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Income Taxes (Income Taxes and Shareholders' Equity) (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Current taxes: |  |  |
Federal | $ 0 | $ 0 | $ 0
State | 0 | 0 | 0
Foreign | 1 | 0 | 0
Deferred taxes: |  |  |
Federal | 0 | 0 | 0
Foreign | 0 | 0 | 0
Provision (benefit) for income taxes | 1 | 0 | 0
Income taxes charged (credited) to shareholders' equity related to: |  |  |
Change in unrealized gains (losses) on AFS securities | 0 | 0 | 0
Change in AFS securities with OTTI | 0 | 0 | 0
Change in foreign currency translation | 0 | 0 | 0
Total income taxes charged (credited) to shareholders' equity | 0 | 0 | 0
Total effect of income taxes | $ 1 | $ 0 | $ 0

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- Definition Amount of current federal tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, current national tax expense (benefit) for non-US (United States of America) jurisdiction. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(1)(Note 1)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.7) -URI https://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32639-109319 + Details
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