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RETIREMENT BENEFIT PLANS (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016 | Dec. 31, 2017
United States pension benefit expense |  |  |  |  |
Retirement benefits plans expense |  |  |  |  |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  | $ 370 |  |
Pension plan | United States pension benefit expense |  |  |  |  |
Retirement benefits plans expense |  |  |  |  |
Service cost | $ 24 | $ 28 | 72 | $ 83 |
Interest cost | 30 | 31 | 92 | 94 |
Expected return on plan assets | (61) | (63) | (183) | (188) |
Amortization | 21 | 23 | 62 | 69 |
Total | 14 | 19 | 43 | 58 |
Settlements and other | 17 | 24 | 51 | 63 |
Total expense | 31 | 43 | 94 | 121 |
Pension plan | Non-United States pension benefit expense |  |  |  |  |
Retirement benefits plans expense |  |  |  |  |
Service cost | 18 | 16 | 53 | 49 |
Interest cost | 14 | 16 | 41 | 48 |
Expected return on plan assets | (24) | (23) | (70) | (71) |
Amortization | 13 | 8 | 38 | 25 |
Total | 21 | 17 | 62 | 51 |
Settlements and other | 4 | 0 | 4 | 0 |
Total expense | 25 | 17 | 66 | 51 |
Other postretirement benefits expense |  |  |  |  |
Retirement benefits plans expense |  |  |  |  |
Service cost | 1 | 1 | 2 | 3 |
Interest cost | 4 | 4 | 11 | 13 |
Expected return on plan assets | (1) | (2) | (3) | (5) |
Amortization | (3) | (2) | (9) | (6) |
Total | 1 | 1 | 1 | 5 |
Settlements and other | 0 | 0 | 0 | 0 |
Total expense | $ 1 | $ 1 | $ 1 | $ 5 |
Scenario, Forecast [Member] | United States pension benefit expense |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined Benefit Plan, Expected Future Employer Contributions, Current Fiscal Year, Description |  |  |  |  | 375

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- Definition Total Benefit Plans. + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit 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 (h)(4) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of contribution received by defined benefit plan from employer which increases plan assets. + 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 (d)(5)(ii) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2709-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5)(iv)(01) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of cost of providing special or contractual termination benefits payable from defined benefit 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 (q) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Description of contributions expected to be received by defined benefit plan from employer in current fiscal year. Includes, but is not limited to, range of expected contributions, required minimum contributions and whether expected contributions are discretionary or noncash. + References No definition available. + Details
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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit 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 (h)(3) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit 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 (h)(1) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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