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Business and Basis of Presentation Supplemental Cash Flow information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023 | Dec. 31, 2022
Cash and Cash Equivalents, at Carrying Value | $ 54 | $ 54 | $ 32 |  |
Income Taxes Paid |  | 11 | 9 |  |
Restricted Cash | 16 | 16 | 13 | $ 12 |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents | 117 | 117 | 302 | 274 | $ 61
Securities acquired (transferred) in transactions related to Puerto Rico restructurings | 0 |  | (1) |  |
Securities acquired (transferred) in connection with financial guarantee commutations |  | (65) |  |  |
VIE long-term debt issued related to Puerto Rico restructurings |  | 0 | 133 |  |
Reduction in VIE Long-term DEbt Due to Deconsolidation |  | 0 | 133 |  |
Stock Issued During Period, Value, Acquisitions | 29 | 29 |  |  |
Long-term Debt [Member] |  |  |  |  |
Interest Paid, Including Capitalized Interest, Operating and Investing Activities |  | 0 | 50 |  |
Variable Interest Entity, Primary Beneficiary [Member] |  |  |  |  |
Restricted Cash | $ 47 | $ 47 | $ 256 | $ 246 |

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483467/210-10-45-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-4 + Details
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