XML 33 R43.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Investments and Derivative Instruments Level 4 Net Realized Capital Gains (Losses) (Details) - Derivative, Name [Domain] - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014 | Dec. 31, 2014
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | $ 66,321 |  |  |  | $ 66,321 |  | $ 72,850
Derivative, Fair Value, Net |  | (605) |  |  |  | (605) |  | (639)
Gain (Loss) on Investments [Abstract] |  |  |  |  |  |  |  |
Gain on Derivative Instruments, Pretax |  | 121 |  | $ 122 |  | 318 | $ 305 |
Loss on Derivative Instruments, Pretax |  | (112) |  | (33) |  | (260) | (162) |
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net |  | 11 |  | 7 |  | 23 | 29 |
Periodic Net Coupon Settlements on Credit Derivatives |  | 4 |  | 2 |  | 5 | 1 |
Total Realized Investment Gains (Losses) |  | 9 |  | (4) |  | 14 | (39) |
Gain (Loss) on Investments, Excluding Other than Temporary Impairments |  | 20 |  | 3 |  | 37 | (10) |
Derivative, Gain (Loss) on Derivative, Net |  | (27) |  | (21) |  |  |  |
Proceeds from Sale of Available-for-sale Securities |  | 5,600 |  | 5,800 |  | 11,800 | 14,300 |
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost |  | 12,853 |  |  |  | 12,853 |  | 6,318
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 12,558 |  |  |  | 12,558 |  | 6,174
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  | 295 |  |  |  | 295 |  | 144
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost |  | 2,980 |  |  |  | 2,980 |  | 4,667
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  | 2,841 |  |  |  | 2,841 |  | 4,429
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  | 136 |  |  |  | 136 |  | 241
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost |  | 15,833 |  |  |  | 15,833 |  | 10,985
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  | 15,399 |  |  |  | 15,399 |  | 10,603
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss |  | 431 |  |  |  | 431 |  | 385
Derivative Asset, Fair Value, Gross Asset |  | 1,052 |  |  |  | 1,052 |  | 1,175
Derivative Liability, Fair Value, Gross Liability |  | 1,626 |  |  |  | 1,626 |  | 1,741
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement |  | 1,162 |  |  |  | 1,162 |  | 1,267
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement |  | 1,767 |  |  |  | 1,767 |  | 1,906
GMWB Hedging Instruments [Member] | UNITED STATES |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 11,732 |  |  |  | 11,732 |  | 14,442
Derivative, Fair Value, Net |  | 134 |  |  |  | 134 |  | 174
Three Win Related Foreign Currency Swaps [Member] | JAPAN |  |  |  |  |  |  |  |
Gain (Loss) on Investments [Abstract] |  |  |  |  |  |  |  |
Change in Unrealized Gain (Loss) on Hedged Item in Foreign Currency Fair Value Hedge |  | 16 |  | (18) |  | 16 | (46) |
Mortgages [Member] |  |  |  |  |  |  |  |
Gain (Loss) on Investments [Abstract] |  |  |  |  |  |  |  |
Valuation Allowances and Reserves, Adjustments |  | 0 |  | 3 |  | 3 | 3 |
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member] |  |  |  |  |  |  |  |
Gain (Loss) on Investments [Abstract] |  |  |  |  |  |  |  |
Gain (Loss) on Investments, Excluding Other than Temporary Impairments |  | 6 |  | 82 |  | 43 | 125 |
Collateralized Debt Obligations [Member] |  |  |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost | [1] | 928 |  |  |  | 928 |  | 748
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | [1] | 925 |  |  |  | 925 |  | 743
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | [1] | 3 |  |  |  | 3 |  | 5
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost | [1] | 1,232 |  |  |  | 1,232 |  | 1,489
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | [1] | 1,217 |  |  |  | 1,217 |  | 1,461
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | [1] | 12 |  |  |  | 12 |  | 31
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost | [1] | 2,160 |  |  |  | 2,160 |  | 2,237
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | [1] | 2,142 |  |  |  | 2,142 |  | 2,204
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | [1] | 15 |  |  |  | 15 |  | 36
Asset-backed Securities [Member] |  |  |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost |  | 836 |  |  |  | 836 |  | 897
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 834 |  |  |  | 834 |  | 893
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  | 2 |  |  |  | 2 |  | 4
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost |  | 396 |  |  |  | 396 |  | 473
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  | 367 |  |  |  | 367 |  | 440
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  | 29 |  |  |  | 29 |  | 33
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost |  | 1,232 |  |  |  | 1,232 |  | 1,370
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  | 1,201 |  |  |  | 1,201 |  | 1,333
