Rendering

Component: (Network and Table)
Network
100610 - Disclosure - Plant Closures and Discontinued Operations - Summary of Restructuring Activities and Related Reserves (Detail)
(http://www.koppers.com/20161231/taxonomy/role/DisclosurePlantClosuresAndDiscontinuedOperationsSummaryOfRestructuringActivitiesAndRelatedReservesDetail)
TableSchedule Of Restructuring And Related Costs [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001315257 (http://www.sec.gov/CIK)
Restructuring Cost and Reserve [Line Items]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
Restructuring TypeRestructuring Type
Severance and Employee Benefits [Member]Environmental Remediation [Member]Asset Retirement [Member]Other [Member]Type of RestructuringSeverance and Employee Benefits [Member]Environmental Remediation [Member]Asset Retirement [Member]Other [Member]Type of Restructuring
Reserve, Beginning Balance
2,000,000  
4,300,000  
21,900,000  
0  
28,200,000  
0  
4,100,000  
3,900,000  
100,000  
8,100,000  
Accrual
2,400,000  
100,000  
5,600,000  
5,600,000  
13,700,000  
2,200,000  
600,000  
23,400,000  
1,300,000  
27,500,000  
Costs charged against assets
0  
0  
0  
(1,900,000) 
(1,900,000) 
0  
0  
0  
(1,300,000) 
(1,300,000) 
Reversal of accrued charges
(1,900,000) 
(500,000) 
(8,700,000) 
(100,000) 
(11,200,000) 
0  
0  
(300,000) 
0  
(300,000) 
Cash paid
(1,000,000) 
(2,400,000) 
(8,100,000) 
(200,000) 
(11,700,000) 
(200,000) 
0  
(4,800,000) 
(100,000) 
(5,100,000) 
Currency translation
(100,000) 
0  
(700,000) 
(200,000) 
(1,000,000) 
0  
(400,000) 
(300,000) 
0  
(700,000) 
Reserve, Ending Balance
1,400,000  
 
1,500,000  
 
10,000,000  
 
3,200,000  
 
16,100,000  
 
2,000,000  
 
4,300,000  
 
21,900,000  
 
0  
 
28,200,000