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Pension Plans and Other Postretirement Benefits (Details 2) | 12 Months Ended | 0 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended
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Dec. 31, 2013 Pension Benefits [Member] | Dec. 31, 2012 Pension Benefits [Member] | Dec. 31, 2011 Pension Benefits [Member] | Oct. 31, 2013 Pension Benefits [Member] Benefit changes [Member] | Oct. 29, 2013 Pension Benefits [Member] Benefit changes [Member] | May 08, 2011 Pension Benefits [Member] Benefit changes [Member] | May 10, 2011 Pension Benefits [Member] Benefit changes [Member] Series of Individually Immaterial Business Acquisitions [Member] | Dec. 31, 2013 Pension Benefits [Member] Minimum [Member] | Dec. 31, 2012 Pension Benefits [Member] Minimum [Member] | Dec. 31, 2011 Pension Benefits [Member] Minimum [Member] | Dec. 31, 2011 Pension Benefits [Member] Minimum [Member] Series of Individually Immaterial Business Acquisitions [Member] | Dec. 31, 2013 Pension Benefits [Member] Maximum [Member] | Dec. 31, 2012 Pension Benefits [Member] Maximum [Member] | Dec. 31, 2011 Pension Benefits [Member] Maximum [Member] | Dec. 31, 2013 Other Postretirement Benefits [Member] | Dec. 31, 2012 Other Postretirement Benefits [Member] | Dec. 31, 2011 Other Postretirement Benefits [Member] | Aug. 01, 2011 Other Postretirement Benefits [Member] Benefit changes [Member] | May 08, 2011 Other Postretirement Benefits [Member] Benefit changes [Member] | May 10, 2011 Other Postretirement Benefits [Member] Benefit changes [Member] Series of Individually Immaterial Business Acquisitions [Member] | Dec. 31, 2011 Other Postretirement Benefits [Member] Minimum [Member] Series of Individually Immaterial Business Acquisitions [Member] | Dec. 31, 2011 Other Postretirement Benefits [Member] Maximum [Member]
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  | 5.00% | [1],[2] |  | 4.95% | 4.25% | 5.80% | 5.45% | 4.25% | [1],[2] |  |  | 5.45% | [1],[2] | 4.95% | [1],[2] |  | 5.80% | [1],[2] | 4.25% | [1],[2] | 5.00% | [1],[2] |  |  | 5.80% | 5.45% | 5.45% | [1],[2] | 5.80% | [1],[2]
Rate of increase in future compensation levels |  |  |  |  |  |  |  |  | 3.00% |  | 3.00% | 2.50% |  |  | 3.50% |  | 4.50% | 4.50% |  | 0.00% |  | 0.00% |  | 0.00% |  |  |  |  |  |  |
Expected long-term rate of return on assets | 8.25% | 8.50% |  | 8.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8.30% |  | 8.30% |  | 8.30% |  |  |  |  |  |  |
Discount rate due to change in benefits |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.055 |  |  |  |  |  |
[1] | Pension and other postretirement benefit expense for 2011 was initially measured at a 5.8% discount rate. The Ladish pension and other postretirement benefit plans acquired on May 9, 2011 were valued using a 5.45% discount rate. Certain other postretirement benefit plan obligations were remeasured as of August 1, 2011 using a 5.5% discount rate as a result of benefit changes.
[2] | Pension expense for 2013 was initially measured at a 4.25% discount rate. The U.S. qualified pension plan was remeasured using a 4.95% discount rate as of October 31, 2013, following the sale of the tungsten materials business.

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- Definition The measurement date for determining rate assumptions used in calculating the net periodic benefit cost (such as the weighted-average expected long-term rate of return on plan assets and the discount rate) is normally the beginning of the year measurement date. If an assumed rate(s) changes due to a subsequent interim measurement of both plan assets and obligations, disclosure of the beginning and more recently assumed rate(s), or a properly weighted combination of the two. Disclosure may include the more recent measurement date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2919-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Implementation Guide (Q and A) -Number FAS87 -Paragraph 79 -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. + Details
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- Definition The interest rate used to adjust for the time value of money. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph j -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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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- Definition An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 -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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph j -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. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Glossary Expected Long-Term Rate of Return on Plan Assets -URI http://asc.fasb.org/extlink&oid=6512013 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(3) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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- Definition Expected rate of compensation increases (for pay-related plans). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(2) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph j -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. + Details
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