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Equity Level 4 Statutory Net Income (Loss) and Statutory Surplus (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Statutory Accounting Practices [Line Items] |  |  |  |
Payments of Ordinary Dividends, Common Stock |  | $ 316 | $ 282 | $ 202
Statutory Net Income (Loss) |  |  |  |
Statutory Net Income (Loss) |  | 2,025 | 1,643 | 3,361
Statutory surplus |  |  |  |
Statutory Capital and surplus |  | $ 15,154 | 15,226 |
Statutory Accounting Practices, Risk Based Capital Requirements Compliance Assertion |  | All of the Company's operating insurance subsidiaries had RBC ratios in excess of the minimum levels required by the applicable insurance regulations. On an aggregate basis, the Company's U.S. property and casualty insurance companies' RBC ratio was in excess of 200% of its Company Action Level as of December 31, 2015 and 2014. The RBC ratios for the Company's principal life insurance operating subsidiaries were all in excess of 400% of their Company Action Levels as of December 31, 2015 and 2014 |  |
Restrictions on Parent Company's Ability to Pay Dividends |  | no |  |
Amount of Restricted Net Assets for Consolidated and Unconsolidated Subsidiaries |  | $ 19,000 |  |
U.S. life insurance subsidiaries, includes domestic captive insurance subsidiaries |  |  |  |
Statutory Net Income (Loss) |  |  |  |
Statutory Net Income (Loss) |  | 539 | 415 | 2,144
Statutory surplus |  |  |  |
Statutory Capital and surplus |  | 6,591 | 7,157 |
Property and casualty insurance subsidiaries |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |
Statutory Accounting Practices, Dividends Paid with Approval of Regulatory Agency |  | 900 |  |
Statutory Net Income (Loss) |  |  |  |
Statutory Net Income (Loss) |  | 1,486 | 1,228 | $ 1,217
Statutory surplus |  |  |  |
Statutory Capital and surplus |  | 8,563 | $ 8,069 |
Property and casualty insurance subsidiaries |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |
Statutory Accounting Practices, Dividends Paid with Approval of Regulatory Agency |  | $ 200 |  |
International Life Insurance Subsidiaries [Member] |  |  |  |
Statutory surplus |  |  |  |
Statutory Accounting Practices, Risk Based Capital Requirements Compliance Assertion |  | All of the Company's international insurance subsidiaries have solvency margins in excess of the minimum levels required by the applicable regulatory authorities. |  |
Scenario, Forecast [Member] | Property and casualty insurance subsidiaries |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |
Statutory Accounting Practices, Dividends Paid with Approval of Regulatory Agency | $ 800 |  |  |
Statutory surplus |  |  |  |
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval | 1,600 |  |  |
Scenario, Forecast [Member] | Hartford Life and Accident Insurance Company [Member] |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |
Payments of Ordinary Dividends, Common Stock | $ 240 |  |  |

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- Definition Amount of restricted net assets of consolidated and unconsolidated subsidiaries as of the end of the most recently completed fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(e)(3)(ii)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition Indicates whether the entity has met its capital adequacy needs as defined by the National Association of Insurance Commissioners as risk based capital requirements, and, if not met, a disclosure of the regulatory based capital level at which the entity is operating, and describes any uncertainties of the ultimate outcome of the entity's RBC position and management's plan with respect thereto, and currently imposed regulatory restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6486098&loc=d3e24790-158529 + Details
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