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss |  | 31 |  |  |  | 31 |  | 37
Commercial Mortgage Backed Securities [Member] |  |  |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost |  | 930 |  |  |  | 930 |  | 230
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 912 |  |  |  | 912 |  | 227
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  | 18 |  |  |  | 18 |  | 3
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost |  | 194 |  |  |  | 194 |  | 319
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  | 184 |  |  |  | 184 |  | 306
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  | 10 |  |  |  | 10 |  | 13
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost |  | 1,124 |  |  |  | 1,124 |  | 549
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  | 1,096 |  |  |  | 1,096 |  | 533
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss |  | 28 |  |  |  | 28 |  | 16
Corporate Debt Securities [Member] |  |  |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost |  | 6,266 |  |  |  | 6,266 |  | 3,082
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 6,084 |  |  |  | 6,084 |  | 2,980
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  | 182 |  |  |  | 182 |  | 102
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost |  | 575 |  |  |  | 575 |  | 1,177
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  | 523 |  |  |  | 523 |  | 1,068
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  | 52 |  |  |  | 52 |  | 109
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost |  | 6,841 |  |  |  | 6,841 |  | 4,259
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  | 6,607 |  |  |  | 6,607 |  | 4,048
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss |  | 234 |  |  |  | 234 |  | 211
Foreign Government Debt Securities [Member] |  |  |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost |  | 460 |  |  |  | 460 |  | 363
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 445 |  |  |  | 445 |  | 349
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  | 15 |  |  |  | 15 |  | 14
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost |  | 109 |  |  |  | 109 |  | 227
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  | 100 |  |  |  | 100 |  | 212
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  | 9 |  |  |  | 9 |  | 15
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost |  | 569 |  |  |  | 569 |  | 590
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  | 545 |  |  |  | 545 |  | 561
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss |  | 24 |  |  |  | 24 |  | 29
Municipal Bonds [Member] |  |  |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost |  | 1,159 |  |  |  | 1,159 |  | 74
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 1,128 |  |  |  | 1,128 |  | 73
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  | 31 |  |  |  | 31 |  | 1
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost |  | 35 |  |  |  | 35 |  | 86
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  | 32 |  |  |  | 32 |  | 82
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  | 3 |  |  |  | 3 |  | 4
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost |  | 1,194 |  |  |  | 1,194 |  | 160
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  | 1,160 |  |  |  | 1,160 |  | 155
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss |  | 34 |  |  |  | 34 |  | 5
Residential Mortgage Backed Securities [Member] |  |  |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost |  | 1,064 |  |  |  | 1,064 |  | 320
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 1,057 |  |  |  | 1,057 |  | 318
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  | 7 |  |  |  | 7 |  | 2
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost |  | 310 |  |  |  | 310 |  | 433
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  | 297 |  |  |  | 297 |  | 416
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  | 13 |  |  |  | 13 |  | 17
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost |  | 1,374 |  |  |  | 1,374 |  | 753
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  | 1,354 |  |  |  | 1,354 |  | 734
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss |  | 20 |  |  |  | 20 |  | 19
US Treasury Securities [Member] |  |  |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost |  | 846 |  |  |  | 846 |  | 432
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 827 |  |  |  | 827 |  | 431
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  | 19 |  |  |  | 19 |  | 1
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost |  | 62 |  |  |  | 62 |  | 361
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  | 61 |  |  |  | 61 |  | 357
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  | 1 |  |  |  | 1 |  | 4
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost |  | 908 |  |  |  | 908 |  | 793
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  | 888 |  |  |  | 888 |  | 788
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss |  | 20 |  |  |  | 20 |  | 5
Debt Securities [Member] |  |  |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost |  | 12,489 |  |  |  | 12,489 |  | 6,146
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value |  | 12,212 |  |  |  | 12,212 |  | 6,014
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  | 277 |  |  |  | 277 |  | 132
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost |  | 2,913 |  |  |  | 2,913 |  | 4,565
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  | 2,781 |  |  |  | 2,781 |  | 4,342
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  | 129 |  |  |  | 129 |  | 226
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost |  | 15,402 |  |  |  | 15,402 |  | 10,711
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  | 14,993 |  |  |  | 14,993 |  | 10,356
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss |  | 406 |  |  |  | 406 |  | 358
Equity Securities [Member] |  |  |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost | [2] | 364 |  |  |  | 364 |  | 172
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | [2] | 346 |  |  |  | 346 |  | 160
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | [2] | 18 |  |  |  | 18 |  | 12
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost | [2] | 67 |  |  |  | 67 |  | 102
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | [2] | 60 |  |  |  | 60 |  | 87
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | [2] | 7 |  |  |  | 7 |  | 15
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost | [2] | 431 |  |  |  | 431 |  | 274
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | [2] | 406 |  |  |  | 406 |  | 247
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | [2] | 25 |  |  |  | 25 |  | 27
Other Investments [Member] |  |  |  |  |  |  |  |
Gain (Loss) on Investments [Abstract] |  |  |  |  |  |  |  |
Total Realized Investment Gains (Losses) | [3] | 34 |  | (64) |  | 7 | (135) |
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 4,138 |  |  |  | 4,138 |  | 4,142
Derivative, Fair Value, Net |  | 7 |  |  |  | 7 |  | 25
Gain (Loss) on Investments [Abstract] |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net |  | 21 |  | 23 |  | 28 | 47 |
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 50 |  |  |  | 50 |  | 55
Derivative Liability, Fair Value, Gross Liability |  | 43 |  |  |  | 43 |  | 30
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest Rate Contract [Member] |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 3,995 |  |  |  | 3,995 |  | 3,999
Derivative, Fair Value, Net |  | 27 |  |  |  | 27 |  | 44
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 46 |  |  |  | 46 |  | 52
Derivative Liability, Fair Value, Gross Liability |  | 19 |  |  |  | 19 |  | 8
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign Exchange Contract [Member] |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 143 |  |  |  | 143 |  | 143
Derivative, Fair Value, Net |  | (20) |  |  |  | (20) |  | (19)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 4 |  |  |  | 4 |  | 3
Derivative Liability, Fair Value, Gross Liability |  | 24 |  |  |  | 24 |  | 22
Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 49 |  |  |  | 49 |  | 32
Derivative, Fair Value, Net |  | 0 |  |  |  | 0 |  | 0
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 0 |  |  |  | 0 |  | 0
Derivative Liability, Fair Value, Gross Liability |  | 0 |  |  |  | 0 |  | 0
Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] | Interest Rate Contract [Member] |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 49 |  |  |  | 49 |  | 32
Derivative, Fair Value, Net |  | 0 |  |  |  | 0 |  | 0
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 0 |  |  |  | 0 |  | 0
Derivative Liability, Fair Value, Gross Liability |  | 0 |  |  |  | 0 |  | 0
Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 62,134 |  |  |  | 62,134 |  | 68,676
Derivative, Fair Value, Net |  | (612) |  |  |  | (612) |  | (664)
Gain (Loss) on Investments [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  | (11) | [4] | (107) | [4] | (46) | (167) |
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 1,112 |  |  |  | 1,112 |  | 1,212
Derivative Liability, Fair Value, Gross Liability |  | 1,724 |  |  |  | 1,724 |  | 1,876
Not Designated as Hedging Instrument [Member] | GMWB Hedging Instruments [Member] | UNITED STATES |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 11,732 |  |  |  | 11,732 |  | 14,442
Derivative, Fair Value, Net |  | 134 |  |  |  | 134 |  | 174
Gain (Loss) on Investments [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  | (66) |  | (54) |  | (53) | (71) |
