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Accumulated Other Comprehensive Income, Net of Tax Level 4 (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | $ (329,000,000) |  |  |  | $ 928,000,000 |  |  |  | $ (329,000,000) | $ 928,000,000 |  | $ (79,000,000) |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at the end of period, Accumulated Other Comprehensive Income (Loss) | (329,000,000) |  |  |  | 928,000,000 |  |  |  | (329,000,000) | 928,000,000 |  | (79,000,000) |
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax |  |  |  |  |  |  |  |  | (1,279,000,000) | 1,142,000,000 |  | (1,823,000,000) |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax |  |  |  |  |  |  |  |  | (22,000,000) | 135,000,000 |  | 1,099,000,000 |
Other Comprehensive Income (Loss), Net of Tax |  |  |  |  |  |  |  |  | (1,257,000,000) | 1,007,000,000 |  | (2,922,000,000) |
Balance at the beginning of period, Accumulated Other Comprehensive Income (Loss) |  |  |  | $ 928,000,000 |  |  |  | $ (79,000,000) | 928,000,000 | (79,000,000) |  | 2,843,000,000 |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net realized capital gains (losses), excluding net OTTI losses recognized in earnings |  |  |  |  |  |  |  |  | (54,000,000) | 75,000,000 |  | 296,000,000 |
Income Tax Expense (Benefit) |  |  |  |  |  |  |  |  | 305,000,000 | 350,000,000 |  | 246,000,000 |
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest | 0 | $ 9,000,000 | $ 0 | 0 | 37,000,000 | $ 0 | $ (617,000,000) | 29,000,000 | 9,000,000 | (551,000,000) |  | (1,049,000,000) |
Accumulated Net Unrealized Investment Gain (Loss) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | 1,279,000,000 |  |  |  | 2,370,000,000 |  |  |  | 1,279,000,000 | 2,370,000,000 |  | 987,000,000 |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at the end of period, Accumulated Other Comprehensive Income (Loss) |  |  |  |  | 2,370,000,000 |  |  |  |  | 2,370,000,000 |  | 987,000,000 |
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax |  |  |  |  |  |  |  |  | (1,112,000,000) | 1,474,000,000 |  | (1,416,000,000) |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax |  |  |  |  |  |  |  |  | (21,000,000) | 91,000,000 |  | 1,015,000,000 |
Other Comprehensive Income (Loss), Net of Tax |  |  |  |  |  |  |  |  | (1,091,000,000) | 1,383,000,000 |  | (2,431,000,000) |
Balance at the beginning of period, Accumulated Other Comprehensive Income (Loss) |  |  |  | 2,370,000,000 |  |  |  | 987,000,000 | 2,370,000,000 | 987,000,000 |  | 3,418,000,000 |
Accumulated Net Unrealized Investment Gain (Loss) [Member] | Retirement Plans and Individual Life Businesses [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net realized capital gains (losses), excluding net OTTI losses recognized in earnings |  |  |  |  |  |  |  |  | 1,500,000,000 |  |  | 1,500,000,000 |
Accumulated Other-than-Temporary Impairment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | (7,000,000) |  |  |  | (5,000,000) |  |  |  | (7,000,000) | (5,000,000) |  | (12,000,000) |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at the end of period, Accumulated Other Comprehensive Income (Loss) |  |  |  |  | (5,000,000) |  |  |  |  | (5,000,000) |  | (12,000,000) |
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax |  |  |  |  |  |  |  |  | (3,000,000) | 3,000,000 |  | 51,000,000 |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax |  |  |  |  |  |  |  |  | (1,000,000) | (4,000,000) |  | 16,000,000 |
Other Comprehensive Income (Loss), Net of Tax |  |  |  |  |  |  |  |  | (2,000,000) | 7,000,000 |  | 35,000,000 |
Balance at the beginning of period, Accumulated Other Comprehensive Income (Loss) |  |  |  | (5,000,000) |  |  |  | (12,000,000) | (5,000,000) | (12,000,000) |  | (47,000,000) |
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | 130,000,000 |  |  |  | 150,000,000 |  |  |  | 130,000,000 | 150,000,000 |  | 108,000,000 |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at the end of period, Accumulated Other Comprehensive Income (Loss) |  |  |  |  | 150,000,000 |  |  |  |  | 150,000,000 |  | 108,000,000 |
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax |  |  |  |  |  |  |  |  | 18,000,000 | 89,000,000 |  | (195,000,000) |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax |  |  |  |  |  |  |  |  | 38,000,000 | 47,000,000 |  | 125,000,000 |
