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Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Income Tax Disclosure
Tax at statutory rate, percentage	21.00%	21.00%
United States
Income Tax Disclosure
Deferred tax assets valuation allowance	$ 0		$ 0
Cincinnati Global
Income Tax Disclosure
Deferred tax assets valuation allowance	0		0
Cincinnati Global | United States
Income Tax Disclosure
Operating loss carryforwards	0		0
Cincinnati Global | United Kingdom
Income Tax Disclosure
Operating loss carryforwards	$ 67		$ 78

X

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

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-Topic 740
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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

+ References

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

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