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 246 |  |  |  | 246 |  | 289
Derivative Liability, Fair Value, Gross Liability |  | 112 |  |  |  | 112 |  | 115
Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] |  |  |  |  |  |  |  |
Gain (Loss) on Investments [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  | 7 |  | (89) |  | (5) | (145) |
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] |  |  |  |  |  |  |  |
Gain (Loss) on Investments [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  | 1 |  | (5) |  | 8 | (4) |
Not Designated as Hedging Instrument [Member] | Three Win Related Foreign Currency Swaps [Member] | JAPAN |  |  |  |  |  |  |  |
Gain (Loss) on Investments [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net | [5] | (17) |  | 13 |  |  |  |
Not Designated as Hedging Instrument [Member] | Macro Hedge Program [Member] | UNITED STATES |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 4,591 |  |  |  | 4,591 |  | 6,383
Derivative, Fair Value, Net |  | 165 |  |  |  | 165 |  | 141
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 200 |  |  |  | 200 |  | 180
Derivative Liability, Fair Value, Gross Liability |  | 35 |  |  |  | 35 |  | 39
Coinsurance and Modified Coinsurance Reinsurance Contracts [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 921 |  |  |  | 921 |  | 974
Derivative, Fair Value, Net |  | 60 |  |  |  | 60 |  | 34
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 60 |  |  |  | 60 |  | 34
Derivative Liability, Fair Value, Gross Liability |  | 0 |  |  |  | 0 |  | 0
Put Option [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 500 |  |  |  | 500 |  | 500
Derivative, Fair Value, Net |  | 9 |  |  |  | 9 |  | 12
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 9 |  |  |  | 9 |  | 12
Derivative Liability, Fair Value, Gross Liability |  | 0 |  |  |  | 0 |  | 0
GMWB Reinsurance [Member] | Not Designated as Hedging Instrument [Member] | UNITED STATES |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 3,366 |  |  |  | 3,366 |  | 3,659
Derivative, Fair Value, Net |  | 50 |  |  |  | 50 |  | 56
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 50 |  |  |  | 50 |  | 56
Derivative Liability, Fair Value, Gross Liability |  | 0 |  |  |  | 0 |  | 0
GMWB Product Derivatives [Member] | Not Designated as Hedging Instrument [Member] | UNITED STATES |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 16,361 |  |  |  | 16,361 |  | 17,908
Derivative, Fair Value, Net |  | (112) |  |  |  | (112) |  | (139)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 0 |  |  |  | 0 |  | 0
Derivative Liability, Fair Value, Gross Liability |  | 112 |  |  |  | 112 |  | 139
Commodity Option [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 637 |  |  |  | 637 |  | 0
Derivative, Fair Value, Net |  | 3 |  |  |  | 3 |  | 0
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 3 |  |  |  | 3 |  | 0
Derivative Liability, Fair Value, Gross Liability |  | 0 |  |  |  | 0 |  | 0
Equity Contract [Member] | GMWB Hedging Instruments [Member] | UNITED STATES |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 1,719 |  |  |  | 1,719 |  | 3,761
Derivative, Fair Value, Net |  | 10 |  |  |  | 10 |  | 39
Equity Contract [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 129 |  |  |  | 129 |  | 635
Derivative, Fair Value, Net |  | (1) |  |  |  | (1) |  | 2
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 28 |  |  |  | 28 |  | 31
Derivative Liability, Fair Value, Gross Liability |  | 29 |  |  |  | 29 |  | 29
Credit Derivatives in Offsetting Positions [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 4,158 |  |  |  | 4,158 |  | 5,343
Derivative, Fair Value, Net |  | (2) |  |  |  | (2) |  | (3)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 46 |  |  |  | 46 |  | 53
Derivative Liability, Fair Value, Gross Liability |  | 48 |  |  |  | 48 |  | 56
Credit Default Swap, Selling Protection [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 3,067 |  |  |  | 3,067 |  | 1,487
Derivative, Fair Value, Net |  | 4 |  |  |  | 4 |  | 3
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 30 |  |  |  | 30 |  | 14
Derivative Liability, Fair Value, Gross Liability |  | 26 |  |  |  | 26 |  | 11
Credit Default Swap, Buying Protection [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 209 |  |  |  | 209 |  | 595
Derivative, Fair Value, Net |  | 2 |  |  |  | 2 |  | (6)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 4 |  |  |  | 4 |  | 4
Derivative Liability, Fair Value, Gross Liability |  | 2 |  |  |  | 2 |  | 10
Three Win Related Foreign Currency Swaps [Member] | Not Designated as Hedging Instrument [Member] | JAPAN |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 1,319 |  |  |  | 1,319 |  | 1,319
