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Reinsurance and indemnification | 6 Months Ended
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Jun. 30, 2021
Reinsurance Disclosures [Abstract] |
Reinsurance and indemnification |
Note 10 | Reinsurance and indemnification
Effects of reinsurance ceded and indemnification programs on property and casualty premiums earned and accident and health insurance premiums and contract charges
($ in millions) |  | Three months ended June 30, |  | Six months ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Property and casualty insurance premiums earned (1) |  | $ | (538) |  |  | $ | (279) |  |  | $ | (1,046) |  |  | $ | (568) |
Accident and health insurance premiums and contract charges |  | (24) |  |  | (3) |  |  | (48) |  |  | (6) |
(1)Includes approximately $475 million of ceded premiums related to the acquisition of National General for the six months ended June 30, 2021.
Effects of reinsurance ceded and indemnification programs on property and casualty insurance claims and claims expense and accident and health insurance policy benefits
($ in millions) |  | Three months ended June 30, |  | Six months ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Property and casualty insurance claims and claims expense (1) |  | $ | (158) |  |  | $ | (210) |  |  | $ | (1,751) |  |  | $ | (341) |
Accident and health insurance policy benefits |  | (26) |  |  | (2) |  |  | (55) |  |  | (8) |
(1)Includes approximately $675 million, $450 million and $275 million of ceded losses related to the Nationwide Catastrophe Reinsurance Program, the Michigan Catastrophic Claims Association and the acquisition of National General, respectively, for the six months ended June 30, 2021, and $167 million of ceded losses related to the Michigan Catastrophic Claims Association for the six months ended June 30, 2020. Reinsurance and indemnification recoverables
Reinsurance and indemnification recoverables, net |  |
($ in millions) |  | June 30, 2021 |  |  |  | December 31, 2020 |  |
Property and casualty |  |  |  |  |  |  |  |
Paid and due from reinsurers and indemnitors |  | $ | 306 |  |  |  |  | $ | 101 |  |  |
Unpaid losses estimated (including IBNR) |  | 9,066 |  |  |  |  | 7,033 |  |  |
Total property and casualty |  | $ | 9,372 |  |  |  |  | $ | 7,134 |  |  |
Allstate Health and Benefits |  | 125 |  |  |  |  | 81 |  |  |
Total |  | $ | 9,497 |  |  |  |  | $ | 7,215 |  |  |
Rollforward of credit loss allowance for reinsurance recoverables |  |  |  |  |  |
($ in millions) |  | Three months ended June 30, |  | Six months ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Property and casualty (1) (2) |  |  |  |  |  |  |  |
Beginning balance |  | $ | (60) |  |  | $ | (59) |  |  | $ | (59) |  |  | $ | (60) |
(Increase) decrease in the provision for credit losses |  | — |  |  | — |  |  | (1) |  |  | 1 |
Ending balance |  | $ | (60) |  |  | $ | (59) |  |  | $ | (60) |  |  | $ | (59) |
Allstate Health and Benefits |  |  |  |  |  |  |  |
Beginning balance |  | $ | (1) |  |  | $ | (1) |  |  | $ | (1) |  |  | $ | (1) |
Increase in the provision for credit losses |  | — |  |  | — |  |  | — |  |  | — |
Write-offs |  | — |  |  | — |  |  | — |  |  | — |
Ending balance |  | $ | (1) |  |  | $ | (1) |  |  | $ | (1) |  |  | $ | (1) |
(1)Primarily related to Run-off Property-Liability reinsurance ceded. (2)Indemnification recoverables are considered collectible based on the industry pool and facility enabling legislation.

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- Definition The entire disclosure pertaining to the existence, magnitude and information about insurance that has been ceded to or assumed from another insurance company, including the methodologies and assumptions used in determining recorded amounts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -URI http://asc.fasb.org/topic&trid=2303980 + Details
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