Condensed Consolidated Statement of Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net sales	$ 3,776	$ 3,660	$ 11,068	$ 10,853
Cost of sales, exclusive of depreciation and amortization	2,100	1,978	6,087	5,783
Selling, general and administrative	905	893	2,658	2,720
Depreciation	85	82	245	240
Amortization	32	31	95	91
Research and development, net	114	115	337	344
Interest expense	27	34	78	96
Interest income	(5)	(6)	(13)	(20)
Pension settlement charge	0	968	22	968
Asbestos settlement, net	0	0	0	5
Other charges	13	12	39	58
Other income	(16)	(21)	(112)	(80)
Income (loss) from continuing operations before income taxes	521	(426)	1,632	648
Income tax expense (benefit)	123	(220)	392	174
Income (loss) from continuing operations	398	(206)	1,240	474
Income from discontinued operations, net of tax	217	27	220	77
Net income (loss) attributable to the controlling and noncontrolling interests	615	(179)	1,460	551
Less: Net income attributable to noncontrolling interests	(6)	(5)	(16)	(18)
Net income (loss) (attributable to PPG)	609	(184)	1,444	533
Income (loss) from continuing operations, net of tax	392	(211)	1,224	456
Income from discontinued operations, net of tax	$ 217	$ 27	$ 220	$ 77
Income from continuing operations, net of tax (in usd per share)	$ 1.53	$ (0.79)	$ 4.76	$ 1.71
Income from discontinued operations, net of tax (in usd per share)	0.85	0.10	0.86	0.29
Net income (attributable to PPG) (in usd per share)	2.38	(0.69)	5.62	2.00
Income from continuing operations, net of tax (in usd per share)	1.52	(0.79)	4.73	1.69
Income from discontinued operations, net of tax (in usd per share)	0.84	0.10	0.85	0.29
Net income (attributable to PPG) (in usd per share)	2.36	(0.69)	5.58	1.98
Dividends per common share (in usd per share)	$ 0.45	$ 0.40	$ 1.25	$ 1.16