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Income Tax Income Tax (Net Operating Loss Carryforward) (Details) $ in Millions | Dec. 31, 2021 USD ($)
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Operating Loss Carryforwards [Line Items] |
Operating Loss Carryforwards | $ 920
No Expiration And No Valuation Allowance [Member] |
Operating Loss Carryforwards [Line Items] |
Operating Loss Carryforwards | 100
Full Valuation Allowance [Member] |
Operating Loss Carryforwards [Line Items] |
Operating Loss Carryforwards | 187
No Expiration And Partial Valuation Allowance [Member] |
Operating Loss Carryforwards [Line Items] |
Operating Loss Carryforwards | 631
Expiration Dates Between 2029 And 2035 With No Valuation Allowance [Member] |
Operating Loss Carryforwards [Line Items] |
Operating Loss Carryforwards | $ 2

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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 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32559-109319 + Details
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