XML 59 R32.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Revenue Recognition (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Revenue Recognition [Abstract] |  |  |  |
Gross revenue and expenses for management services | $ 258.2 | $ 191.7 | $ 477.5 | $ 366.1

X
- Definition Reimbursement for contract vendor and subcontractor costs that is deducted from gross revenue. + References No definition available. + Details
Name: | jll_GrossRevenueAndExpensesForManagementServices
Namespace Prefix: | jll_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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