Commitments and Contingent Liabilities (Details) (Asbestos Related Product Liability [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012 claims	Dec. 31, 2011 claims	Dec. 31, 2010 claims
Asbestos Related Product Liability [Member]
Number of claims filed
Pending claims, beginning of period	78,500	83,700	90,200
New claims filed during the year	2,200	2,200	1,700
Claims settled/dismissed during the year	(7,500)	(7,400)	(8,200)
Pending claims, end of period	73,200	78,500	83,700
Payments	$ 18	$ 23	$ 26	[1]

[1] Represents amount spent by us and our insurers on asbestos litigation defense and claim resolution.