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EMPLOYEE RETIREMENT PLANS - Assumptions - Tabular Disclosure (Details) - Defined-benefit pension plans | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Assumptions |  |  |
Discount rate for obligations (as a percent) | 3.50% | 4.00% | 3.80%
Expected return on plan assets (as a percent) | 7.25% | 7.25% | 7.25%
Discount rate for net periodic pension cost (as a percent) | 4.00% | 3.80% | 4.40%

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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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