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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 |
--- | --- | ---
Dec. 31, 2020 USD ($) security | Jun. 30, 2021 USD ($) security
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  |
Less Than or Equal to Twelve Months | $ 4,808 | $ 10,310
Greater Than Twelve Months | 1,068 | 1,394
Fair Value - Total | 5,876 | 11,704
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI |  |
Less Than or Equal to Twelve Months | 117 | 239
Greater Than Twelve Months | 81 | 89
Gross Unrealized Losses - Total | $ 198 | $ 328
Total number of fixed maturity AFS securities in an unrealized loss position | security | 802 | 1,368
Unrealized holding gains (losses) arising during the period | $ 1 |
Corporate Bonds [Member] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  |
Less Than or Equal to Twelve Months | 3,039 | $ 6,476
Greater Than Twelve Months | 607 | 1,055
Fair Value - Total | 3,646 | 7,531
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI |  |
Less Than or Equal to Twelve Months | 92 | 199
Greater Than Twelve Months | 58 | 73
Gross Unrealized Losses - Total | 150 | 272
U.S. Government Bonds [Member] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  |
Less Than or Equal to Twelve Months | 28 | 26
Fair Value - Total | 28 | 26
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI |  |
Less Than or Equal to Twelve Months | 1 | 2
Gross Unrealized Losses - Total | 1 | 2
State And Municipal Bonds [Member] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  |
Less Than or Equal to Twelve Months |  | 389
Greater Than Twelve Months |  | 1
Fair Value - Total |  | 390
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI |  |
Less Than or Equal to Twelve Months |  | 7
Gross Unrealized Losses - Total |  | 7
Foreign Government Bonds [Member] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  |
Less Than or Equal to Twelve Months | 57 | 86
Greater Than Twelve Months |  | 30
Fair Value - Total | 57 | 116
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI |  |
Less Than or Equal to Twelve Months | 1 | 3
Gross Unrealized Losses - Total | 1 | 3
RMBS [Member] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  |
Less Than or Equal to Twelve Months | 45 | 109
Greater Than Twelve Months | 7 | 19
Fair Value - Total | 52 | 128
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI |  |
Less Than or Equal to Twelve Months | 1 | 1
Gross Unrealized Losses - Total | 1 | 1
CMBS [Member] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  |
Less Than or Equal to Twelve Months |  | 306
Greater Than Twelve Months |  | 5
Fair Value - Total |  | 311
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI |  |
Less Than or Equal to Twelve Months |  | 7
Gross Unrealized Losses - Total |  | 7
ABS [Member] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  |
Less Than or Equal to Twelve Months | 1,527 | 2,889
Greater Than Twelve Months | 358 | 136
Fair Value - Total | 1,885 | 3,025
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI |  |
Less Than or Equal to Twelve Months | 9 | 19
Greater Than Twelve Months | 6 | 3
Gross Unrealized Losses - Total | 15 | 22
Hybrid And Redeemable Preferred Securities [Member] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  |
Less Than or Equal to Twelve Months | 112 | 29
Greater Than Twelve Months | 96 | 148
Fair Value - Total | 208 | 177
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI |  |
Less Than or Equal to Twelve Months | 13 | 1
Greater Than Twelve Months | 17 | 13
Gross Unrealized Losses - Total | $ 30 | $ 14

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