Condensed Consolidated Statement of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net sales	$ 3,331	$ 3,333
Cost of sales, exclusive of depreciation and amortization	1,947	1,946
Selling, general and administrative	797	823
Depreciation	81	79
Amortization (Note 7)	26	29
Research and development	115	110
Interest expense	53	51
Interest income	(10)	(10)
Business restructuring (Note 8)	0	208
Asbestos settlement – net (Note 20)	3	3
Other charges (Note 20)	25	170
Other earnings	(24)	(29)
Income (loss) before income taxes	318	(47)
Income tax expense (benefit) (Note 12)	64	(31)
Income (loss) from continuing operations	254	(16)
Income from discontinued operations, net of income taxes (Note 5)	2,191	67
Net income attributable to the controlling and noncontrolling interests	2,445	51
Less: Net income attributable to noncontrolling interests	(35)	(38)
Net income (attributable to PPG)	2,410	13
Income (loss) from continuing operations, net of tax	219	(50)
Income from discontinued operations, net of tax (Note 5)	$ 2,191	$ 63
Income (loss) from continuing operations, net of tax	$ 1.50	$ (0.33)
Income from discontinued operations, net of tax	$ 14.99	$ 0.41
Net income (attributable to PPG)	$ 16.49	$ 0.08
Income (loss) from continuing operations, net of tax	$ 1.48	$ (0.32)
Income from discontinued operations, net of tax	$ 14.83	$ 0.40
Net income (attributable to PPG)	$ 16.31	$ 0.08
Dividends per common share	$ 0.59	$ 0.57