Effective Income Tax Rate Reconciliation, Tax Accounting Method Changes, Amount

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- Definition

Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.

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

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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Amount of reasonable estimate for income tax benefit for which accounting for tax effect for remeasurement of deferred tax liability from change in tax rate is incomplete pursuant to Tax Cuts and Jobs Act.

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- Definition

Amount of unrecognized tax benefits.

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Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
Income Taxes (Narrative) (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Income tax benefit for difference in tax rate	$ 0	$ 50,000,000	$ 0
Unrecognized Tax Benefits	34,000,000	34,000,000	0	$ 0
Reduction in net deferred tax liability due to change of corporate income tax rate			495,000,000
Income taxes paid, net	94,000,000	0	18,000,000
Net deferred tax assets, valuation allowance	41,000,000	0
Accumulated Other Comprehensive Income
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reduction in net deferred tax liability due to change of corporate income tax rate			$ 492,000,000
Cincinnati Global
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net deferred tax assets	41,000,000
Net deferred tax assets, valuation allowance	$ 41,000,000	$ 0