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Goodwill and Intangible Assets, net | 12 Months Ended
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Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Intangible Assets, net | Goodwill and Intangible Assets, net The following table presents goodwill by reportable segment as of December 31, 2022 and 2021 (in millions):
IMT | $ | 2,175 |
Mortgages | 199 |
Total | $ | 2,374 |
The goodwill recorded in connection with the acquisition of ShowingTime, which includes intangible assets that do not qualify for separate recognition, is not deductible for tax purposes and is included within the IMT segment. The following tables present the detail of intangible assets as of the dates presented (in millions):
| December 31, 2022
| Cost |  | Accumulated Amortization |  | Net
Customer relationships | $ | 59 |  |  | $ | (10) |  |  | $ | 49 |
Software | 54 |  |  | (15) |  |  | 39 |
Developed technology | 49 |  |  | (15) |  |  | 34 |
Trade names and trademarks | 45 |  |  | (15) |  |  | 30 |
Purchased content | 8 |  |  | (6) |  |  | 2 |
Total | $ | 215 |  |  | $ | (61) |  |  | $ | 154 |
| December 31, 2021
| Cost |  | Accumulated Amortization |  | Net
Customer relationships | $ | 139 |  |  | $ | (84) |  |  | $ | 55 |
Developed technology | 133 |  |  | (86) |  |  | 47 |
Trade names and trademarks | 45 |  |  | (9) |  |  | 36 |
Software | 53 |  |  | (18) |  |  | 35 |
Intangibles-in-progress | 2 |  |  | — |  |  | 2 |
Purchased content | 4 |  |  | (3) |  |  | 1 |
Total | $ | 376 |  |  | $ | (200) |  |  | $ | 176 |
Amortization expense recorded for intangible assets for the years ended December 31, 2022, 2021 and 2020 was $58 million, $56 million and $49 million, respectively. Amortization expense for trade names and trademarks and customer relationships intangible assets is included in sales and marketing expenses. Amortization expense for all other intangible assets is included in cost of revenue. Estimated future amortization expense for intangible assets, including amortization related to future commitments (see Note 18), as of December 31, 2022 is as follows (in millions):
2023 | $ | 45 |
2024 | 41 |
2025 | 30 |
2026 | 16 |
2027 | 14 |
Thereafter | 24 |
Total future amortization expense | $ | 170 |
We did not record any impairment costs related to our intangible assets for the years ended December 31, 2022 and 2021. During the year ended December 31, 2020, we recognized a non-cash impairment charge of $72 million related to our Trulia trade names and trademarks intangible asset. The impairment charge is included in impairment costs in our consolidated statement of operations within our IMT and Mortgages segments for the year ended December 31, 2020 for $69 million and $3 million, respectively. In March 2020, we identified factors, including shortfalls in projected revenue related to the Trulia brand, directly related to the COVID-19 pandemic that led us to conclude it was more likely than not that the carrying value of the asset exceeded its fair value. Accordingly, with the assistance of a third-party specialist, we performed a quantitative analysis to determine the fair value of the intangible asset. The valuation was prepared using an income approach based on the relief-from-royalty method and relied on inputs with unobservable market prices including projected revenue, royalty rate, discount rate, and estimated tax rate, and therefore is considered a Level 3 measurement under the fair value hierarchy.

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI https://asc.fasb.org/topic&trid=2144416 + Details
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