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v3.10.0.1

Basis of Presentation and Significant Accounting Policies (Details) - USD ($) $ / shares in Units, $ in Millions |  |  |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Aug. 22, 2018 | May 31, 2018 | Jan. 01, 2018 | Sep. 30, 2018 | Mar. 31, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |
Fee income |  |  |  | $ 344 |  | $ 291 | $ 994 | $ 855 |
TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect |  |  | $ (88) |  |  |  |  |  |
Equity securities, AFS |  |  |  | 0 |  |  | 0 |  | $ 1,012
Other revenues |  |  |  | 29 |  | 24 | 73 | 66 |
Total revenues subject to updated guidance |  |  |  | 373 |  | 315 | 1,067 | 921 |
Operating Expense [Member] |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |
Distribution Costs |  |  |  |  |  | 48 |  | 140 |
Net Unrealized Gain on Securities |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |
Cumulative effect of accounting change net of income taxes |  |  |  |  |  |  |  |  | 273
Net Unrealized Gain on Securities | Equity Securities [Member] |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |
Equity securities, AFS |  |  | 1,000 |  |  |  |  |  |
Discontinued Operations, Held-for-sale or Disposed of by Sale [Member] |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |
TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect |  |  |  |  | $ (193) |  |  |  |
Corporate |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |
Fee income |  |  |  | 15 |  | 1 | 21 | 2 |
Other revenues |  |  |  | 6 |  | 0 | 8 | 0 |
Continuing Operations [Member] |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |
TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect |  |  | (105) |  |  |  |  |  |
Installment billing fees | Operating Segments | Commercial Lines |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |
Fee income |  |  |  | 9 |  | 9 | 26 | 28 |
Installment billing fees | Operating Segments | Personal Lines |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |
Fee income |  |  |  | 10 |  | 11 | 30 | 33 |
Insurance servicing revenues | Operating Segments | Personal Lines |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |
Other revenues |  |  |  | 24 |  | 24 | 66 | 66 |
Administrative services | Operating Segments | Group Benefits |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |
Fee income |  |  |  | 43 |  | 19 | 131 | 57 |
Advisor, distribution and other management fees | Operating Segments | Mutual Funds |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |
Fee income |  |  |  | 245 |  | 229 | 722 | 660 |
Other fees | Operating Segments | Mutual Funds |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |
Fee income |  |  |  | 21 |  | $ 22 | 63 | $ 75 |
Maximum [Member] | Discontinued Operations, Held-for-sale or Disposed of by Sale [Member] | Other Income [Member] |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |
Discontinued Operation, Period of Continuing Involvement after Disposal |  | 24 months |  |  |  |  |  |  |
Equity Securities [Member] |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |
Cumulative effect of accounting change net of income taxes |  |  | 83 |  |  |  |  |  |
Equity securities, AFS |  |  |  |  |  |  |  |  | $ 1,012
Shadow DAC [Member] | Discontinued Operations, Held-for-sale or Disposed of by Sale [Member] |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |
Cumulative effect of accounting change net of income taxes |  |  | $ 10 |  |  |  |  |  |
The Navigators Group, Inc. [Member] |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |
Business Acquisition, Share Price | $ 70 |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred | $ 2,100 |  |  |  |  |  |  |  |

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