) was immaterial in the third quarters of 2012 and 2011, as well as year-to-date for 2012 and 2011.

Total estimated amortization expense for 2012 and the five succeeding fiscal years is as follows:

Estimated Amortization Expense In millions
2012	$	3
2013	$	3
2014	$	1
2015	$	1
2016	$	—
2017	$	—