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Income Taxes Level 4 Effective Income Tax Rate Reconciliation (Details) - USD ($) | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Jun. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Jun. 30, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount | $ 185,000,000 | $ 133,000,000 |  | $ 378,000,000 | $ 516,000,000 |  |  |
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount | (31,000,000) | (33,000,000) |  | (94,000,000) | (100,000,000) |  |  |
Effective Income Tax Rate Reconciliation, Deduction, Dividends, Amount | (14,000,000) | (36,000,000) |  | (57,000,000) | (131,000,000) |  |  |
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount | 0 | (60,000,000) |  | (78,000,000) | (57,000,000) |  |  |
Effective Income Tax Rate Reconciliation, Disposition of Business, Amount | (50,000,000) | 0 |  | (50,000,000) | 0 |  |  |
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount | 0 | 3,000,000 |  | 3,000,000 | (6,000,000) |  |  |
Income Tax Expense (Benefit) | 90,000,000 | 7,000,000 |  | 102,000,000 | 222,000,000 |  |  |
HFPI estimated tax benefit on disposition | 65,000,000 |  |  |  |  |  |  |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount |  | 60,000,000 |  |  | 60,000,000 |  |  |
Unrecognized Tax Benefits, Period Increase (Decrease) |  |  |  |  | 36,000,000 |  |  |
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions | 0 | 0 | $ (48,000,000) | 0 | (48,000,000) |  |  |
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions | 0 | 12,000,000 |  | 0 | 12,000,000 |  |  |
Unrecognized Tax Benefits | $ 12,000,000 | $ 12,000,000 | $ 0 | $ 12,000,000 | $ 12,000,000 | $ 12,000,000 | $ 12,000,000 | $ 48,000,000
Income Tax Examination, Description |  |  |  | The federal audit of the years 2012 and 2013 began in March 2015 and is expected to be completed in 2017. Management believes that adequate provision has been made in the financial statements for any potential adjustments that may result from tax examinations and other tax-related matters for all open tax years. |  |  |  |

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- Definition A brief description of status of the tax examination, significant findings to date, and the entity's position with respect to the findings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 Reference 2: 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.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 + Details
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