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GOODWILL, SOFTWARE AND OTHER INTANGIBLE ASSETS, NET (Tables) | 12 Months Ended
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Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract] |
Changes in Goodwill | Changes in goodwill for the years ended December 31, 2022 and 2021 are as follows:
(in millions) | Amount
Balance at December 31, 2020 | $ | 294 |
Additions | — |
Balance at December 31, 2021 | $ | 294 |
Additions | 168 |
Balance at December 31, 2022 | $ | 462 |
Summary of Software and Other Intangible Assets | The following summarizes software and other intangible assets:
|  | December 31, 2022 | December 31, 2021
(in millions) | Weighted Average Amortization Period | Gross Carrying Amount | Accumulated Amortization | Net Carrying Amount | Gross Carrying Amount | Accumulated Amortization | Net Carrying Amount
Amortizable intangibles: |  |  |  |  |  |  |
Software | 3 years | 278 |  | (213) |  | 65 |  | 236 |  | (181) |  | 55 |
Customer relationships | 9 years | 135 |  | (93) |  | 42 |  | 98 |  | (92) |  | 6 |
Developed technology | 7 years | 65 |  | (9) |  | 56 |  | — |  | — |  | — |
Total |  | $ | 478 |  | $ | (315) |  | $ | 163 |  | $ | 334 |  | $ | (273) |  | $ | 61 |
Schedule of Capitalized Internally Developed Software Costs and Depreciation Expense | The following table summarizes our capitalized internally developed software costs and related depreciation expense.
| Year Ended December 31,
(in millions) | 2022 | 2021 | 2020
Capitalized internally developed software costs | 48 |  | 33 |  | 36 |
Depreciation expense for capitalized internally developed software costs | 35 |  | 33 |  | 31 |
Expected Expense Related to Intangibles Amortization in Future Periods | Expense related to intangibles amortization in future periods as of December 31, 2022 is expected to be as follows:
Year ending December 31: | Amount (in millions)
2023 | $ | 53 |
2024 | 40 |
2025 | 28 |
2026 | 18 |
2027 | 17 |
2028 and thereafter | 7 |
Total | $ | 163 |

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