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Investment Holding Level 4 Available-for-Sale Securities (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2016 USD ($) securities | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | securities | 4,187 |  |
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost | $ 16,839 | $ 22,167 |
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost | 2,565 | 3,072 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost | 14,274 | 19,095 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 2,704 | 2,892 |
Accumulated Other Comprehensive Income (Loss), Other than Temporary Impairment, Not Credit Loss, Net of Tax, Available-for-sale, Debt Securities | 6 | 11 |
Available-for-sale Debt Securities, Amortized Cost Basis | 53,805 | 56,965 |
Gain (Loss) on Investments, Excluding Other than Temporary Impairments | (212) | (54) | $ 75
Available-for-sale Securities, Gross Realized Gains | 441 | 460 | 527
Available-for-sale Securities, Gross Realized Losses | 253 | 405 | 250
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Rolling Maturity [Abstract] |  |  |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 506 | 658 |
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis | 9,015 | 10,929 |
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value | 9,289 | 11,200 |
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis | 1,896 | 2,373 |
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value | 1,912 | 2,405 |
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis | 9,038 | 9,322 |
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value | 9,245 | 9,497 |
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis | 19,962 | 20,178 |
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value | 21,556 | 21,794 |
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis | 13,894 | 14,163 |
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value | 14,001 | 14,300 |
Available-for-sale Securities, Debt Securities | 56,003 | 59,196 |
Available-for-sale Equity Securities, Amortized Cost Basis | 1,020 | 1,135 |
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax | 96 | 38 |
Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax | 19 | 41 |
Available-for-sale Securities, Equity Securities | 1,097 | 1,121 |
Available-for-sale Securities, Amortized Cost Basis | 54,825 | 57,807 |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 525 | 699 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax [Abstract] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 13,868 | 18,569 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 406 | 526 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 2,446 | 2,896 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 119 | 173 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 16,314 | 21,465 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ 525 | 699 |
Percentage of Gross Unrealized Losses Depressed Less than Twenty Percent of Cost or Amortized Cost | 95.00% |  |
Fixed maturities available-for-sale, excluding mortgage-backed and asset-backed securities [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | $ 39,911 | 42,802 |
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Rolling Maturity [Abstract] |  |  |
Available-for-sale Securities, Debt Securities | 42,002 | 44,896 |
Asset-backed Securities [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost | 950 | 1,976 |
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost | 368 | 357 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost | 582 | 1,619 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 17 | 24 |
Accumulated Other Comprehensive Income (Loss), Other than Temporary Impairment, Not Credit Loss, Net of Tax, Available-for-sale, Debt Securities | 0 | 0 |
Available-for-sale Debt Securities, Amortized Cost Basis | 2,396 | 2,520 |
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Rolling Maturity [Abstract] |  |  |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 31 | 45 |
Available-for-sale Securities, Debt Securities | 2,382 | 2,499 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax [Abstract] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 579 | 1,609 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 3 | 10 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 340 | 322 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 28 | 35 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 919 | 1,931 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | 31 | 45 |
Debt Securities [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost | 16,471 | 21,625 |
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost | 2,527 | 3,010 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost | 13,944 | 18,615 |
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds | 17,393 | 20,615 | 22,923
Available-for-sale Securities, Gross Realized Gains | 409 | 372 | 456
Available-for-sale Securities, Gross Realized Losses | 223 | 317 | 182
Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax [Abstract] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 13,553 | 18,120 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 391 | 495 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 2,412 | 2,844 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 115 | 163 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 15,965 | 20,964 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | 506 | 658 |
Equity Securities [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost | 368 | 542 |
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost | 38 | 62 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost | 330 | 480 |
Accumulated Other Comprehensive Income (Loss), Other than Temporary Impairment, Not Credit Loss, Net of Tax, Available-for-sale, Debt Securities | 0 | 0 |
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds | 680 | 1,319 | 354
Available-for-sale Securities, Gross Realized Gains | 30 | 61 | 22
Available-for-sale Securities, Gross Realized Losses | 28 | 46 | $ 20
Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax [Abstract] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 315 | 449 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 15 | 31 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 34 | 52 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 4 | 10 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 349 | 501 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | 19 | 41 |
Collateralized Debt Obligations [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost | 1,011 | 2,407 |
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost | 370 | 1,243 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost | 641 | 1,164 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 67 | 75 |
Accumulated Other Comprehensive Income (Loss), Other than Temporary Impairment, Not Credit Loss, Net of Tax, Available-for-sale, Debt Securities | 0 | 0 |
Available-for-sale Debt Securities, Amortized Cost Basis | 1,853 | 2,989 |
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Rolling Maturity [Abstract] |  |  |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 4 | 23 |
Available-for-sale Securities, Debt Securities | 1,916 | 3,038 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax [Abstract] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 640 | 1,154 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 1 | 10 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 367 | 1,227 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 3 | 13 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 1,007 | 2,381 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | 4 | 23 |
Commercial Mortgage Backed Securities [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost | 2,369 | 1,915 |
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost | 293 | 189 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost | 2,076 | 1,726 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 97 | 105 |
Accumulated Other Comprehensive Income (Loss), Other than Temporary Impairment, Not Credit Loss, Net of Tax, Available-for-sale, Debt Securities | 6 | 8 |
Available-for-sale Debt Securities, Amortized Cost Basis | 4,907 | 4,668 |
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Rolling Maturity [Abstract] |  |  |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 68 | 56 |
Available-for-sale Securities, Debt Securities | 4,936 | 4,717 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax [Abstract] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 2,027 | 1,681 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 49 | 45 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 274 | 178 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 19 | 11 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 2,301 | 1,859 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | 68 | 56 |
