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Goodwill Level 3 (Tables) | 12 Months Ended
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Dec. 31, 2016
Goodwill, Impaired [Abstract] |
Carrying amount of goodwill allocated to reporting segment |
| Small Commercial | Mutual Funds | Personal Lines | Corporate [2] | Total
Balance, beginning of period [1] | $ | — |  | $ | 149 |  | $ | 119 |  | $ | 230 |  | $ | 498 |
Acquisitions [3] | 38 |  | 31 |  | — |  | — |  | 69 |
Balance, end of period [1] | $ | 38 |  | $ | 180 |  | $ | 119 |  | $ | 230 |  | $ | 567 |

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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