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Benefit Plans Benefit Plans (Weighted Average Assumptions) (Details) | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015
U.S. Defined Benefit Plans |  |  |
Benefit Obligation: |  |  |
Discount rate |  | 4.28% | 4.44%
Rate of compensation increase |  | 3.34% | 3.34%
Periodic Benefit Cost: |  |  |
Discount rate |  | 4.44% | 4.04%
Expected long-term rate of return on plan assets |  | 6.67% | 6.67%
Rate of compensation increase |  | 3.34% | 3.94%
Foreign Defined Benefit Plans |  |  |
Benefit Obligation: |  |  |
Discount rate | [1] | 10.08% | 11.35%
Rate of compensation increase |  | 6.41% | 6.31%
Periodic Benefit Cost: |  |  |
Discount rate |  | 11.37% | 10.47%
Expected long-term rate of return on plan assets |  | 9.54% | 9.77%
Rate of compensation increase |  | 6.40% | 6.33%
[1] | Includes an inflation factor that is used to calculate future periodic benefit cost, but is not used to calculate the benefit obligation.

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- Definition The interest rate used to adjust for the time value of money for the plan. + 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)(1) -URI http://asc.fasb.org/extlink&oid=65897934&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=65897934&loc=d3e1928-114920 + 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 Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=65897934&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 Accounting Standards Codification -Glossary Expected Long-Term Rate of Return on Plan Assets -URI http://asc.fasb.org/extlink&oid=6512046 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)(3) -URI http://asc.fasb.org/extlink&oid=65897934&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=65897934&loc=d3e1928-114920 + Details
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