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Income Taxes (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jan. 07, 2021
Income Tax [Line Items]
Deferred income taxes	$ 254	$ 254
U.S Federal [Member]
Income Tax [Line Items]
Operating Loss Carryforwards	1,800
Merger [Member]
Income Tax [Line Items]
Other income tax expense benefit	$ 18

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- Definition

Business combination recognized identifiable assets acquired and liabilities assumed deferred income taxes.

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- Definition

Income Tax [Line Items]

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- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
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- Definition

Amount of other income tax expense (benefit).

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
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-Topic 740
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32672-109319

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