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Income Taxes (Schedule Of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Earnings before income taxes	$ 4,623	$ 7,775	$ 2,898
U.S. statutory income tax rate	21.00%	21.00%	21.00%
State income taxes	1.00%	1.00%	1.00%
Income tax credits	(3.00%)	0.00%	0.00%
Other	(1.00%)	0.00%	2.00%
Deferred tax asset valuation allowance	0.00%	0.00%	(22.00%)
Effective income tax rate	18.00%	22.00%	2.00%

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Income Tax Credits Percentage

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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