XML 118 R52.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2

Business Segments, Currencies (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Schedule of Significant Currencies [Line Items]
Document Period End Date									Dec. 31, 2019
Percentage of assets from countries having restrictions									5.00%	6.00%
Revenues	$ 5,400.5	$ 4,495.6	$ 4,266.5	$ 3,820.6	$ 4,889.7	$ 3,969.8	$ 3,903.7	$ 3,555.2	$ 17,983.2	$ 16,318.4	$ 14,453.2
Total Assets	13,672.6				10,025.5				13,672.6	10,025.5
United States dollar [Member]
Schedule of Significant Currencies [Line Items]
Revenues									10,054.9	8,523.8	7,572.1
Total Assets	9,015.7				5,866.4				9,015.7	5,866.4
Euro [Member]
Schedule of Significant Currencies [Line Items]
Revenues									1,507.7	1,527.1	1,244.8
Total Assets	984.7				932.2				984.7	932.2
British pound [Member]
Schedule of Significant Currencies [Line Items]
Revenues									1,514.8	1,526.3	1,447.3
Total Assets	1,320.0				1,187.3				1,320.0	1,187.3
Australian dollar [Member]
Schedule of Significant Currencies [Line Items]
Revenues									924.5	916.7	909.7
Total Assets	323.3				291.6				323.3	291.6
Indian rupee [Member]
Schedule of Significant Currencies [Line Items]
Revenues									651.8	580.4	516.2
Total Assets	372.4				317.5				372.4	317.5
Chinese yuan [Member]
Schedule of Significant Currencies [Line Items]
Revenues									505.9	505.5	439.7
Total Assets	207.2				190.4				207.2	190.4
Hong Kong dollar [Member]
Schedule of Significant Currencies [Line Items]
Revenues									533.8	487.2	450.0
Total Assets	218.5				187.1				218.5	187.1
Singapore dollar [Member]
Schedule of Significant Currencies [Line Items]
Revenues									309.2	458.7	268.0
Total Assets	217.3				236.5				217.3	236.5
Canada, Dollars
Schedule of Significant Currencies [Line Items]
Revenues									435.5	390.5	333.4
Total Assets	194.3				172.0				194.3	172.0
Japanese yen [Member]
Schedule of Significant Currencies [Line Items]
Revenues									349.4	285.2	238.2
Total Assets	146.8				96.4				146.8	96.4
Other currencies [Member]
Schedule of Significant Currencies [Line Items]
Revenues									1,195.7	1,117.0	$ 1,033.8
Total Assets	$ 672.4				$ 548.1				$ 672.4	$ 548.1

X

- Definition

The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD.

+ References

No definition available.

+ Details

Name:	dei_DocumentPeriodEndDate
Namespace Prefix:	dei_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of assets from countries having restrictions that limit or prevent the transfer of funds to other countries or the exchange of the local currency to other currencies

+ References

No definition available.

+ Details

Name:	jll_PercentageOfAssetsFromCountriesHavingRestrictions
Namespace Prefix:	jll_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

X

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

+ Details

Name:	us-gaap_Assets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(1))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

+ Details

Name:	us-gaap_Revenues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	jll_SignificantCurrenciesTypeAxis=currency_USD
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	jll_SignificantCurrenciesTypeAxis=currency_EUR
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	jll_SignificantCurrenciesTypeAxis=currency_GBP
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	jll_SignificantCurrenciesTypeAxis=currency_AUD
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	jll_SignificantCurrenciesTypeAxis=currency_INR
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	jll_SignificantCurrenciesTypeAxis=currency_CNY
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	jll_SignificantCurrenciesTypeAxis=currency_HKD
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	jll_SignificantCurrenciesTypeAxis=currency_SGD
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	jll_SignificantCurrenciesTypeAxis=currency_CAD
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	jll_SignificantCurrenciesTypeAxis=currency_JPY
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	jll_SignificantCurrenciesTypeAxis=jll_OtherCurrenciesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: