Reportable Segment Information (Segment Net Sales and Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	$ 4,100	$ 4,082	$ 7,762	$ 7,718
Segment income (loss)	708	641	1,244	1,124
Legacy items	(6)	(11)	(18)	(21)
Business restructuring	(140)	0	(140)	0
Acquisition-related (costs) gain, net	(21)	(3)	(30)	(6)
Interest expense, net of interest income	(24)	(35)	(42)	(70)
Other unallocated corporate expense - net	(65)	(68)	(132)	(131)
Income before income taxes	452	524	882	896
Performance Coatings Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	2,410	2,343	4,465	4,350
Segment income (loss)	411	373	673	621
Business restructuring	(77)
Industrial Coatings Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	1,411	1,450	2,751	2,813
Segment income (loss)	260	257	504	488
Business restructuring	(55)
Glass Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	279	289	546	555
Segment income (loss)	37	$ 11	$ 67	$ 15
Business restructuring	$ (4)