Other Comprehensive Income (Loss), Net of Tax |  |  |  |  |  |  |  |  | (20,000,000) | 42,000,000 |  | (320,000,000) |
Balance at the beginning of period, Accumulated Other Comprehensive Income (Loss) |  |  |  | 150,000,000 |  |  |  | 108,000,000 | 150,000,000 | 108,000,000 |  | 428,000,000 |
Accumulated Translation Adjustment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | (55,000,000) |  |  |  | (8,000,000) |  |  |  | (55,000,000) | (8,000,000) |  | 91,000,000 |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at the end of period, Accumulated Other Comprehensive Income (Loss) |  |  |  |  | (8,000,000) |  |  |  |  | (8,000,000) |  | 91,000,000 |
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax |  |  |  |  |  |  |  |  | (47,000,000) | 13,000,000 |  | (337,000,000) |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax |  |  |  |  |  |  |  |  | 0 | 112,000,000 |  | (22,000,000) |
Other Comprehensive Income (Loss), Net of Tax |  |  |  |  |  |  |  |  | (47,000,000) | (99,000,000) |  | (315,000,000) |
Balance at the beginning of period, Accumulated Other Comprehensive Income (Loss) |  |  |  | (8,000,000) |  |  |  | 91,000,000 | (8,000,000) | 91,000,000 |  | 406,000,000 |
Accumulated Other Comprehensive Income (Loss) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at the end of period, Accumulated Other Comprehensive Income (Loss) | (329,000,000) |  |  |  | 928,000,000 |  |  |  | (329,000,000) | 928,000,000 |  | (79,000,000) |
Other Comprehensive Income (Loss), Net of Tax |  |  |  |  |  |  |  |  | (1,257,000,000) | 1,007,000,000 |  | (2,922,000,000) |
Balance at the beginning of period, Accumulated Other Comprehensive Income (Loss) |  |  |  | 928,000,000 |  |  |  | (79,000,000) | 928,000,000 | (79,000,000) |  | 2,843,000,000 |
Accumulated Defined Benefit Plans Adjustment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | $ (1,676,000,000) |  |  |  | (1,579,000,000) |  |  |  | (1,676,000,000) | (1,579,000,000) |  | (1,253,000,000) |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at the end of period, Accumulated Other Comprehensive Income (Loss) |  |  |  |  | $ (1,579,000,000) |  |  |  |  | (1,579,000,000) |  | (1,253,000,000) |
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax |  |  |  |  |  |  |  |  | (135,000,000) | (437,000,000) |  | 74,000,000 |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax |  |  |  |  |  |  |  |  | (38,000,000) | (111,000,000) |  | (35,000,000) |
Other Comprehensive Income (Loss), Net of Tax |  |  |  |  |  |  |  |  | (97,000,000) | (326,000,000) |  | 109,000,000 |
Balance at the beginning of period, Accumulated Other Comprehensive Income (Loss) |  |  |  | $ (1,579,000,000) |  |  |  | $ (1,253,000,000) | (1,579,000,000) | (1,253,000,000) |  | (1,362,000,000) |
Cash Flow Hedging [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net |  |  |  |  |  |  |  |  | 59,000,000 | 73,000,000 |  | 192,000,000 |
Cash Flow Hedging [Member] | Retirement Plans and Individual Life Businesses [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net |  |  |  |  |  |  |  |  |  |  |  | 71 |
Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax |  |  |  |  |  |  |  |  | 22,000,000 |  |  |  |
Reclassification out of Accumulated Other Comprehensive Income [Member] | Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax |  |  |  |  |  |  |  |  |  | (135,000,000) |  | (1,099,000,000) |
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax |  |  |  |  |  |  |  |  | 21,000,000 | (91,000,000) |  | 1,015,000,000 |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net realized capital gains (losses), excluding net OTTI losses recognized in earnings |  |  |  |  |  |  |  |  | (32,000,000) | 217,000,000 |  | 1,515,000,000 | [1]
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest |  |  |  |  |  |  |  |  | (32,000,000) | 217,000,000 |  | 1,515,000,000 |
Income Tax Expense (Benefit) |  |  |  |  |  |  |  |  | (11,000,000) | 76,000,000 |  | 531,000,000 |
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | 0 | 50,000,000 |  | 31,000,000 |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax |  |  |  |  |  |  |  |  | 0 | 172,000,000 | [2] | (34,000,000) | [2]
