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Income Taxes (Summary Of Effective Income Tax Rate On Continuing Operations) (Details) | 4 Months Ended | 8 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 30, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract] |  |  |  |
Bermuda (Successor)/ U.K. (Predecessor) statutory income tax rate | 19.00% | 0.00% | 19.00% | 19.00%
Non-U.K. (Predecessor) taxes | 1.00% | 0.00% | (2.80%) | (280.90%)
Resolution of prior year items | (0.40%) | 387.90% | 1.80% | 12.30%
Bargain purchase gain | 0.00% | 0.00% | 0.00% | 189.70%
Valuation allowance | (1.80%) | (119.50%) | (1.50%) | (145.10%)
Switzerland Tax Reform | 0.00% | (188.30%) | 0.00% | 0.00%
Debt repurchases | 0.00% | 0.00% | 0.00% | 48.70%
Asset impairments | (3.20%) | 0.00% | (12.50%) | (31.00%)
U.S. tax reform and U.S. CARES Act | 0.00% | 0.00% | 2.40% | (21.60%)
Other | (15.00%) | 0.00% | (1.30%) | 7.60%
Effective income tax rate | (0.40%) | 456.10% | 5.10% | (201.30%)
Non-Bermuda (Successor) taxes | 0.00% | (376.00%) | 0.00% | 0.00%

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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.4) -URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(2)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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- Definition Percentage 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 changes in the valuation allowance for deferred tax assets. + References Reference 1: 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.Fact.4) -URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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