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Investments - Gross Unrealized Loss by Length of Time (Details) $ in Millions | Jun. 30, 2022 USD ($) Security | Dec. 31, 2021 USD ($) Security
--- | --- | ---
Less than 12 months |  |
Fair Value | $ 3,794 | $ 804
Gross Unrealized Loss | $ (268) | $ (17)
Number of securities | Security | 1,353 | 355
12 months or more |  |
Fair Value | $ 267 | $ 120
Gross Unrealized Loss | $ (44) | $ (9)
Number of securities | Security | 115 | 60
Total |  |
Fair Value | $ 4,061 | $ 924
Gross Unrealized Loss | $ (312) | $ (26)
Number of securities | Security | 1,455 | 410
Obligations of state and political subdivisions |  |
Less than 12 months |  |
Fair Value | $ 1,398 | $ 117
Gross Unrealized Loss | (91) | (3)
12 months or more |  |
Fair Value | 16 | 10
Gross Unrealized Loss | (5) | (1)
Total |  |
Fair Value | 1,414 | 127
Gross Unrealized Loss | (96) | (4)
U.S. government and agencies |  |
Less than 12 months |  |
Fair Value | 40 | 26
Gross Unrealized Loss | (1) | 0
12 months or more |  |
Fair Value | 38 | 32
Gross Unrealized Loss | (5) | (2)
Total |  |
Fair Value | 78 | 58
Gross Unrealized Loss | (6) | (2)
Corporate securities |  |
Less than 12 months |  |
Fair Value | 1,510 | 407
Gross Unrealized Loss | (138) | (12)
12 months or more |  |
Fair Value | 92 | 70
Gross Unrealized Loss | (23) | (5)
Total |  |
Fair Value | 1,602 | 477
Gross Unrealized Loss | (161) | (17)
RMBS |  |
Less than 12 months |  |
Fair Value | 149 | 4
Gross Unrealized Loss | (5) | 0
12 months or more |  |
Fair Value | 1 | 0
Gross Unrealized Loss | 0 | 0
Total |  |
Fair Value | 150 | 4
Gross Unrealized Loss | (5) | 0
CMBS |  |
Less than 12 months |  |
Fair Value | 275 |
Gross Unrealized Loss | (5) |
12 months or more |  |
Fair Value | 0 |
Gross Unrealized Loss | 0 |
Total |  |
Fair Value | 275 |
Gross Unrealized Loss | (5) |
CLOs and CLO warehouse assets: |  |
Less than 12 months |  |
Fair Value | 312 | 226
Gross Unrealized Loss | (15) | 0
12 months or more |  |
Fair Value | 107 | 0
Gross Unrealized Loss | (6) | 0
Total |  |
Fair Value | 419 | 226
Gross Unrealized Loss | (21) | 0
Other |  |
Less than 12 months |  |
Fair Value | 22 |
Gross Unrealized Loss | (1) |
12 months or more |  |
Fair Value | 0 |
Gross Unrealized Loss | 0 |
Total |  |
Fair Value | 22 |
Gross Unrealized Loss | (1) |
Non-U.S. government securities |  |
Less than 12 months |  |
Fair Value | 88 | 24
Gross Unrealized Loss | (12) | (2)
12 months or more |  |
Fair Value | 13 | 8
Gross Unrealized Loss | (5) | (1)
Total |  |
Fair Value | 101 | 32
Gross Unrealized Loss | $ (17) | $ (3)

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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456 + Details
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