XML 48 R34.htm IDEA: XBRL DOCUMENT
v3.25.1

Credit Losses (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2025
Credit Loss [Abstract] |
Credit Loss Allowance Activity [Table] | The following tables summarize the Company's allowance for expected credit losses by pooled asset for the three months ended March 31, 2025 and 2024, respectively:
March 31, 2025 |  | December 31, 2024 |  | Provision for expected credit losses |  | Write-offs |  | March 31, 2025
Premiums Receivable |  | $ | 26 |  |  | $ | 10 |  |  | $ | (3) |  |  | $ | 33 |
Reinsurance Recoverables |  | 75 |  |  | (21) |  |  | — |  |  | 54 |
Total |  | $ | 101 |  |  | $ | (11) |  |  | $ | (3) |  |  | $ | 87 |
March 31, 2024 |  | December 31, 2023 |  | Provision for expected credit losses |  | Write-offs |  | March 31, 2024
Premiums Receivable |  | $ | 49 |  |  | $ | (23) |  |  | $ | — |  |  | $ | 26 |
Reinsurance Recoverables |  | 97 |  |  | (22) |  |  | — |  |  | 75 |
Total |  | $ | 146 |  |  | $ | (45) |  |  | $ | — |  |  | $ | 101 |
As of March 31, 2025 and 2024, the Company had no allowance for expected credit losses related to its investment holdings.

X
- Definition Credit Loss Allowance Activity [Table] + References No definition available. + Details
Name: | acic_CreditLossAllowanceActivityTableTextBlock
Namespace Prefix: | acic_
Data Type: | dtr-types1:textBlockItemType
Balance Type: | na
Period Type: | duration

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