XML 73 R43.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Organization (Details) $ in Millions, ft² in Billions | Dec. 31, 2024 USD ($) ft² employee
--- | ---
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Number of employees | 112,000
Number of employees whose costs are reimbursed by clients | 53,900
Portfolio of property and corporate facility management (in square feet) | ft² | 5.3
Assets under management by LaSalle Investment Management | $ | $ 88,800.0

X
- Definition Number of persons employed by the Entity + References No definition available. + Details
Name: | dei_EntityNumberOfEmployees
Namespace Prefix: | dei_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of employees whose costs are reimbursed by clients. + References No definition available. + Details
Name: | jll_NumberOfEmployeesWhoseCostsAreReimbursedByClients
Namespace Prefix: | jll_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Area of a real estate property. + References No definition available. + Details
Name: | us-gaap_AreaOfRealEstateProperty
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition The carrying amount of assets an investment adviser manages on behalf of investors. + References No definition available. + Details
Name: | us-gaap_AssetsUnderManagementCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration