Condensed Consolidated Statement of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net sales	$ 4,095	$ 3,528	$ 7,426	$ 6,861
Cost of sales, exclusive of depreciation and amortization	2,343	2,066	4,290	4,012
Selling, general and administrative	981	792	1,778	1,615
Depreciation	90	76	171	155
Amortization (Note 7)	34	26	60	55
Research and development	124	113	239	223
Interest expense	47	50	100	101
Interest income	(9)	(9)	(19)	(19)
Business restructuring (Note 8)	0	0	0	208
Asbestos settlement – net (Note 20)	3	3	6	6
Other charges (Note 20)	23	16	48	186
Other earnings	(30)	(31)	(54)	(60)
Income before income taxes	489	426	807	379
Income tax expense (Note 12)	118	98	182	67
Income from continuing operations	371	328	625	312
Income from discontinued operations, net of income taxes (Note 5)	0	68	2,191	135
Net income attributable to the controlling and noncontrolling interests	371	396	2,816	447
Less: Net income attributable to noncontrolling interests	(30)	(34)	(65)	(72)
Net income (attributable to PPG)	341	362	2,751	375
Income from continuing operations, net of tax	341	297	560	247
Income from discontinued operations, net of tax (Note 5)	$ 0	$ 65	$ 2,191	$ 128
Income from continuing operations, net of tax	$ 2.38	$ 1.94	$ 3.86	$ 1.61
Income from discontinued operations, net of tax	$ 0.00	$ 0.43	$ 15.11	$ 0.84
Net income (attributable to PPG)	$ 2.38	$ 2.37	$ 18.97	$ 2.45
Income from continuing operations, net of tax	$ 2.35	$ 1.92	$ 3.82	$ 1.60
Income from discontinued operations, net of tax	$ 0.00	$ 0.42	$ 14.94	$ 0.82
Net income (attributable to PPG)	$ 2.35	$ 2.34	$ 18.76	$ 2.42
Dividends per common share	$ 0.61	$ 0.59	$ 1.20	$ 1.16