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Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Identifiable Intangible Assets |
|  | December 31, 2022 |  | December 31, 2021
(In millions) |  | Gross Carrying Amount |  | Accumulated Amortization |  | Gross Carrying Amount |  | Accumulated Amortization
Definite-lived intangibles |  |  |  |  |  |  |  |
Customer relationships |  | $ | 799 |  |  | $ | 392 |  |  | $ | 817 |  |  | $ | 347 |
Estimated Future Amortization Expense for Amortizable Intangible Assets | Estimated future amortization expense for amortizable intangible assets for the next five years is as follows:
(In millions) |  | 2023 |  | 2024 |  | 2025 |  | 2026 |  | 2027 |  | Thereafter
Estimated amortization expense |  | $ | 54 |  |  | $ | 54 |  |  | $ | 54 |  |  | $ | 53 |  |  | $ | 53 |  |  | $ | 139 |

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