Commitments and Contingent Liabilities (Details) (Asbestos Related Product Liability [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011 claims		Dec. 31, 2010 claims		Dec. 31, 2009 claims
Asbestos Related Product Liability [Member]
Number of claims filed
Pending claims, beginning of period	83,700		90,200		99,000
New claims filed	2,200		1,700		1,600
Claims settled/dismissed	(7,400)		(8,200)		(10,400)
Pending claims, end of period	78,500		83,700		90,200
Payments	$ 23	[1]	$ 26	[1]	$ 20	[1]

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