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GOODWILL AND OTHER INTANGIBLE ASSETS (Tables) | 12 Months Ended
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Dec. 31, 2018
GOODWILL AND OTHER INTANGIBLES [Abstract] |
Schedule of Goodwill | The balances and changes in the carrying amount of Goodwill by segment are as follows (in millions of dollars):
|  | United States |  | Canada |  | Other businesses |  | Total
Balance at January 1, 2017 |  | $ | 202 |  |  | $ | 122 |  |  | $ | 203 |  |  | $ | 527 |
Divestiture |  | (3 | ) |  | — |  |  | — |  |  | (3 | )
Impairment |  | (7 | ) |  | — |  |  | — |  |  | (7 | )
Translation |  | — |  |  | 8 |  |  | 19 |  |  | 27 |
Balance at December 31, 2017 |  | 192 |  |  | 130 |  |  | 222 |  |  | 544 |
Impairment |  | — |  |  | — |  |  | (105 | ) |  | (105 | )
Translation |  | — |  |  | (10 | ) |  | (5 | ) |  | (15 | )
Balance at December 31, 2018 |  | $ | 192 |  |  | $ | 120 |  |  | $ | 112 |  |  | $ | 424 |
Cumulative goodwill impairment charges, January 1, 2018 |  | $ | 24 |  |  | $ | 32 |  |  | $ | 71 |  |  | $ | 127 |
Impairment |  | — |  |  | — |  |  | 105 |  |  | 105 |
Cumulative goodwill impairment charges, December 31, 2018 |  | $ | 24 |  |  | $ | 32 |  |  | $ | 176 |  |  | $ | 232 |
Schedule of Finite-Lived Intangible Assets by Major Class | The balances and changes in Intangible assets - net are as follows (in millions of dollars):
|  |  | As of December 31,
|  |  | 2018 |  | 2017
| Weighted average life |  | Gross carrying amount |  | Accumulated amortization |  | Net carrying amount |  | Gross carrying amount |  | Accumulated amortization |  | Net carrying amount
Customer lists and relationships | 14.3 years |  | $ | 410 |  |  | $ | 204 |  |  | $ | 206 |  |  | $ | 430 |  |  | $ | 196 |  |  | $ | 234 |
Trademarks, trade names and other | 14.5 years |  | 24 |  |  | 15 |  |  | 9 |  |  | 26 |  |  | 16 |  |  | 10 |
Non-amortized trade names and other |  |  | 99 |  |  | — |  |  | 99 |  |  | 137 |  |  | — |  |  | 137 |
Capitalized software | 4.2 years |  | 657 |  |  | 511 |  |  | 146 |  |  | 633 |  |  | 445 |  |  | 188 |
Total intangible assets | 8.2 years |  | $ | 1,190 |  |  | $ | 730 |  |  | $ | 460 |  |  | $ | 1,226 |  |  | $ | 657 |  |  | $ | 569 |
Schedule of Estimated Amortization Expense | Estimated amortization expense for future periods is as follows (in millions of dollars):
Year |  | Expense
2019 |  | $ | 84 |
2020 |  | 66 |
2021 |  | 50 |
2022 |  | 26 |
2023 |  | 20 |
Thereafter |  | 115 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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