Reportable Segment Information (Segment Net Sales and Income) (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended	9 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Sep. 30, 2014	Jun. 30, 2015	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	$ 3,872		$ 3,935		$ 11,634	$ 11,653
Segment income (loss)	652		618		1,896	1,742
Interest expense, net of interest income	(21)		(34)		(63)	(104)
Transaction-related (costs) gain, net	(1)		(4)		(31)	(10)
Business restructuring	0	$ (140)	0	$ (140)	(140)	0
Legacy items	(14)		(25)		(32)	(46)
Corporate	(35)		(56)		(167)	(187)
Income before income taxes	581		499		1,463	1,395
Performance Coatings Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	2,240		2,257		6,705	6,607
Segment income (loss)	379		345		1,052	966
Business restructuring				(77)
Industrial Coatings Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	1,354		1,395		4,105	4,208
Segment income (loss)	241		240		745	728
Business restructuring				(55)
Glass Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	278		283		824	838
Segment income (loss)	$ 32		$ 33		$ 99	$ 48
Business restructuring				$ (4)