Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Taxes [Abstract]
U.S. Statutory Tax Rate	21.00%	21.00%	21.00%
Valuation allowance on deferred tax assets	$ 0	$ 0
Undistributed accumulated earnings of foreign subsidiaries	3,200,000,000	$ 2,700,000,000
Earnings, Indefinitely Reinvested Abroad Due To Regulatory And Other Capital Requirements	3,000,000,000.0
Estimated Deferred Tax Liablity Due To Hypothetical Repatriation Of Earnings	42,000,000
Liability for Uncertainty in Income Taxes	$ 3,000,000

Earnings, Indefinitely Reinvested Abroad Due To Regulatory And Other Capital Requirements

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- Definition

Estimated Deferred Tax Liablity Due To Hypothetical Repatriation Of Earnings

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- Definition

Amount of undistributed earnings of foreign subsidiaries.

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- 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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- Definition

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

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount recognized for uncertainty in income taxes classified as noncurrent.

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