Derivative, Fair Value, Net |  | (458) |  |  |  | (458) |  | (427)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 0 |  |  |  | 0 |  | 0
Derivative Liability, Fair Value, Gross Liability |  | 458 |  |  |  | 458 |  | 427
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 186 |  |  |  | 186 |  | 177
Derivative, Fair Value, Net |  | 8 |  |  |  | 8 |  | 1
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 8 |  |  |  | 8 |  | 3
Derivative Liability, Fair Value, Gross Liability |  | 0 |  |  |  | 0 |  | 2
Interest Rate Contract [Member] | GMWB Hedging Instruments [Member] | UNITED STATES |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 3,520 |  |  |  | 3,520 |  | 3,640
Derivative, Fair Value, Net |  | 8 |  |  |  | 8 |  | 11
Interest Rate Contract [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 14,958 |  |  |  | 14,958 |  | 15,254
Derivative, Fair Value, Net |  | (474) |  |  |  | (474) |  | (512)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 428 |  |  |  | 428 |  | 536
Derivative Liability, Fair Value, Gross Liability |  | 902 |  |  |  | 902 |  | 1,048
Macro Hedge Program [Member] | UNITED STATES |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 4,591 |  |  |  | 4,591 |  | 6,383
Derivative, Fair Value, Net |  | 165 |  |  |  | 165 |  | 141
Macro Hedge Program [Member] | Not Designated as Hedging Instrument [Member] | UNITED STATES |  |  |  |  |  |  |  |
Gain (Loss) on Investments [Abstract] |  |  |  |  |  |  |  |
Derivative, Gain (Loss) on Derivative, Net |  | (23) |  | $ (15) |  | (27) | $ (25) |
Other Liabilities [Member] |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 19,774 |  |  |  | 19,774 |  | 26,791
Derivative, Fair Value, Net |  | (882) |  |  |  | (882) |  | (930)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 462 |  |  |  | 462 |  | 551
Derivative Liability, Fair Value, Gross Liability |  | 1,344 |  |  |  | 1,344 |  | 1,481
Fixed Maturities [Member] |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 448 |  |  |  | 448 |  | 454
Derivative, Fair Value, Net |  | (3) |  |  |  | (3) |  | 2
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 0 |  |  |  | 0 |  | 2
Derivative Liability, Fair Value, Gross Liability |  | 3 |  |  |  | 3 |  | 0
Other Investments [Member] |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 25,401 |  |  |  | 25,401 |  | 23,014
Derivative, Fair Value, Net |  | 308 |  |  |  | 308 |  | 364
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 590 |  |  |  | 590 |  | 624
Derivative Liability, Fair Value, Gross Liability |  | 282 |  |  |  | 282 |  | 260
Reinsurance Recoverable [Member] |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 4,287 |  |  |  | 4,287 |  | 4,633
Derivative, Fair Value, Net |  | 110 |  |  |  | 110 |  | 90
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 110 |  |  |  | 110 |  | 90
Derivative Liability, Fair Value, Gross Liability |  | 0 |  |  |  | 0 |  | 0
Other Policyholder Funds and Benefits Payable [Member] |  |  |  |  |  |  |  |
Net Realized Capital Gains (Losses) [Line Items] |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | 16,411 |  |  |  | 16,411 |  | 17,958
Derivative, Fair Value, Net |  | (138) |  |  |  | (138) |  | (165)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] |  |  |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 0 |  |  |  | 0 |  | 0
Derivative Liability, Fair Value, Gross Liability |  | $ 138 |  |  |  | $ 138 |  | $ 165
[1] | Unrealized losses exclude the change in fair value of bifurcated embedded derivative features of certain securities, for which changes in fair value are recorded in net realized capital gains (losses).
[2] | As of June 30, 2015 and December 31, 2014, excludes equity securities, FVO which are included in equity securities, AFS on the Condensed Consolidated Balance Sheets.
[3] | Primarily consists of changes in the value of non-qualifying derivatives, transactional foreign currency revaluation gains (losses) on yen denominated fixed payout annuity liabilities and gains (losses) on non-qualifying derivatives used to hedge the foreign currency exposure of the liabilities. For the three months ended June 30, 2015 and 2014, gains (losses) from transactional foreign currency revaluation of the yen denominated fixed payout annuity liabilities were $16 and $(18), respectively. For the six months ended June 30, 2015 and 2014, gains (losses) from transactional foreign currency revaluation of the yen denominated fixed payout annuity liabilities were $16 and $(46), respectively. For the three months ended June 30, 2015 and 2014, gains (losses) on instruments used to hedge the foreign currency exposure on the fixed payout annuities were $(17) and $13, respectively. For the six months ended June 30, 2015 and 2014, gains (losses) on instruments used to hedge the foreign currency exposure on the fixed payout annuities were $(31) and $28, respectively.
