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Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) | 2 Months Ended | 4 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2021 | Oct. 19, 2021 | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2019
Income Tax Disclosure [Abstract] |  |  |  |  |
Income tax at U.S. Federal statutory rate | 21.00% |  | 25.00% | 25.00% |
State and local taxes, net of federal impact | 2.00% |  |  |  |
Income tax at U.K. statutory rate |  | 19.00% | 19.00% | 19.00% | 19.00%
Subpart F & GILTI |  | 0 | (0.01) | (0.02) | (0.04)
Foreign taxes, including U.S. | 0.00% | 1.00% | (1.00%) | 1.00% | 3.00%
Transaction costs |  | (3.00%) | 0.00% | 0.00% | 0.00%
Change in valuation allowance | 3.00% | (2.00%) | 4.00% | (8.00%) | 1.00%
Unrecognized tax benefits |  | (1.00%) | (1.00%) | 11.00% | 0.00%
Nondeductible interest expense |  | (7.00%) | (14.00%) | (17.00%) | (14.00%)
Stock-based compensation expense | (4.00%) | (2.00%) | 0.00% | 0.00% | 0.00%
Warrant liability change in fair value | 1.00% |  |  |  |
Other | 0.00% | 0.00% | 0.00% | 0.00% | (2.00%)
Total effective income tax rate | 23.00% | 5.00% | 4.00% | 4.00% | 3.00%

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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: 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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