| Label | Element | Value |
|---|---|---|
| APIC, Share-Based Payment Arrangement, Increase for Cost Recognition | us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | $ 1,000,000 |
| APIC, Share-Based Payment Arrangement, Increase for Cost Recognition | us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | 36,000,000 |
| Members' Equity, Assumption Of Contingent Consideration Liability, Reorganization Transactions | jmke_MembersEquityAssumptionOfContingentConsiderationLiabilityReorganizationTransactions | 225,000,000 |
| Members' Equity, Effect of the Reorganization Transactions | jmke_MembersEquityEffectOfTheReorganizationTransactions | (5,643,000,000) |
| Stock Issued During Period, Reclassification And Reorganization Transactions, Values | jmke_StockIssuedDuringPeriodReclassificationAndReorganizationTransactionsValues | 0 |
| Tax Receivable Agreement Liability, Impact On Option Exchange | jmke_TaxReceivableAgreementLiabilityImpactOnOptionExchange | 1,085,000,000 |
| Stock Issued During Period, Value, New Issues | us-gaap_StockIssuedDuringPeriodValueNewIssues | 301,000,000 |
| Stock Issued During Period, Value, Conversion of Units | us-gaap_StockIssuedDuringPeriodValueConversionOfUnits | 0 |
| Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders | us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders | 12,000,000 |
| Retained Earnings [Member] | ||
| Net Income (Loss), Including Portion Attributable to Noncontrolling Interest | us-gaap_ProfitLoss | (11,000,000) |
| Noncontrolling Interest [Member] | ||
| APIC, Share-Based Payment Arrangement, Increase for Cost Recognition | us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | 10,000,000 |
| Stock Issued During Period, Reclassification And Reorganization Transactions, Values | jmke_StockIssuedDuringPeriodReclassificationAndReorganizationTransactionsValues | 1,575,000,000 |
| Stock Issued During Period, Value, New Issues | us-gaap_StockIssuedDuringPeriodValueNewIssues | 12,000,000 |
| Net Income (Loss), Including Portion Attributable to Noncontrolling Interest | us-gaap_ProfitLoss | (2,000,000) |
| Stock Issued During Period, Value, Conversion of Units | us-gaap_StockIssuedDuringPeriodValueConversionOfUnits | (11,000,000) |
| Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders | us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders | 12,000,000 |
| Additional Paid-in Capital [Member] | ||
| APIC, Share-Based Payment Arrangement, Increase for Cost Recognition | us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | 26,000,000 |
| Stock Issued During Period, Reclassification And Reorganization Transactions, Values | jmke_StockIssuedDuringPeriodReclassificationAndReorganizationTransactionsValues | 4,068,000,000 |
| Tax Receivable Agreement Liability, Impact On Option Exchange | jmke_TaxReceivableAgreementLiabilityImpactOnOptionExchange | 1,085,000,000 |
| Stock Issued During Period, Value, New Issues | us-gaap_StockIssuedDuringPeriodValueNewIssues | 289,000,000 |
| Stock Issued During Period, Value, Conversion of Units | us-gaap_StockIssuedDuringPeriodValueConversionOfUnits | $ 11,000,000 |
| Common Class B [Member] | Common Stock [Member] | ||
| Stock Issued During Period, Reclassification And Reorganization Transactions, Shares | jmke_StockIssuedDuringPeriodReclassificationAndReorganizationTransactionsShares | 85,000,000 |
| Stock Issued During Period, Shares, Conversion of Units | us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits | (1,000,000) |
| Common Class A [Member] | Common Stock [Member] | ||
| Stock Issued During Period, Reclassification And Reorganization Transactions, Shares | jmke_StockIssuedDuringPeriodReclassificationAndReorganizationTransactionsShares | 219,000,000 |
| Stock Issued During Period, Shares, New Issues | us-gaap_StockIssuedDuringPeriodSharesNewIssues | 13,000,000 |
| Stock Issued During Period, Shares, Conversion of Units | us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits | 1,000,000 |
| X | ||||||||||
- Definition Members' Equity, Assumption Of Contingent Consideration Liability, Reorganization Transactions No definition available.
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| X | ||||||||||
- Definition Members' Equity, Effect of the Reorganization Transactions No definition available.
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| X | ||||||||||
- Definition Stock Issued During Period, Reclassification And Reorganization Transactions, Shares No definition available.
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| X | ||||||||||
- Definition Stock Issued During Period, Reclassification And Reorganization Transactions, Values No definition available.
|
| X | ||||||||||
- Definition Tax Receivable Agreement Liability, Impact On Option Exchange No definition available.
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| X | ||||||||||
- Definition Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The number of shares issued during the period upon the conversion of units. An example of a convertible unit is an umbrella partnership real estate investment trust unit (UPREIT unit). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Number of new stock issued during the period. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Value of stock issued during the period upon the conversion of units. An example of a convertible unit is an umbrella partnership real estate investment trust unit (UPREIT unit). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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