Acquisitions (Additional Information) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013 Entity	Mar. 31, 2012	Jan. 31, 2012 European coatings company [Member] Facility	Jan. 31, 2012 Colpisa [Member]
Business Acquisition [Line Items]
Number of acquisitions made (in entities)	2
Purchase price	$ 202		$ 44	$ 38
Acquisition cost in assumed debt	120
Amount held in escrow			26	2
Assumed debt liability			120
Acquired cash	6		6
Manufacturing facilities			6
Business acquisitions, net of cash balances acquired	0	44
Asset acquired	$ 285