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Comprehensive Loss (Tables) | 12 Months Ended
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Dec. 31, 2023
Equity [Abstract] |
Schedule of Changes in Accumulated Other Comprehensive Income (Loss) ("AOCL") by Component | The following tables present information about items reclassified out of accumulated other comprehensive loss (“AOCL”) by component for the years ended December 31, 2023 and 2022 (in millions, net of tax):
|  |  | Change in |  |  |  |  |  |  |
|  |  | Fair Value of |  |  | Change in |  |  |  |
|  |  | Available-for-Sale |  |  | Unrecognized |  |  |  |
|  |  | Debt |  |  | Pension Cost |  |  |  |
|  |  | Securities |  |  | Components |  |  | AOCL |
Balance as of December 31, 2022 |  |  | $ | (19 | ) |  | $ | (2 | ) |  | $ | (21 | )
Other comprehensive income |  |  |  |  |  |  |  |  |  |
before reclassifications |  |  |  | 6 |  |  |  | 1 |  |  |  | 7 |
Amounts reclassified from |  |  |  |  |  |  |  |  |  |
AOCL |  |  |  | — |  |  |  | — |  |  |  | — |
Net current-period other |  |  |  |  |  |  |  |  |  |
comprehensive income |  |  |  | 6 |  |  |  | 1 |  |  |  | 7 |
Balance as of December 31, 2023 |  |  | $ | (13 | ) |  | $ | (1 | ) |  | $ | (14 | )
|  | Change in |  |  |  |  |  |  |
|  | Fair Value of |  |  | Change in |  |  |  |
|  | Available-for-Sale |  |  | Unrecognized |  |  |  |
|  | Debt |  |  | Pension Cost |  |  |  |
|  | Securities |  |  | Components |  |  | AOCL |
Balance as of December 31, 2021 |  | $ | (2 | ) |  | $ | (12 | ) |  | $ | (14 | )
Other comprehensive (loss) |  |  |  |  |  |  |  |  |
income before reclassifications |  |  | (16 | ) |  |  | 10 |  |  |  | (6 | )
Amounts reclassified from |  |  |  |  |  |  |  |  |
AOCL |  |  | (1 | ) |  |  | — |  |  |  | (1 | )
Net current-period other |  |  |  |  |  |  |  |  |
comprehensive (loss) income |  |  | (17 | ) |  |  | 10 |  |  |  | (7 | )
Balance as of December 31, 2022 |  | $ | (19 | ) |  | $ | (2 | ) |  | $ | (21 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-14A Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481674/830-30-50-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481694/830-30-45-20 + Details
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