9. OTHER NONCURRENT ASSETS
Other noncurrent assets consisted of the following (dollars in millions):
Debt issuance costs
Capitalized turnaround costs
Spare parts inventory
Amortization expense of catalyst assets for the years ended December 31, 2011, 2010 and 2009 was $12 million, $12 million and $14 million, respectively.
The entire disclosure for investments and other noncurrent assets.
No definition available.