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Other-than-Temporary Impairment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax |  |  |  |  |  |  |  |  | 1,000,000 | 4,000,000 |  | 16,000,000 |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Net realized capital gains (losses), excluding net OTTI losses recognized in earnings |  |  |  |  |  |  |  |  | (2,000,000) | (6,000,000) |  | 25,000,000 |
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest |  |  |  |  |  |  |  |  | (2,000,000) | (6,000,000) |  | 25,000,000 |
Income Tax Expense (Benefit) |  |  |  |  |  |  |  |  | (1,000,000) | (2,000,000) |  | 9,000,000 |
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Translation Adjustment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax |  |  |  |  |  |  |  |  | 0 | 112,000,000 |  | (22,000,000) |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest |  |  |  |  |  |  |  |  | 0 | 172,000,000 |  | (34,000,000) |
Income Tax Expense (Benefit) |  |  |  |  |  |  |  |  | 0 | 60,000,000 |  | (12,000,000) |
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment [Member] | Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax |  |  |  |  |  |  |  |  | 38,000,000 | 111,000,000 |  | 35,000,000 |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest |  |  |  |  |  |  |  |  | (58,000,000) | (171,000,000) |  | (54,000,000) |
Income Tax Expense (Benefit) |  |  |  |  |  |  |  |  | (20,000,000) | (60,000,000) |  | (19,000,000) |
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) |  |  |  |  |  |  |  |  | 7,000,000 | 7,000,000 |  | 7,000,000 |
Defined Benefit Plan, Actuarial Gain (Loss) |  |  |  |  |  |  |  |  | (65,000,000) | (50,000,000) |  | (61,000,000) |
Defined Benefit Plan, Settlements, Plan Assets |  |  |  |  |  |  |  |  | 0 | (128,000,000) |  | 0 |
Reclassification out of Accumulated Other Comprehensive Income [Member] | Cash Flow Hedging [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax |  |  |  |  |  |  |  |  | (38,000,000) | (47,000,000) |  | (125,000,000) |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest |  |  |  |  |  |  |  |  | 59,000,000 | 73,000,000 |  | 192,000,000 |
Income Tax Expense (Benefit) |  |  |  |  |  |  |  |  | 21,000,000 | 26,000,000 |  | 67,000,000 |
Reclassification out of Accumulated Other Comprehensive Income [Member] | Interest Rate Swap [Member] | Gain (Loss) on Investments [Member] | Cash Flow Hedging [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net |  |  |  |  |  |  |  |  | 4,000,000 |  |  | 91,000,000 | [3]
Reclassification out of Accumulated Other Comprehensive Income [Member] | Interest Rate Swap [Member] | Investment Income [Member] | Cash Flow Hedging [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net |  |  |  |  |  |  |  |  | 64,000,000 |  |  | 97,000,000 |
Reclassification out of Accumulated Other Comprehensive Income [Member] | Currency Swap [Member] | Gain (Loss) on Investments [Member] | Cash Flow Hedging [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net |  |  |  |  |  |  |  |  | (9,000,000) |  |  | $ 4,000,000 |
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Gain (Loss) on Investments [Member] | Cash Flow Hedging [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net |  |  |  |  |  |  |  |  | 4,000,000 | (1,000,000) |  |  |
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Investment Income [Member] | Cash Flow Hedging [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net |  |  |  |  |  |  |  |  | 64,000,000 |  |  |  |
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Interest Income [Member] | Cash Flow Hedging [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net |  |  |  |  |  |  |  |  |  | 87,000,000 |  |  |
Designated as Hedging Instrument [Member] | Currency Swap [Member] | Gain (Loss) on Investments [Member] | Cash Flow Hedging [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net |  |  |  |  |  |  |  |  | $ (9,000,000) | $ (13,000,000) |  |  |
[1] | The December 31, 2013 amount includes $1.5 billion of net unrealized gains on securities relating to the sales of the Retirement Plans and Individual Life businesses.
[2] | The December 31, 2014 amount relates to the sale of the HLIKK variable and fixed annuity business and the December 31, 2013 amount relates to the sale of the UK variable annuity business.
[3] | The December 31, 2013 amount includes $71 of net gains on cash flow hedging instruments relating to the sales of the Retirement Plans and Individual Life businesses.

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