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ASSET IMPAIRMENTS AND RESTRUCTURING (Tables) | 12 Months Ended
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Dec. 31, 2017
Restructuring Costs and Asset Impairment Charges [Abstract] |
Schedule of Restructuring and Related Charges |
| For years ended December 31,
(Dollars in millions) | 2017 |  | 2016 |  | 2015
Asset impairments | $ | 1 |  |  | $ | 12 |  |  | $ | 85 |
Gain on sale of assets, net | — |  |  | (2 | ) |  | (1 | )
Intangible asset and goodwill impairments | — |  |  | — |  |  | 22 |
Severance charges | 6 |  |  | 32 |  |  | 68 |
Site closure and restructuring charges | 1 |  |  | 3 |  |  | 9 |
Total | $ | 8 |  |  | $ | 45 |  |  | $ | 183 |
Schedule of Changes to Restructuring Reserve and Related Activities |
| Balance at January 1, 2017 |  | Provision/ Adjustments |  | Non-cash Reductions/ Additions |  | Cash Reductions |  | Balance at December 31, 2017
Noncash charges | $ | — |  |  | $ | 1 |  |  | $ | (1 | ) |  | $ | — |  |  | $ | — |
Severance costs | 42 |  |  | 6 |  |  | — |  |  | (29 | ) |  | 19 |
Site closure & restructuring costs | 13 |  |  | 1 |  |  | 1 |  |  | (5 | ) |  | 10 |
Total | $ | 55 |  |  | $ | 8 |  |  | $ | — |  |  | $ | (34 | ) |  | $ | 29 |
| Balance at January 1, 2016 |  | Provision/ Adjustments |  | Non-cash Reductions/ Additions |  | Cash Reductions |  | Balance at December 31, 2016
Noncash charges | $ | — |  |  | $ | 12 |  |  | $ | (12 | ) |  | $ | — |  |  | $ | — |
Severance costs | 55 |  |  | 32 |  |  | — |  |  | (45 | ) |  | 42 |
Site closure & restructuring costs | 11 |  |  | 1 |  |  | 4 |  |  | (3 | ) |  | 13 |
Total | $ | 66 |  |  | $ | 45 |  |  | $ | (8 | ) |  | $ | (48 | ) |  | $ | 55 |
| Balance at January 1, 2015 |  | Provision/ Adjustments |  | Non-cash Reductions/ Additions |  | Cash Reductions |  | Balance at December 31, 2015
Noncash charges | $ | — |  |  | $ | 107 |  |  | $ | (107 | ) |  | $ | — |  |  | $ | — |
Severance costs | 13 |  |  | 67 |  |  | 1 |  |  | (26 | ) |  | 55 |
Site closure & restructuring costs | 15 |  |  | 9 |  |  | 3 |  |  | (16 | ) |  | 11 |
Total | $ | 28 |  |  | $ | 183 |  |  | $ | (103 | ) |  | $ | (42 | ) |  | $ | 66 |

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- Definition Tabular disclosure of costs incurred for restructuring including, but not limited to, exit and disposal activities, remediation, implementation, integration, asset impairment, and charges against earnings from the write-down of assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 + Details
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- Definition Tabular disclosure of an entity's restructuring reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost. This element may also include a description of any reversal and other adjustment made during the period to the amount of an accrued liability for restructuring activities. This element may be used to encapsulate the roll forward presentations of an entity's restructuring reserve by type of cost and in total, and explanation of changes that occurred in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)(2)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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