| **Related Party Transactions Narrative (Details) - USD ($) $ in Millions** | 12 Months Ended |
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| Due to Related Parties                                                     | $ 82            | $ 153 |   |
| Fees and expenses of investment facilities and services [Member]           |            |   |   |
| Amounts reimbursed to Loews for services provided to the Company           | 39              | 39 | $ 37 |
| Due to Related Parties                                                     | 21              | 21 |   |
| Corporate Services and Related Travel Expenses [Member]                    |            |   |   |
| Amounts reimbursed to Loews for services provided to the Company           |            |   | 4 |
| Taxes paid [Member]                                                        |            |   |   |
| Due to Related Parties                                                     | 61              | 132 |   |
| Loews [Member]                                                             |            |   |   |
| Amounts earned from Loews for insurance premiums                           | $ 2             | $ 2 | $ 2 |

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| - Definition
Carrying amount as of the balance sheet date of obligations due all related parties.
+ References
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| - Definition
Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864
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| - Definition
Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.
+ References
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