Commitments and Contingent Liabilities (Details) (Asbestos Related Product Liability, USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2013 claims	Dec. 31, 2012 claims
Asbestos Related Product Liability
Number of claims filed
Pending claims, beginning of period	73,200	78,500
New claims filed	700	2,200
Claims settled/dismissed	(400)	(7,500)
Pending claims, end of period	73,500	73,200
Payments	$ 5	$ 18

The payments made in the period which reduced loss contingency liabilities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14326-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 9, 10, 11, 12

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

The number of claims settled and dismissed during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 9, 10, 11, 12

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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The total number of new claims filed pertaining to a loss contingency during the period.

+ References

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- Definition

The total amount of pending claims pertaining to a loss contingency accrual as of the balance sheet date.

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