[4] | {F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOmZmNzlhNDA4NzJjNDRiYmViOGEzY2QzY2EyODJjMzM5fFRleHRTZWxlY3Rpb246NTM3QjVCQTcyMDM1RDI0MzYwMUUyOUE4MzdDQzkwRTIM}
[5] | he associated liability adjustment for changes in foreign exchange spot rates through realized capital gains of $16 and $(18) for the three months ended June 30, 2015 and 2014, respectively

X
- Definition Available-for-sale securities continuous unrealized loss position amortized cost. + References No definition available. + Details
Name: | hig_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAmortizedCost
Namespace Prefix: | hig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Available-for-sale securities continuous unrealized loss position twelve months or longer amortized cost. + References No definition available. + Details
Name: | hig_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerAmortizedCost
Namespace Prefix: | hig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Available-for-sale securities continuous unrealized loss position less than twelve months, amortized cost. + References No definition available. + Details
Name: | hig_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessthanTwelveMonthsAmortizedCost
Namespace Prefix: | hig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Periodic net coupon settlements on credit derivatives. + References No definition available. + Details
Name: | hig_PeriodicNetCouponSettlementsOnCreditDerivatives
Namespace Prefix: | hig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale in a continuous loss position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for less than twelve months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for twelve months or longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of the increase (decrease) in fair value of the hedged item in a foreign currency fair value hedge which was recognized in earnings, net of offsets by the gain (loss) on the hedging instrument to the extent that the fair value hedge was determined to be effective. + References No definition available. + Details
Name: | us-gaap_ChangeInUnrealizedGainLossOnHedgedItemInForeignCurrencyFairValueHedge1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and elected not to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
Name: | us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226000-175313 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=51814546&loc=SL51823488-111719 + Details
Name: | us-gaap_DerivativeFairValueOfDerivativeAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=51814546&loc=SL51823488-111719 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226000-175313 + Details
Name: | us-gaap_DerivativeFairValueOfDerivativeLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value of the assets less the liabilities of a derivative or group of derivatives. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13495-108611 + Details
Name: | us-gaap_DerivativeFairValueOfDerivativeNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959 + Details
Name: | us-gaap_DerivativeGainLossOnDerivativeNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4D -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624177-113959 + Details
Name: | us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and elected not to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
Name: | us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_GainLossOnInvestmentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any gains (losses) realized during the period from the sale of investments accounted for under the cost method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (b)(7) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20187-122688 + Details
Name: | us-gaap_GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Aggregate gain on all derivative instruments recognized in earnings during the period, before tax effects. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5618551-113959 + Details
Name: | us-gaap_GainOnDerivativeInstrumentsPretax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Aggregate loss on all derivative instruments charged against earnings during the period, before tax effects. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5618551-113959 + Details
Name: | us-gaap_LossOnDerivativeInstrumentsPretax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 8B -URI http://asc.fasb.org/extlink&oid=27724398&loc=SL6284393-111563 + Details
Name: | us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26853-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The net realized gains or losses on investments during the period, not including gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.3(a)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 325 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6485959&loc=d3e22529-158502 + Details
Name: | us-gaap_RealizedInvestmentGainsLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfGainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostIncomeStatementReportedAmountsSummaryLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total of the adjustments in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
Name: | us-gaap_ValuationAllowancesAndReservesAdjustments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=hig_GmwbHedgingInstrumentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=hig_ThreeWinRelatedForeignCurrencySwapsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=country_JP
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MortgageLoansOnRealEstateLoanTypeAxis=us-gaap_MortgagesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis=us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_CollateralizedDebtObligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_CommercialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_ForeignGovernmentDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_MunicipalBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_ResidentialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_DebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_OtherInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_FairValueHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=hig_MacroHedgeProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeByNatureAxis=hig_CoinsuranceAndModifiedCoinsuranceReinsuranceContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeByNatureAxis=us-gaap_PutOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeByNatureAxis=hig_GmwbReinsuranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeByNatureAxis=hig_GmwbProductDerivativesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeByNatureAxis=us-gaap_CommodityOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeByNatureAxis=us-gaap_EquityContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeByNatureAxis=hig_CreditDerivativesInOffsettingPositionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeByNatureAxis=us-gaap_CreditDefaultSwapSellingProtectionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeByNatureAxis=us-gaap_CreditDefaultSwapBuyingProtectionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeByNatureAxis=hig_ThreeWinRelatedForeignCurrencySwapsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeByNatureAxis=us-gaap_ForeignExchangeContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeByNatureAxis=us-gaap_InterestRateContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeByNatureAxis=hig_MacroHedgeProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_FixedMaturitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_ReinsuranceRecoverableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=hig_OtherPolicyholderFundsAndBenefitsPayableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |