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Income Taxes (Schedule Of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Earnings (loss) from continuing operations before income taxes	$ 2,898	$ (3,090)	$ (109)
U.S. statutory income tax rate	21.00%	21.00%	21.00%
Change in tax legislation	0.00%	4.00%	0.00%
State income taxes	1.00%	1.00%	24.00%
Change in unrecognized tax benefits	0.00%	0.00%	(13.00%)
Audit settlements	0.00%	0.00%	15.00%
Other	2.00%	(1.00%)	(19.00%)
Deferred tax asset valuation allowance	(22.00%)	(7.00%)	0.00%
Effective income tax rate	2.00%	18.00%	28.00%

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Income loss from continuing operations before noncontrolling interest.

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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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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 income tax contingencies. Includes, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies.

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