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Consolidated Statement of Changes in Equity Consolidated Statement of Changes in Equity (Parenthetical)	3 Months Ended
	Mar. 31, 2018 $ / shares
Consolidated Statement of Change in Equity (Parenthetical) [Abstract]
Common Stock, Dividends, Per Share, Declared	$ 0.00

X

- Definition

Consolidated Statement of Change in Equity (Parenthetical) [Abstract]

+ References

No definition available.

+ Details

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Namespace Prefix:	jll_
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X

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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