XML 49 R34.htm IDEA: XBRL DOCUMENT v3.25.1

Business Combinations, Goodwill and Other Intangible Assets Business Combinations, Earn-out Payments (Details) $ in Millions	Mar. 31, 2025 USD ($) acquisition	Dec. 31, 2024 USD ($) acquisition
Summary of Earn-out Payments [Line Items]
Number Of Acquisitions Subject To Potential Earn Out Payments Provisions | acquisition	12	13
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, High, Value	$ 84.5	$ 108.0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Summary of Earn-out Payments [Line Items]
Business Combination, Contingent Consideration, Liability, Current	16.2	12.0
Business Combination, Contingent Consideration, Liability, Noncurrent	$ 21.3	$ 23.8

X

- Definition

Business Combination, Contingent Consideration Arrangements, Range of Outcomes, High, Value

+ References

No definition available.

+ Details

Name:	jll_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesHighValue
Namespace Prefix:	jll_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The number of acquisitions subject to potential earn-out payment provisions.

+ References

No definition available.

+ Details

Name:	jll_NumberOfAcquisitionsSubjectToPotentialEarnOutPaymentsProvisions
Namespace Prefix:	jll_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

[Line Items] for Summary of Earn-out Payments [Table]

+ References

No definition available.

+ Details

Name:	jll_SummaryofEarnoutPaymentsLineItems
Namespace Prefix:	jll_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 805
-SubTopic 30
-Name Accounting Standards Codification
-Section 35
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479613/805-30-35-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479668/805-30-25-6

+ Details

Name:	us-gaap_BusinessCombinationContingentConsiderationLiabilityCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled beyond one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 805
-SubTopic 30
-Name Accounting Standards Codification
-Section 35
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479613/805-30-35-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479668/805-30-25-6

+ Details

Name:	us-gaap_BusinessCombinationContingentConsiderationLiabilityNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: