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RETIREMENT BENEFITS PLANS - Benefits Expense (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Pension plans |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans |  |  |
Total expense (income) | $ 66 |  | $ 165
Pension plans | United States |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans |  |  |
Service cost | 37 | $ 97 | 91
Interest cost | 70 | 103 | 138
Expected return on plan assets | (223) | (231) | (235)
Amortization | 36 | 102 | 62
Benefit plans | (80) | 71 | 56
Settlements, curtailments and special termination benefits | 65 | 62 | 48
Total expense (income) | (15) | 133 | 104
Pension plans | Foreign Plan |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans |  |  |
Service cost | 72 | 73 | 58
Interest cost | 40 | 45 | 57
Expected return on plan assets | (120) | (109) | (106)
Amortization | 71 | 60 | 38
Benefit plans | 63 | 69 | 47
Settlements, curtailments and special termination benefits | 17 | 10 | 14
Total expense (income) | 80 | 79 | 61
Other postretirement benefits plans |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans |  |  |
Service cost | 1 | 2 | 2
Interest cost | 6 | 9 | 14
Expected return on plan assets | 0 | 0 | (2)
Amortization | (5) | (13) | (14)
Benefit plans | 2 | (2) | 0
Settlements, curtailments and special termination benefits | (1) | 0 | 0
Total expense (income) | 1 | $ (2) | 0
Automotive Fluid Conveyance Business | Pension plans |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans |  |  |
Settlements, curtailments and special termination benefits |  |  | $ 8
Hydraulics Business | Pension plans |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans |  |  |
Settlements, curtailments and special termination benefits | $ 13 |  |

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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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 3A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123453770&loc=SL108413299-114919 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(4) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4587-114921 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920 + 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/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4587-114921 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 3A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123453770&loc=SL108413299-114919 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920 + Details
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