XML 47 R32.htm IDEA: XBRL DOCUMENT v3.3.1.900
Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2015
Accounting Policies [Abstract]  
Estimated Useful Lives of Assets

Property, plant and equipment is recorded at cost, less accumulated depreciation and amortization. We provide for depreciation and amortization using the straight-line method by charges to operations in amounts that allocate the cost of the assets over their estimated useful lives as follows:

 

Asset Classification

   Estimated
Useful Life
 

Buildings and improvements

     10-30 years   

Machinery and equipment

     5-10 years   

Rolling stock

     5-10 years   

Containers

     5-12 years   

Furniture and Fixtures

     3-8 years