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GOODWILL AND OTHER INTANGIBLE ASSETS | 12 Months Ended
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Dec. 31, 2023
GOODWILL AND OTHER INTANGIBLES [Abstract] |
GOODWILL AND OTHER INTANGIBLE ASSETS | GOODWILL AND OTHER INTANGIBLE ASSETS Grainger completed its annual impairment testing of goodwill and intangible assets during the fourth quarter of 2023 and 2022. Based on the results of that testing, the Company did not identify any significant events or changes in circumstances that indicated the existence of impairment indicators and concluded that it was more likely than not that the fair value of the reporting units exceeded their carrying amounts at each respective period. High-Touch Solutions N.A. – Canada Business As of December 31, 2023 and 2022, the Canada business reporting unit had goodwill of $124 million and $121 million, respectively. As part of our annual impairment testing, the Company compared the current results to forecasted expectations of the most recent quantitative analysis, along with analyzing macroeconomic conditions, current industry trends and transactions, and other market data of industry peers. The Company also performed various sensitivities over key assumptions, including projections of future operating expenditures used in the analysis. The Company did not identify any significant events or changes in circumstances that indicated the existence of impairment indicators for its Canada business, and concluded it was more likely than not its fair value exceeded its carrying value. The Company's balances and changes in the carrying amount of Goodwill by segment are as follows (in millions of dollars):
|  | High-Touch Solutions N.A. |  | Endless Assortment |  |  |  | Total
Balance at January 1, 2022 |  | $ | 321 |  |  | $ | 63 |  |  |  |  | $ | 384 |
Translation |  | (8) |  |  | (5) |  |  |  |  | (13) |
Balance at December 31, 2022 |  | 313 |  |  | 58 |  |  |  |  | 371 |
Translation |  | 2 |  |  | (3) |  |  |  |  | (1) |
Balance at December 31, 2023 |  | $ | 315 |  |  | $ | 55 |  |  |  |  | $ | 370 |
Grainger's cumulative goodwill impairment as of December 31, 2023, was $137 million. No goodwill impairment was recorded for the twelve months ended December 31, 2023, 2022 and 2021. The balances and changes in intangible assets – net are as follows (in millions of dollars):
|  |  | As of December 31,
|  |  | 2023 |  | 2022
| Weighted average life |  | Gross carrying amount |  | Accumulated amortization |  | Net carrying amount |  | Gross carrying amount |  | Accumulated amortization |  | Net carrying amount
Customer lists and relationships | 10.7 years |  | $ | 166 |  |  | $ | 153 |  |  | $ | 13 |  |  | $ | 217 |  |  | $ | 181 |  |  | $ | 36 |
Trademarks, trade names and other | 14.9 years |  | 31 |  |  | 23 |  |  | 8 |  |  | 32 |  |  | 22 |  |  | 10 |
Non-amortized trade names and other | Indefinite |  | 20 |  |  | — |  |  | 20 |  |  | 22 |  |  | — |  |  | 22 |
Capitalized software | 4.2 years |  | 659 |  |  | 466 |  |  | 193 |  |  | 580 |  |  | 416 |  |  | 164 |
Total intangible assets | 6.1 years |  | $ | 876 |  |  | $ | 642 |  |  | $ | 234 |  |  | $ | 851 |  |  | $ | 619 |  |  | $ | 232 |
Amortization expense of intangible assets recorded in SG&A was $64 million, $61 million and $63 million for the years ended December 31, 2023, 2022 and 2021, respectively. Estimated amortization expense for future periods is as follows (in millions of dollars):
Year |  | Expense
2024 |  | $ | 66 |
2025 |  | 58 |
2026 |  | 46 |
2027 |  | 28 |
2028 |  | 13 |
Thereafter |  | 3 |
Total |  | $ | 214 |

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 350 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//350/tableOfContent + Details
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