Corporate Debt Securities [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost | 6,253 | 9,862 |
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost | 835 | 656 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost | 5,418 | 9,206 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 1,510 | 1,342 |
Accumulated Other Comprehensive Income (Loss), Other than Temporary Impairment, Not Credit Loss, Net of Tax, Available-for-sale, Debt Securities | 0 | 3 |
Available-for-sale Debt Securities, Amortized Cost Basis | 24,380 | 25,876 |
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Rolling Maturity [Abstract] |  |  |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 224 | 416 |
Available-for-sale Securities, Debt Securities | 25,666 | 26,802 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax [Abstract] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 5,248 | 8,866 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 170 | 340 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 781 | 580 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 54 | 76 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 6,029 | 9,446 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | 224 | 416 |
Foreign Government Debt Securities [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost | 600 | 803 |
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost | 27 | 124 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost | 573 | 679 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 33 | 34 |
Accumulated Other Comprehensive Income (Loss), Other than Temporary Impairment, Not Credit Loss, Net of Tax, Available-for-sale, Debt Securities | 0 | 0 |
Available-for-sale Debt Securities, Amortized Cost Basis |  | 1,321 |
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Rolling Maturity [Abstract] |  |  |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 26 | 47 |
Available-for-sale Securities, Debt Securities | 1,171 | 1,308 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax [Abstract] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 550 | 646 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 23 | 33 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 24 | 110 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 3 | 14 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 574 | 756 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | 26 | 47 |
Municipal Bonds [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost | 1,610 | 458 |
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost | 43 | 18 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost | 1,567 | 440 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax [Abstract] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 1,498 | 430 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 69 | 10 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 41 | 17 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 2 | 1 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 1,539 | 447 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | 71 | 11 |
US States and Political Subdivisions Debt Securities [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 732 | 1,008 |
Accumulated Other Comprehensive Income (Loss), Other than Temporary Impairment, Not Credit Loss, Net of Tax, Available-for-sale, Debt Securities | 0 | 0 |
Available-for-sale Debt Securities, Amortized Cost Basis |  | 11,124 |
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Rolling Maturity [Abstract] |  |  |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 71 | 11 |
Available-for-sale Securities, Debt Securities | 11,486 | 12,121 |
Residential Mortgage Backed Securities [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost | 2,246 | 1,764 |
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost | 591 | 415 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost | 1,655 | 1,349 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 66 | 82 |
Accumulated Other Comprehensive Income (Loss), Other than Temporary Impairment, Not Credit Loss, Net of Tax, Available-for-sale, Debt Securities | 0 | 0 |
Available-for-sale Debt Securities, Amortized Cost Basis | 4,738 | 3,986 |
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Rolling Maturity [Abstract] |  |  |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 37 | 22 |
Available-for-sale Securities, Debt Securities | 4,767 | 4,046 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax [Abstract] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 1,624 | 1,340 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 31 | 9 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 585 | 402 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 6 | 13 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 2,209 | 1,742 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | 37 | 22 |
US Treasury Securities [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost | 1,432 | 2,440 |
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost | 0 | 8 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost | 1,432 | 2,432 |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 182 | 222 |
Accumulated Other Comprehensive Income (Loss), Other than Temporary Impairment, Not Credit Loss, Net of Tax, Available-for-sale, Debt Securities | 0 | 0 |
Available-for-sale Debt Securities, Amortized Cost Basis | 3,542 | 4,481 |
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Rolling Maturity [Abstract] |  |  |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 45 | 38 |
Available-for-sale Securities, Debt Securities | 3,679 | 4,665 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax [Abstract] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 1,387 | 2,394 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 45 | 38 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 0 | 8 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 | 0 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 1,387 | 2,402 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | 45 | 38 |
Available-for-sale Securities [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Accumulated Other Comprehensive Income (Loss), Other than Temporary Impairment, Not Credit Loss, Net of Tax, Available-for-sale, Debt Securities | 6 | 11 |
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Rolling Maturity [Abstract] |  |  |
Available-for-sale Equity Securities, Amortized Cost Basis | 1,020 | 842 |
Available-for-sale Securities, Equity Securities | 1,097 | 839 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 2,800 | 2,930 |
Available-for-sale Securities | 57,100 | 60,035 |
Equity Securities [Member] |  |  |
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Rolling Maturity [Abstract] |  |  |
Available-for-sale Equity Securities, Amortized Cost Basis |  | 293 |
Available-for-sale Securities, Equity Securities | 0 | 282 |
Cash [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Securities Pledged as Collateral | $ 22 | $ 5 |

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- Definition Available-for-sale securities continuous unrealized loss position twelve months or longer amortized cost. + References No definition available. + Details
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- Definition Available-for-sale securities continuous unrealized loss position less than twelve months, amortized cost. + References No definition available. + Details
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- Definition Percentage of gross unrealized losses depressed less than twenty percent of cost or amortized cost. + References No definition available. + Details
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- Definition Accumulated other comprehensive loss related to portion of other than temporary impairment (OTTI) due to factors other than credit losses on debt securities categorized as available-for-sale that an entity does not intend to sell and which it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis of the debt security. The amount represented by this item is net of tax, as applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aaa) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580 + Details
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- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563 + Details
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- Definition Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563 + Details
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- Definition This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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