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Discontinued Operations (Tables)
3 Months Ended
Mar. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]  
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block]
Net sales and earnings from discontinued operations are presented in the table below for the three months ended March 31, 2013:
 
Three Months
Ended March 31
($ in millions)
2013
Net sales
$
108

 
 
Income from operations
$

Net gain from separation and merger of commodity chemicals business
2,192

Income tax expense
(1
)
Income from discontinued operations, net of tax
$
2,191

Less: Net income attributable to non-controlling interests, discontinued operations

Net income from discontinued operations (attributable to PPG)
$
2,191