Income Tax (Rate Reconciliation) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income tax expense benefit continuing operations income tax reconciliation
Tax provision at statutory rate	$ (1)	$ (365)	$ (241)
Dividends received deduction	(34)	(38)	(38)
Tax credits	(15)	(24)	(29)
Change in valuation allowance	18	0	0
Return to provision	12	2	(5)
Adjustments to deferred tax	(48)	(6)	(22)
Other, net	(3)	(2)	(3)
Provision for income tax expense (benefit)	$ (71)	$ (433)	$ (338)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	1654.00%	25.00%	30.00%

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

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

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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Amount 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 tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority noncontrolling interest income (loss), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, increase (decrease) in enacted tax rate, prior year income taxes, increase (decrease) in deferred tax asset valuation allowance, and other adjustments.

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