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Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
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	1,900,000,000	$ 1,600,000,000
Earnings, Indefinitely Reinvested Abroad Due To Regulatory And Other Capital Requirements	1,800,000,000
Estimated Deferred Tax Liablity Due To Hypothetical Repatriation Of Earnings	11,000,000
Liability for Uncertainty in Income Taxes	$ 2,000,000

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- Definition

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

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Estimated Deferred Tax Liablity Due To Hypothetical Repatriation Of Earnings

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Amount of undistributed earnings of foreign subsidiaries.

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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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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 235
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Amount recognized for uncertainty in income taxes classified as noncurrent.

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-Name Accounting Standards Codification
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