Jones Lang LaSalle (JLL) 10-Q 7 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015	4-May-15
Document and Entity Information [Abstract]
Entity Registrant Name	JONES LANG LASALLE INC
Entity Central Index Key	1037976
Current Fiscal Year End Date	-19
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		44,862,646
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	31-Mar-15
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes

Consolidated_Balance_Sheets_un

Consolidated Balance Sheets (unaudited) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$198,491	$250,413
Trade receivables, net of allowances of $22,729 and $17,861	1,229,545	1,375,035
Notes and other receivables	201,614	181,377
Warehouse receivables	178,954	83,312
Prepaid expenses	84,227	64,963
Deferred tax assets, net	133,641	135,251
Other	34,665	27,825
Total current assets	2,061,137	2,118,176
Property and equipment, net of accumulated depreciation of $423,588 and $418,332	353,818	368,361
Goodwill, with indefinite useful lives	1,870,534	1,907,924
Identified intangibles, net of accumulated amortization of $124,915 and $124,920	36,014	38,841
Investments in real estate ventures, including $130,665 and $113,602 at fair value	304,770	297,142
Long-term receivables	83,941	85,749
Deferred tax assets, net	98,539	90,897
Deferred Compensation Plan Assets	124,062	111,234
Other	63,603	57,012
Total assets	4,996,418	5,075,336
Current liabilities:
Accounts payable and accrued liabilities	548,060	630,037
Accrued compensation	628,592	990,678
Short-term borrowings	21,215	19,623
Deferred tax liabilities, net	16,554	16,554
Deferred income	96,915	104,565
Deferred business acquisition obligations	45,802	49,259
Warehouse facility	178,954	83,312
Minority Shareholder Redemption Liability, Current	16,333	11,158
Other	143,175	141,825
Total current liabilities	1,695,600	2,047,011
Noncurrent liabilities:
Credit facility	335,000	0
Long-term senior notes	275,000	275,000
Deferred tax liabilities, net	17,232	17,082
Deferred compensation	137,100	125,857
Deferred business acquisition obligations	67,135	68,848
Other	112,475	118,969
Total liabilities	2,639,542	2,652,767
Redeemable Noncontrolling Interest	9,185	13,449
Company shareholders' equity:
Common stock, $.01 par value per share, 100,000,000 shares authorized; 44,859,342 and 44,828,779 shares issued and outstanding	449	448
Additional paid-in capital	967,981	961,850
Retained earnings	1,673,039	1,631,145
Shares held in trust	-6,329	-6,407
Accumulated other comprehensive loss	-308,460	-200,239
Total Company shareholders' equity	2,326,680	2,386,797
Noncontrolling interest	21,011	22,323
Total equity	2,347,691	2,409,120
Total liabilities and equity	$4,996,418	$5,075,336

Consolidated_Balance_Sheets_un1

Consolidated Balance Sheets (unaudited) (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, except Share data, unless otherwise specified
Assets
Trade receivables, allowances	$22,729	$17,861
Property and equipment, accumulated depreciation	423,588	418,332
Identified intangibles, with finite useful lives, accumulated amortization	124,915	124,920
Investments in real estate ventures accounted for at fair value	$130,665	$113,602
Company shareholders' equity
Common stock, par value (in dollars per share)	$0.01	$0.01
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	44,859,342	44,828,779
Common stock, shares outstanding (in shares)	44,859,342	44,828,779

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (unaudited) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Revenue	$1,203,511	$1,037,442
Operating expenses:
Compensation and benefits	737,917	637,340
Operating, administrative and other	387,197	356,999
Depreciation and amortization	24,923	22,411
Restructuring and acquisition charges	816	35,958
Total operating expenses	1,150,853	1,052,708
Operating income (loss)	52,658	-15,266
Interest expense, net of interest income	-6,038	-6,637
Equity in earnings from real estate ventures	11,384	8,903
Income (loss) before income taxes and noncontrolling interest	58,004	-13,000
Provision for (benefit from) income taxes	14,733	-29,145
Net income	43,271	16,145
Net income attributable to noncontrolling interest	1,377	243
Net income attributable to the Company	41,894	15,902
Net income attributable to common shareholders	41,894	15,902
Basic earnings per common share (in dollars per share)	$0.93	$0.36
Basic weighted average shares outstanding (in shares)	44,843,629	44,513,813
Diluted earnings per common share (in dollars per share)	$0.92	$0.35
Diluted weighted average shares outstanding (in shares)	45,373,911	45,201,708
Other comprehensive income:
Net income attributable to the Company	41,894	15,902
Change in pension liabilities, net of tax	-852	0
Foreign currency translation adjustments	-109,073	13,818
Comprehensive income attributable to the Company	($66,327)	$29,720

Consolidated_Statement_of_Chan

Consolidated Statement of Changes in Equity (unaudited) (USD $)	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Shares Held in Trust [Member]	Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]
In Thousands, except Share data, unless otherwise specified
Balances at Dec. 31, 2014	$2,409,120	$448	$961,850	$1,631,145	($6,407)	($200,239)	$22,323
Balances (in shares) at Dec. 31, 2014		44,828,779
Increase (decrease) in shareholders' equity [Roll Forward]
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	43,469			41,894			1,575
Shares issued under stock compensation programs (in shares)		42,364
Shares issued under stock compensation programs	55	1	54	0			0
Shares repurchased for payment of taxes on stock awards (in shares)		-11,801
Shares repurchased for payment of taxes on stock awards	-1,915		-1,915
Tax adjustments due to vestings and exercises	1,106		1,106
Amortization of stock compensation	6,709		6,709
Shares held in trust	78				78
Change in pension liabilities, net of tax	-852					-852
Foreign currency translation adjustments	-109,073					-109,073	0
Distributions to noncontrolling interest	-2,887						-2,887
Noncontrolling Interest, Change in Redemption Value	177		177
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest	198
Balances at Mar. 31, 2015	$2,347,691	$449	$967,981	$1,673,039	($6,329)	($308,460)	$21,011
Balances (in shares) at Mar. 31, 2015		44,859,342

