Income Taxes - Additional Information (Details) - USD ($)	9 Months Ended
Jun. 30, 2022	Sep. 30, 2021
Income Tax Contingency [Line Items]
Federal income tax rate	21.00%
Minimum percentage of tax positions	50.00%
Liability for unrecognized tax amount	$ 0	$ 0
Federal Income Taxes
Income Tax Contingency [Line Items]
Reserves for uncertain tax positions	0	0
State and Local Income Taxes
Income Tax Contingency [Line Items]
Reserves for uncertain tax positions	$ 0	$ 0

Minimum percentage of tax positions.

No definition available.

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- Definition

Amount of deferred tax liability not recognized because of the exceptions to comprehensive recognition of deferred taxes related to a policyholders' surplus.

+ References

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-Publisher FASB
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+ Details

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- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of unrecognized tax benefits.

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