Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Estimated useful lives of property, plant and equipment

Depreciation is computed using the straight-line method over the following estimated useful lives:



Buildings and improvements	2 to 40 years
Machinery and equipment:
Computer software and equipment	1 to 5 years
Other machinery and equipment	3 to 10 years

Identifiable intangible and other assets that have finite lives are amortized over their estimated useful lives

We amortize intangible assets and other assets with finite lives over their respective estimated useful lives to their estimated residual values, as follows:



Asset	Useful Life
Deferred financing costs	Effective interest method
Customer relationships	Straight-line method up to 12 years
Patents and others	Straight-line method up to 20 years

- Definition

Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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