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Cash flows used for operating activities:
Net income	$43,271	$16,145
Reconciliation of net income to net cash provided by (used in) operating activities:
Depreciation and amortization	24,923	22,411
Equity in earnings from real estate ventures	-11,384	-8,903
Gain on the sale of assets	-1,188	0
Distributions of earnings from real estate ventures	1,683	489
Provision for loss on receivables and other assets	8,032	5,303
Amortization of deferred compensation	6,709	6,233
Accretion of interest on deferred business acquisition obligations	979	1,134
Amortization of debt issuance costs	945	907
Change in:
Receivables	63,390	85,668
Prepaid expenses and other assets	-38,830	-24,654
Deferred tax assets, net	-5,881	21,683
Excess tax benefit from share-based payment arrangements	-1,106	-1,942
Accounts payable, accrued liabilities and accrued compensation	-427,313	-387,693
Net cash used in operating activities	-335,770	-263,219
Cash flows used for investing activities:
Net capital additions - property and equipment	-19,164	-33,264
Proceeds from Sales of Assets, Investing Activities	6,813	0
Business acquisitions	-3,668	-9,173
Capital contributions to real estate ventures	-19,176	-4,145
Distributions of capital from real estate ventures	14,141	7,285
Net cash used in investing activities	-21,054	-39,297
Cash flows from financing activities:
Proceeds from borrowings under credit facilities	631,000	610,000
Repayments of borrowings under credit facilities	-294,862	-329,703
Payment of deferred business acquisition obligations	-3,949	-1,352
Acquisition of redeemable noncontrolling interest	-2,655	0
Debt issuance costs	-7,150	0
Shares repurchased for payment of employee taxes on stock awards	-1,915	-4,101
Excess tax adjustment from share-based payment arrangements	1,106	1,942
Common stock issued under option and stock purchase programs	55	133
Capital lease payments	-1,013	-1,069
Other loan (payments) proceeds	-4,338	14,297
Noncontrolling interest distributions, net	-2,898	0
Net cash provided by financing activities	313,381	290,147
Effect of Exchange Rate on Cash and Cash Equivalents	-8,479	-209
Net decrease in cash and cash equivalents	-51,922	-12,578
Cash and cash equivalents, beginning of period	250,413	152,726
Cash and cash equivalents, end of period	198,491	140,148
Cash paid during the period for:
Interest	1,400	1,030
Income taxes, net of refunds	34,909	18,314
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	9,279	0
Capital Lease Obligations Incurred	2,622	7,570
Business Combinations, Guaranteed Deferred Acquisition Obligation	$451	$0

Notes_to_Consolidated_Financia

Notes to Consolidated Financial Statements	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Notes to Consolidated Financial Statements	JONES LANG LASALLE INCORPORATED
	Notes to Consolidated Financial Statements (Unaudited)
	Readers of this quarterly report should refer to the audited financial statements of Jones Lang LaSalle Incorporated ("JLL," which may also be referred to as "the Company" or as "the Firm," "we," "us" or "our") for the year ended December 31, 2014, which are included in our 2014 Annual Report on Form 10-K, filed with the United States Securities and Exchange Commission ("SEC") and also available on our website (www.jll.com), since we have omitted from this quarterly report certain footnote disclosures which would substantially duplicate those contained in such audited financial statements. You should also refer to the "Summary of Critical Accounting Policies and Estimates" section within Item 7 and to Note 2, Summary of Significant Accounting Policies, in the Notes to Consolidated Financial Statements in our 2014 Annual Report on Form 10-K for further discussion of our significant accounting policies and estimates.

Interim_Information

Interim Information	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Interim Information
	-1	Interim Information
	Our Consolidated Financial Statements as of March 31, 2015, and for the three months ended March 31, 2015 and 2014, are unaudited; however, in the opinion of management, all adjustments (consisting solely of normal recurring adjustments) necessary for a fair presentation of the Consolidated Financial Statements for these interim periods have been included. Certain prior year amounts have been reclassified to conform to the current year presentation.
	Historically, our quarterly revenue and profits have tended to increase from quarter to quarter as the year progresses. This is the result of a general focus in the real estate industry on completing transactions by calendar-year-end, while we recognize certain expenses evenly throughout the year. Our LaSalle Investment Management ("LaSalle") segment generally earns investment-generated performance fees on clients' real estate investment returns and co-investment equity gains when assets are sold, the timing of which is geared toward the benefit of our clients. Within our Real Estate Services ("RES") segments, revenue from capital markets activities relates to the size and timing of our clients' transactions and can fluctuate significantly from period to period.
	A significant portion of our compensation and benefits expense is from incentive compensation plans, which we generally accrue throughout the year based on progress toward annual performance targets. This process can result in significant fluctuations in quarterly compensation and benefits expense from period to period. Non-variable operating expenses, which we recognize when incurred during the year, are relatively constant on a quarterly basis.
	We provide for the effects of income taxes on interim financial statements based on our estimate of the effective tax rate for the full year, which is based on forecasted income by country and expected enacted tax rates. Changes in the geographic mix of income can impact our estimated effective tax rate.
	As a result of the items mentioned above, the results for the three months ended March 31, 2015 and 2014 are not indicative of what our results will be for the full fiscal year.

