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Income Taxes (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019
Operating Loss Carryforwards [Line Items] |  |
Tax credit carryforward, amount | $ 58 | $ 149
Allocations for bad debt deductions of former thrift subsidiaries included in retained earnings | $ 100 | $ 100
Income tax examination no longer subject to prior date | 2013 |

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- Definition Allocation for bad debt deductions of former thrift subsidiaries for which no income tax has been provided which is included in retained earnings + References No definition available. + Details
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- Definition We are no longer subject to state, local and foreign income tax examinations for periods prior to this year. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The amount of the tax credit 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=84230637&loc=d3e32559-109319 + Details
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