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Investments (Fair Value And Gross Unrealized Losses In A Continuous Unrealized Loss Position) (Details) - Fixed Maturity AFS Securities [Member] $ in Millions | 12 Months Ended
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Dec. 31, 2022 USD ($) security | Dec. 31, 2021 USD ($) security
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI |  |
Less Than or Equal to Twelve Months | $ 71,770 | $ 16,786
Greater Than Twelve Months | 11,352 | 1,973
Continuous Unrealized Loss Position, Total | 83,122 | 18,759
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months | 10,425 | 313
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer | 2,593 | 138
Debt Securities, Available-for-Sale, Unrealized Loss Position | $ 13,018 | $ 451
Total number of fixed maturity AFS securities in an unrealized loss position | security | 8,175 | 2,597
Unrealized holding gains (losses) arising during the period | $ 6 | $ 8
Corporate Bonds [Member] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI |  |
Less Than or Equal to Twelve Months | 59,929 | 10,796
Greater Than Twelve Months | 7,094 | 1,567
Continuous Unrealized Loss Position, Total | 67,023 | 12,363
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months | 9,049 | 234
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer | 1,955 | 115
Debt Securities, Available-for-Sale, Unrealized Loss Position | 11,004 | 349
U.S. Government Bonds [Member] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI |  |
Less Than or Equal to Twelve Months | 261 | 6
Greater Than Twelve Months | 27 | 26
Continuous Unrealized Loss Position, Total | 288 | 32
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months | 25 |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer | 6 | 2
Debt Securities, Available-for-Sale, Unrealized Loss Position | 31 | 2
State And Municipal Bonds [Member] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI |  |
Less Than or Equal to Twelve Months | 1,958 | 522
Greater Than Twelve Months | 237 | 24
Continuous Unrealized Loss Position, Total | 2,195 | 546
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months | 440 | 11
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer | 72 | 1
Debt Securities, Available-for-Sale, Unrealized Loss Position | 512 | 12
Foreign Government Bonds [Member] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI |  |
Less Than or Equal to Twelve Months | 130 | 61
Greater Than Twelve Months | 58 | 56
Continuous Unrealized Loss Position, Total | 188 | 117
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months | 19 | 3
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer | 28 | 2
Debt Securities, Available-for-Sale, Unrealized Loss Position | 47 | 5
RMBS [Member] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI |  |
Less Than or Equal to Twelve Months | 1,490 | 262
Greater Than Twelve Months | 193 | 22
Continuous Unrealized Loss Position, Total | 1,683 | 284
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months | 179 | 3
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer | 43 | 1
Debt Securities, Available-for-Sale, Unrealized Loss Position | 222 | 4
CMBS [Member] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI |  |
Less Than or Equal to Twelve Months | 1,224 | 446
Greater Than Twelve Months | 320 | 37
Continuous Unrealized Loss Position, Total | 1,544 | 483
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months | 156 | 12
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer | 90 | 2
Debt Securities, Available-for-Sale, Unrealized Loss Position | 246 | 14
ABS [Member] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI |  |
Less Than or Equal to Twelve Months | 6,715 | 4,646
Greater Than Twelve Months | 3,326 | 165
Continuous Unrealized Loss Position, Total | 10,041 | 4,811
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months | 552 | 49
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer | 374 | 5
Debt Securities, Available-for-Sale, Unrealized Loss Position | 926 | 54
Hybrid And Redeemable Preferred Securities [Member] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI |  |
Less Than or Equal to Twelve Months |  | 47
Greater Than Twelve Months |  | 76
Continuous Unrealized Loss Position, Total |  | 123
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months |  | 1
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer |  | 10
Debt Securities, Available-for-Sale, Unrealized Loss Position |  | $ 11
Preferred Stock [Member] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI |  |
Less Than or Equal to Twelve Months | 63 |
Greater Than Twelve Months | 97 |
Continuous Unrealized Loss Position, Total | 160 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months | 5 |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer | 25 |
Debt Securities, Available-for-Sale, Unrealized Loss Position | $ 30 |

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