New_Accounting_Standards

New Accounting Standards	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
New Accounting Standards
	-2	New Accounting Standards
	On May 28, 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, "Revenue from Contracts with Customers," which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in U.S. generally accepted accounting principles ("U.S. GAAP") when it becomes effective. Currently, the new standard is effective for the Company on January 1, 2017, and early adoption is not permitted. The standard permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the effect that ASU 2014-09 will have on its consolidated financial statements and related disclosures. The Company has not yet selected a transition method nor has it determined the effect of the standard on its ongoing financial reporting.
	In February 2015, the FASB issued ASU No. 2015-02, "Amendments to the Consolidation Analysis," which improves targeted areas of the consolidation guidance and reduces the number of consolidation models. The amendments in the ASU are effective for annual and interim periods in fiscal years beginning after December 15, 2015, with early adoption permitted. The Company is currently evaluating the effect the guidance will have on its consolidated financial statements.
	In April 2015, the FASB issued ASU No. 2015-03, "Interest - Imputation of Interest," which simplifies the presentation of debt issuance costs. The amendments in the ASU are effective for annual and interim periods in fiscal years beginning after December 15, 2015, with early adoption permitted. The Company does not believe implementation of the guidance will have a material effect on its consolidated financial statements.

Revenue_Recognition

Revenue Recognition	3 Months Ended
	Mar. 31, 2015
Revenue Recognition [Abstract]
Revenue Recognition
	-3	Revenue Recognition
	We earn revenue from the following principal sources:
	•	Transaction commissions;
	•	Advisory and management fees;
	•	Incentive fees;
	•	Project and development management fees; and
	•	Construction management fees.
	We recognize transaction commissions related to leasing services and capital markets services as revenue when we provide the related services unless future contingencies exist. Advisory and management fees related to property and facility management services, valuation services, corporate property services, consulting services and investment management are recognized in the period in which we perform the related services. We recognize incentive fees in the period earned, based on the performance of funds' investments, contractual benchmarks and other contractual formulas. If future contingencies exist, we defer recognition of the related revenue until the respective contingencies have been satisfied.
	We recognize project and development management and construction management fees by applying the percentage of completion method of accounting. The efforts expended method is used to determine the extent of progress towards completion for project and development management fees, and the costs incurred to total estimated costs method is used for construction management fees.
	Certain construction management fees, which are gross construction services revenue reported net of subcontract costs, were $0.6 million and $1.2 million for the three months ended March 31, 2015 and 2014, respectively. Gross construction services revenue totaled $17.1 million and $27.5 million for the three months ended March 31, 2015 and 2014, respectively and subcontract costs totaled $16.5 million and $26.3 million for the three months ended March 31, 2015 and 2014, respectively.
	We included costs in excess of billings on uncompleted construction contracts of $2.7 million and $3.4 million in Trade receivables, and billings in excess of costs on uncompleted construction contracts of $7.1 million and $7.9 million, in Deferred income, as of March 31, 2015 and December 31, 2014, respectively.
	Gross and Net Accounting: We follow the guidance of FASB Accounting Standards Codification ("ASC") 605-45, "Principal and Agent Considerations," when accounting for reimbursements received from clients. In certain of our businesses, primarily those involving management services, our clients reimburse us for expenses incurred on their behalf. We base the treatment of reimbursable expenses for financial reporting purposes upon the fee structure of the underlying contract. Accordingly, we report a contract that provides for fixed fees, fully inclusive of all personnel and other recoverable expenses, on a gross basis. When accounting on a gross basis, our reported revenue comprises the entire amount billed to our client and our reported expenses include all costs associated with the client. Certain contractual arrangements in our project and development services, including fit-out business activities and our facility management services, tend to have characteristics that result in accounting on a gross basis. In Note 4, Business Segments, for client assignments in property and facility management and in project and development services that are accounted for on a gross basis, we identify the gross contract costs, including vendor and subcontract costs ("gross contract costs"), and present separately their impact on both revenue and operating expense in our RES segments. We exclude these gross contract costs from revenue and operating expenses in determining "fee revenue" and "fee-based operating expenses" in our segment presentation.
	We account for a contract on a net basis when the fee structure is comprised of at least two distinct elements, namely (1) a fixed management fee and (2) a separate component that allows for scheduled reimbursable personnel costs or other expenses to be billed directly to the client. When accounting on a net basis, we include the fixed management fee in reported revenue and net the reimbursement against expenses. We base this accounting on the following factors, which define us as an agent rather than a principal:
	•	The property owner or client, with ultimate approval rights relating to the employment and compensation of on-site personnel, and bearing all of the economic costs of such personnel, is determined to be the primary obligor in the arrangement;
	•	Reimbursement to JLL is generally completed simultaneously with payment of payroll or soon thereafter;
	•	The property owner is contractually obligated to fund all operating costs of the property from existing cash flow or direct funding from its building operating account and JLL bears little or no credit risk; and
	•	JLL generally earns no margin on the reimbursement aspect of the arrangement, obtaining reimbursement only for actual costs incurred.
	We account for the majority of our service contracts on a net basis. These net costs aggregated approximately $548.7 million and $478.9 million for the three months ended March 31, 2015 and 2014, respectively. The presentation of expenses pursuant to these arrangements under either a gross or net basis has no impact on operating income, net income or cash flows.
	Contracts accounted for on a gross basis resulted in certain costs reflected in revenue and operating expenses (gross contract costs) of $174.4 million and $159.6 million for the three months ended March 31, 2015 and 2014, respectively.

Business_Segments

Business Segments	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Business Segments
	-4	Business Segments
	We manage and report our operations as four business segments:
	The three geographic regions of RES including:
	(1) Americas,
	(2) Europe, Middle East and Africa ("EMEA"), and
	(3) Asia Pacific;
	and
	(4) LaSalle, which offers investment management services on a global basis.
	Each geographic region offers our full range of Real Estate Services, including agency leasing and tenant representation, capital markets and hotels, property management, facilities management, project and development management, energy management and sustainability, construction management, and advisory, consulting and valuation services. We consider "property management" to represent services provided to non-occupying property investors and "facilities management" to represent services provided to owner-occupiers. LaSalle provides investment management services to institutional investors and high-net-worth individuals.
	Operating income represents total revenue less direct and allocated indirect expenses. We allocate all indirect expenses to our segments, other than interest and income taxes, as nearly all expenses incurred benefit one or more of the segments. Allocated expenses primarily consist of corporate global overhead. We allocate these corporate global overhead expenses to the business segments based on the budgeted operating expenses of each segment.
	For segment reporting, we present revenue net of gross contract costs in our RES segments. Excluding these costs from revenue and expenses results in a "net" presentation of "fee revenue" and "fee-based operating expenses" that we believe more accurately reflects how we manage our expense base and operating margins. See Note 3 for additional information on our gross and net accounting policies. For segment reporting, we present Equity earnings from real estate ventures within total segment revenue, since the related activity is an integral part of LaSalle. Finally, our measure of segment results excludes Restructuring and acquisition charges.
	The Chief Operating Decision Maker of JLL measures the segment results net of gross contract costs, inclusive of Equity earnings from real estate ventures, and excluding Restructuring and acquisition charges. We define the Chief Operating Decision Maker collectively as our Global Executive Board, which is comprised of our Global Chief Executive Officer, Global Chief Financial Officer and the Chief Executive Officers of each of our four business segments.
	Summarized unaudited financial information by business segment for the three months ended March 31, 2015 and 2014 is as follows ($ in thousands):
		Three Months Ended			Three Months Ended
		March 31, 2015			March 31, 2014
	Americas - Real Estate Services
	Revenue	$	554,196		447,082
	Equity earnings	347			235
	Total segment revenue	554,543			447,317
	Gross contract costs	(52,959		)	(40,783	)
	Total segment fee revenue	501,584			406,534
	Operating expenses:
	Compensation, operating and administrative expenses	503,577			417,009
	Depreciation and amortization	15,551			13,311
	Total segment operating expenses	519,128			430,320
	Gross contract costs	(52,959		)	(40,783	)
	Total fee-based segment operating expenses	466,169			389,537
	Operating income	$	35,415		16,997
	EMEA - Real Estate Services
	Revenue	$	325,774		311,882
	Equity losses	(368		)	—
	Total segment revenue	325,406			311,882
	Gross contract costs	(71,862		)	(77,853	)
	Total segment fee revenue	253,544			234,029
	Operating expenses:
	Compensation, operating and administrative expenses	323,086			311,346
	Depreciation and amortization	5,226			5,444
	Total segment operating expenses	328,312			316,790
	Gross contract costs	(71,862		)	(77,853	)
	Total fee-based segment operating expenses	256,450			238,937
	Operating loss	$	(2,906	)	(4,908	)
	Continued: Summarized unaudited financial information by business segment for the three months ended March 31, 2015 and 2014 is as follows ($ in thousands):
		Three Months Ended			Three Months Ended
		March 31, 2015			March 31, 2014
	Asia Pacific - Real Estate Services
	Revenue	$	237,750		214,705
	Equity losses	(53		)	(82	)
	Total segment revenue	237,697			214,623
	Gross contract costs	(49,588		)	(40,967	)
	Total segment fee revenue	188,109			173,656
	Operating expenses:
	Compensation, operating and administrative expenses	229,622			210,305
	Depreciation and amortization	3,639			3,168
	Total segment operating expenses	233,261			213,473
	Gross contract costs	(49,588		)	(40,967	)
	Total fee-based segment operating expenses	183,673			172,506
	Operating income	$	4,436		1,150
	LaSalle
	Revenue	$	85,791		63,773
	Equity earnings	11,458			8,750
	Total segment revenue	97,249			72,523
	Operating expenses:
	Compensation, operating and administrative expenses	68,829			55,679
Depreciation and amortization	507			488
Total segment operating expenses	69,336			56,167
Operating income	$	27,913		16,356
Segment Reconciling Items
Total segment revenue	$	1,214,895		1,046,345
Reclassification of equity earnings	11,384			8,903
Total revenue	1,203,511			1,037,442
Total segment operating expenses before restructuring and acquisition charges	1,150,037			1,016,750
Operating income before restructuring and acquisition charges	53,474			20,692
Restructuring and acquisition charges	816			35,958
Operating income (loss)	$	52,658		(15,266	)

Business_Combinations_Goodwill

Business Combinations, Goodwill and Other Intangible Assets	3 Months Ended
	Mar. 31, 2015
BUSINESS COMBINATIONS, GOODWILL AND OTHER INTANGIBLE ASSETS [Abstract]
Business Combinations, Goodwill and Other Intangible Assets	(5) Business Combinations, Goodwill and Other Intangible Assets
	2015 Business Combinations Activity
	During the three months ended March 31, 2015, we completed two acquisitions, acquiring companies in Japan and Sweden, and we made the final payment for a Turkish acquisition that was completed in a previous year. Aggregate terms of these acquisitions included: (1) cash payments of $3.7 million, (2) consideration subject only to the passage of time of $0.5 million, and (3) earn-out consideration subject to provisions that will be paid upon certain performance conditions being met, which was recorded at the acquisition date fair value of $3.9 million.
	Our 2007 acquisition of an Indian real estate services company included provisions for the purchase of the minority ownership retained at completion. This obligation was reflected on our Consolidated Balance Sheet at March 31, 2015 as a $16.3 million Minority shareholder redemption liability. During the three months ended March 31, 2015, this estimated purchase obligation was increased by $5.4 million, with a corresponding adjustment to goodwill, to reflect our current estimate of the purchase price for the remaining shares held by the minority shareholder.
	During the three months ended March 31, 2015, we paid $3.9 million for deferred business acquisition and earn-out obligations for acquisitions completed in prior years. We also paid $2.7 million to purchase a portion of the redeemable noncontrolling interest related to our 2014 acquisition of Tenzing AB, a Swedish real estate services provider specializing in facilitating capital markets transactions.
	Earn-Out Payments
	At March 31, 2015, we had the potential to make earn-out payments on 15 acquisitions that are subject to the achievement of certain performance conditions. The maximum amount of the potential earn-out payments for these acquisitions was $43.6 million at March 31, 2015, for which we have accrued $26.8 million on our Consolidated Balance Sheet within Other current and long-term liabilities. Assuming the achievement of the applicable performance conditions, we anticipate that the majority of these earn-out payments will be paid over the next four years.
	Goodwill and Other Intangible Assets
	We had $1.9 billion of goodwill and unamortized intangibles at March 31, 2015. Significant portions of our goodwill and unamortized intangibles are denominated in currencies other than the U.S. dollar, which means that a portion of the movements in the reported book value of these balances is attributable to movements in foreign currency exchange rates. The tables below detail the foreign exchange impact on our goodwill and intangible balances. The $1.9 billion of goodwill and unamortized intangibles consists of: (1) goodwill of $1.87 billion with indefinite useful lives that is not amortized, (2) identifiable intangibles of $29.4 million that will be amortized over their remaining finite useful lives, and (3) $6.6 million of identifiable intangibles with indefinite useful lives that are not amortized.
	The following table details, by reporting segment, the current year movements in goodwill with indefinite useful lives ($ in millions):
		Real Estate Services
		Americas			EMEA		Asia		LaSalle		Consolidated
							Pacific
	Balance as of January 1, 2015	$	1,008.30		650.4		230.8		18.4		1,907.90
	Additions, net of adjustments	—			6.4		6		—		12.4
	Impact of exchange rate movements	(0.4		)	(44.2	)	(4.4	)	(0.8	)	(49.8	)
	Balance as of March 31, 2015	$	1,007.90		612.6		232.4		17.6		1,870.50
	The following table details, by reporting segment, the current year movements in the gross carrying amount and accumulated amortization of our identifiable intangibles ($ in millions):
		Real Estate Services
		Americas			EMEA		Asia		LaSalle		Consolidated
							Pacific
	Gross Book Value
	Balance as of January 1, 2015	$	103.4		43.8		9.5		7		163.7
	Additions	0.1			0.2		0.1		—		0.4
	Impact of exchange rate movements	—			(2.6	)	(0.3	)	(0.3	)	(3.2	)
	Balance as of March 31, 2015	$	103.5		41.4		9.3		6.7		160.9
	Accumulated Amortization
	Balance as of January 1, 2015	$	(84.9	)	(31.0	)	(8.9	)	(0.1	)	(124.9	)
	Amortization expense	(1.6		)	(0.3	)	(0.1	)	—		(2.0	)
	Impact of exchange rate movements	(0.1		)	1.8		0.3		—		2
	Balance as of March 31, 2015	$	(86.6	)	(29.5	)	(8.7	)	(0.1	)	(124.9	)
	Net book value as of March 31, 2015	$	16.9		11.9		0.6		6.6		36
	We amortize our identifiable intangible assets with finite lives on a straight-line basis over their useful lives. The remaining estimated future amortization expense by year for our identifiable intangible assets with finite useful lives at March 31, 2015, is as follows ($ in millions):
	2015 (9 months)	$	8.3
	2016	6.4
	2017	5.6
	2018	3.8
	2019	2.4
	2020	2.9
	Thereafter	—
	Total	$	29.4

Investments_in_Real_Estate_Ven

Investments in Real Estate Ventures	3 Months Ended
	Mar. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]
Investments in Real Estate Ventures
	-6	Investments in Real Estate Ventures
	As of March 31, 2015 and December 31, 2014, we had Investments in real estate ventures of $304.8 million and $297.1 million, respectively. We account for the majority of our investments in real estate ventures under the equity method of accounting, however, we report certain of our direct investments at fair value. Our investments are primarily co-investments in approximately 50 separate property or commingled funds for which we also have an advisory agreement. Our investment ownership percentages in these funds generally range from less than 1% to 15%.
	Approximately 50% of our $304.8 million balance in Investments in real estate ventures as of March 31, 2015 was attributable to investment vehicles which, utilizing our capital and outside capital primarily provided by institutional investors, invest in certain real estate ventures that own and operate real estate. Of this amount, the majority was placed with LaSalle Investment Company II ("LIC II"), in which we held an effective ownership interest of 48.78%.
	At March 31, 2015, LIC II had unfunded capital commitments to the underlying funds of $141.5 million and a $20.0 million revolving credit facility (the "LIC II Facility"), principally for working capital needs. LIC II's exposures to the liabilities and losses of the underlying real estate ventures in which it has invested is limited to existing capital contributions and remaining unfunded capital commitments. Considering our proportionate share of LIC II's commitments to underlying funds and our exposure to fund our proportionate share of the then outstanding balance on the LIC II facility, our maximum potential unfunded commitments to LIC II were $98.2 million as of March 31, 2015. We expect LIC II to draw down on our commitment over the next three to five years to satisfy its existing commitments to underlying real estate ventures.
	The following table summarizes the above discussion relative to LIC II as of March 31, 2015 ($ in millions):
	Our effective ownership interest in co-investment vehicle	48.78		%
	Our maximum potential unfunded commitments	$	98.2
	Our share of unfunded capital commitments to underlying funds	69
	Our maximum exposure, assuming facility is fully drawn	9.8
	Our share of exposure on outstanding borrowings	1
	Exclusive of our LIC II commitment structure, we have potential unfunded commitment obligations to other like investment vehicles or direct investments, the aggregate maximum of which is $80.9 million as of March 31, 2015.
	Our investments in real estate ventures include investments in entities classified as variable interest entities ("VIEs") that we analyze for potential consolidation. We had equity method investments, either directly or indirectly, of $7.6 million and $4.3 million at March 31, 2015 and December 31, 2014, respectively, in entities classified as VIEs. We evaluate each of these VIEs to determine whether we might have the power to direct the activities that most significantly impact the entity's economic performance. In certain circumstances, we have determined that we either did not have the power to direct the key activities, or shared power with other investors, lenders, or other actively-involved third parties. Additionally, our exposure to loss is limited to our investment in the VIEs. Therefore, we concluded that we would not be deemed to have a controlling financial interest in or be the primary beneficiary of these VIEs and therefore do not consolidate them in our Consolidated Financial Statements. In other circumstances, we have determined we are the primary beneficiary of certain other VIEs and accordingly, consolidate such entities. The assets of the consolidated VIEs are available only for the settlement of the obligations of the respective entities. The mortgage loans of the consolidated VIEs are non-recourse to JLL.
	Summarized balance sheets for our consolidated VIEs as of March 31, 2015 and December 31, 2014 are as follows ($ in millions):
		31-Mar-15				31-Dec-14
	Property and equipment, net	$	32.4			37.8
	Investment in real estate venture	5.1				5
	Other assets	3.1				3.5
	Total assets	$	40.6			46.3
	Mortgage loans payable, included in other long-term liabilities	$	24.9			29.3
	Total liabilities	24.9				29.3
	Members' equity	15.7				17
	Total liabilities and members' equity	$	40.6			46.3
	Summarized statements of operations for our consolidated VIEs for the three months ended March 31, 2015 and 2014 are as follows ($ in millions):
		Three Months				Three Months
		Ended				Ended
		March 31, 2015				March 31, 2014
	Revenue	$	1.1			0.5
	Gain on sale of investment	1.3				—
	Operating and other expenses	(0.9		)		(0.4	)
	Net income	$	1.5			0.1
	The members' equity and net income of the consolidated VIEs are allocated to the noncontrolling interest holders as Noncontrolling interest on our Consolidated Balance Sheets and as Net income attributable to noncontrolling interest in our Consolidated Statements of Comprehensive Income, respectively.
	Impairment
	We review our investments in real estate ventures on a quarterly basis, or as otherwise deemed necessary, for indications that we may not be able to recover the carrying value of our investments and whether such investments are other than temporarily impaired. Our assessments consider the existence of impairment indicators at the underlying real estate assets that comprise the majority of our investments. Such assessments, in regards to both the investment and underlying asset levels, are based on evaluations of regular updates to future cash flow models and on factors such as operational performance, market conditions, major tenancy matters, legal and environmental concerns, and our ability and intent to hold each investment. When events or changes in circumstances indicate that the carrying amount of one of our investments in real estate ventures may be other than temporarily impaired, we consider the likelihood of recoverability of the carrying amount of our investment as well as the estimated fair value and record an impairment charge as applicable. Impairment charges to write down the carrying value of the real estate assets underlying our investments, our proportionate share of which is recognized within Equity earnings from real estate ventures, are generally the result of completing discounted cash flow models that primarily rely upon Level 3 inputs to determine fair value. Impairment charges recorded within Equity earnings from real estate ventures aggregated to $3.6 million and $0.8 million for the three months ended March 31, 2015 and 2014, respectively.
	Fair Value
	We report our investments in certain real estate ventures at fair value. For such investments, we increase or decrease our investment each reporting period by the estimated change in fair value, which activity is reflected as gains or losses in our Consolidated Statements of Comprehensive Income within Equity earnings from real estate ventures. At March 31, 2015 and December 31, 2014, we had $130.7 million and $113.6 million, respectively, of investments that were reported at fair value. Fair value was generally estimated utilizing NAV per share (or its equivalent), a Level 3 input in the fair value hierarchy, as provided by our investees. Critical inputs to NAV estimates included valuations of the underlying real estate assets and borrowings, which incorporate investment-specific assumptions such as discount rates, capitalization rates, rental and expense growth rates and asset-specific market borrowing rates. No adjustments to NAV estimates provided by investees, including adjustments to contemplate any restrictions to the transferability of ownership interests embedded within investment agreements to which we are a party, were considered necessary based upon the following factors: (1) our understanding of the methodology utilized and inputs incorporated to estimate NAV at the investee level derived through LaSalle's role as advisor or manager of these ventures; (2) consideration of market demand for the specific types of real estate assets held by each venture; and (3) contemplation of real estate and capital markets conditions in the localities in which these ventures operate.
	The following table shows the roll forward of our investments in real estate ventures that are accounted for at fair value ($ in millions):
		2015			2014
	Fair value investments as of January 1,	$	113.6		78.9
	Investments	13.8			0.8
	Distributions	(1.2		)	—
	Net fair value gain	7.1			1.2
	Foreign currency translation adjustments, net	(2.6		)	(0.2	)
	Fair value investments as of March 31,	$	130.7		80.7

Stockbased_Compensation

Stock-based Compensation	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-based Compensation
	-7	Stock-Based Compensation
	Restricted Stock Unit Awards
	Along with cash-based salaries and performance-based annual cash incentive awards, restricted stock unit awards represent a crucial element of our compensation program.
	Restricted stock unit activity for the three months ended March 31, 2015 and 2014 is as follows:
		Shares		Weighted Average		Weighted Average
		(thousands)		Grant Date		Remaining
				Fair Value		Contractual Life
	Unvested at January 1, 2015	745.3		$	90.43
	Granted	121		159.91
	Vested	(41.8	)	80.61
	Forfeited	(4.1	)	89.1
	Unvested at March 31, 2015	820.4		$	101.18	2.35
	Unvested shares expected to vest	796.7		$	101.41	2.36
	Unvested at January 1, 2014	1,025.30		$	73.1
	Granted	135.3		118.42
	Vested	(129.5	)	58.18
	Forfeited	—		—
	Unvested at March 31, 2014	1,031.10		$	80.92	2.36
	Unvested shares expected to vest	997.1		$	81.1	2.37
	We determine the fair value of restricted stock units based on the closing market price of the Company's common stock on the grant date. As of March 31, 2015, we had $35.8 million of remaining unamortized deferred compensation related to unvested restricted stock units. We will recognize the remaining cost of unvested restricted stock units outstanding at March 31, 2015 over varying periods into 2020.
	Shares vested during the three months ended March 31, 2015 and 2014, had grant date fair values of $3.4 million and $7.5 million, respectively. Shares granted during the three months ended March 31, 2015 and 2014, had grant date fair values of $19.3 million and $16.0 million, respectively.
	Other Stock Compensation Programs
	We also have a stock-based compensation plan for our United Kingdom and Ireland-based employees, the Jones Lang LaSalle Savings Related Share Option Plan ("Save as You Earn" or "SAYE"). Under this plan, employees make an annual election to contribute to the plan to purchase stock at a 15% discount from the market price at the beginning of the plan's three and five year vesting periods. No options were issued during the three months ended March 31, 2015 and 2014. The fair value of options granted under the SAYE plan are amortized over their respective vesting periods. There were approximately 172,800 and 176,400 options outstanding under the SAYE plan at March 31, 2015 and December 31, 2014, respectively.

Retirement_Plans

Retirement Plans	3 Months Ended
	Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Retirement Plans
	-8	Retirement Plans
	We maintain four contributory defined benefit pension plans in the United Kingdom, Ireland and Holland to provide retirement benefits to eligible employees. It is our policy to fund the minimum annual contributions required by applicable regulations. We use a December 31 measurement date for our plans.
	Net periodic pension cost (income) consisted of the following ($ in millions):
		Three Months			Three Months
		Ended			Ended
		March 31, 2015			March 31, 2014
	Employer service cost - benefits earned during the period	$	1.3		1
	Interest cost on projected benefit obligation	3.6			4.1
	Expected return on plan assets	(5.2		)	(6.2	)
	Net amortization of deferrals	0.8			0.3
	Recognized actuarial loss	0.4			—
	Net periodic pension cost (income)	$	0.9		(0.8	)
	The expected return on plan assets, included in net periodic pension cost (income) during 2015 was based on forecasted long-term rates of return on the plan assets of each individual plan; expected returns range from 2.7% to 5.8%.
	For the three months ended March 31, 2015 and 2014, we made payments of $2.7 million and $3.5 million, respectively, to these plans. We expect to contribute an additional $9.3 million to these plans during the last nine months of 2015, for a total of $12.0 million in 2015. We contributed $14.6 million to these plans during the year ended December 31, 2014.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements
	-9	Fair Value Measurements
	ASC 820, "Fair Value Measurements and Disclosures," establishes a framework for measuring fair value highlighted by the following three-tier fair value hierarchy:
	•	Level 1. Observable inputs such as quoted prices for identical assets or liabilities in active markets;
	•	Level 2. Inputs, other than the quoted prices in active markets, that are observable either directly or indirectly; and
	•	Level 3. Unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions.
	There were no transfers among levels of valuations during either the three months ended March 31, 2015 or 2014.
	Financial Instruments
	Our financial instruments include Cash and cash equivalents, Trade receivables, Notes and other receivables, Warehouse receivables, Accounts payable, Short-term borrowings, Warehouse facility, Credit facility, Long-term senior notes and foreign currency exchange contracts. The estimated fair value of Cash and cash equivalents, Trade receivables, Notes and other receivables, Warehouse receivables, Accounts payable, and the Warehouse facility approximates their carrying amounts due to the short maturity of these instruments. The estimated fair value of our Credit facility and Short-term borrowings approximates their carrying value given the variable interest rate terms and market spreads.
	We estimate that the fair value of our Long-term senior notes was $290.2 million and $285.3 million at March 31, 2015 and December 31, 2014, respectively, using dealer quotes that are Level 2 inputs in the fair value hierarchy. The actual carrying value of our Long-term senior notes was $275.0 million at March 31, 2015 and December 31, 2014.
	We record Warehouse receivables at the lower of cost or fair value based on the committed purchase price. When applicable, we determine the fair value of Warehouse receivables based on readily observable Level 2 inputs.
	Recurring Fair Value Measurements
	The following table categorizes by level in the fair value hierarchy the estimated fair value at March 31, 2015 and December 31, 2014 of our assets and liabilities that are measured at fair value on a recurring basis ($ in millions):
			31-Mar-15			31-Dec-14
			Level 2		Level 3	Level 2		Level 3
	Assets
		Foreign currency forward contracts receivable	$	17.6	—	$	10.5	—
		Deferred compensation plan assets	124.1		—	111.2		—
		Investments in real estate ventures - fair value	—		130.7	—		113.6
	Total assets at fair value		$	141.7	130.7	$	121.7	113.6
	Liabilities
		Foreign currency forward contracts payable	$	24.5	—	$	18.2	—
		Deferred compensation plan liabilities	121.6		—	107.9		—
	Total liabilities at fair value		$	146.1	—	$	126.1	—
	Foreign Currency Forward Contracts
	We regularly use foreign currency forward contracts to manage our currency exchange rate risk related to intercompany lending and cash management practices. We determine the fair value of these contracts based on current market rates. The inputs for these valuations are Level 2 inputs in the fair value hierarchy. At March 31, 2015, these forward exchange contracts had a gross notional value of $2.00 billion ($1.03 billion on a net basis) and were recorded on our Consolidated Balance Sheet as a current asset of $17.6 million and a current liability of $24.5 million. At December 31, 2014, these forward exchange contracts had a gross notional value of $2.03 billion ($1.19 billion on a net basis) and were recorded on our Consolidated Balance Sheet as a current asset of $10.5 million and a current liability of $18.2 million.
	The revaluations of our foreign currency forward contracts resulted in a net loss of $6.9 million and net gain of $7.2 million for the three months ended March 31, 2015 and 2014, respectively. Gains and losses from the revaluation of these contracts are recognized as a component of Operating, administrative and other expense and are offset by the gains and losses recognized on the revaluation of intercompany loans and other foreign currency balances such that the impact to net income was not significant for either of the three months ended March 31, 2015 or 2014.
	The asset and liability positions recorded for our foreign currency forward contracts are based on the net payable or net receivable position with the financial institutions from which we purchase these contracts. The $17.6 million asset at March 31, 2015 was comprised of gross contracts with receivable positions of $18.2 million and payable positions of $0.6 million. The $24.5 million liability position at March 31, 2015 was comprised of gross contracts with receivable positions of $1.9 million and payable positions of $26.4 million. At December 31, 2014, the $10.5 million asset was comprised of gross contracts with receivable positions of $12.5 million and payable positions of $2.0 million. The $18.2 million liability position at December 31, 2014, was comprised of gross contracts with receivable positions of $1.1 million and payable positions of $19.3 million.
	Deferred Compensation Plan
	We maintain a deferred compensation plan for certain of our U.S. employees that allows them to defer portions of their compensation. We invest directly in insurance contracts which yield returns to fund these deferred compensation obligations. We recognize an asset for the amount that could be realized under these insurance contracts at the balance sheet date, and the deferred compensation obligation is adjusted to reflect the changes in the fair value of the amount owed to the employees. The inputs for this valuation are Level 2 inputs in the fair value hierarchy. This plan was recorded on our Consolidated Balance Sheet at March 31, 2015, as Deferred compensation plan assets of $124.1 million, long-term Deferred compensation liabilities of $121.6 million, and as a reduction of equity, Shares held in trust, of $6.3 million. This plan was recorded on our Consolidated Balance Sheet at December 31, 2014 as Deferred compensation plan assets of $111.2 million, long-term Deferred compensation liabilities of $107.9 million, and as a reduction of equity, Shares held in trust, of $6.4 million.
	Investments in Real Estate Ventures
	We report certain direct investments in real estate ventures at fair value. We had $130.7 million and $113.6 million at March 31, 2015 and December 31, 2014, respectively, of direct investments in real estate ventures that were reported at fair value. For these fair value investments in real estate ventures, we increase or decrease our investment each reporting period by the change in the fair value of these investments. These fair value adjustments are reflected as gains or losses in our Consolidated Statements of Comprehensive Income within Equity earnings from real estate ventures. As discussed in Note 6, Investments in Real Estate Ventures, we determine the fair value of these investments generally using NAV per share (or its equivalent), a Level 3 input in the fair value hierarchy, provided by investees.
	Non-Recurring Fair Value Measurements
	We review our investments in real estate ventures, except those investments otherwise reported at fair value, on a quarterly basis, or as otherwise deemed necessary, for indications of whether we may not be able to recover the carrying value of our investments and whether such investments are other than temporarily impaired. When the carrying amount of the investment is in excess of the estimated future undiscounted cash flows, we use a discounted cash flow approach or other acceptable method to determine the fair value of the investment in computing the amount of the impairment. Our determination of fair value primarily relies on Level 3 inputs. We did not recognize any impairment losses during either of the three months ended March 31, 2015 or 2014. See Note 6, Investments in Real Estate Ventures, for additional information.

Debt

Debt	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Debt
	-10	Debt
	Credit Facility
	On February 25, 2015, we amended and expanded our credit facility (the "Facility"), which resulted in: (1) an increase in our borrowing capacity from $1.2 billion to $2.0 billion; (2) an extension of the maturity date from October 4, 2018 to February 25, 2020; (3) increases in certain add-backs to Adjusted EBITDA (as defined in the Facility) for the calculation of the leverage ratio to provide additional operating flexibility; and (4) a range of pricing from LIBOR plus 1.00% to 2.05%, with pricing as of March 31, 2015 at LIBOR plus 1.00%. Under this new agreement, our leverage ratio cannot exceed 3.50 to 1, except immediately following a material acquisition, in which case, the leverage ratio maximum is 4.00 to 1 for up to four consecutive quarters. Other key terms and conditions of the Facility were unchanged as part of the current amendment and expansion.
	At March 31, 2015, we had outstanding borrowings under the Facility of $335.0 million and outstanding letters of credit of $23.0 million. At December 31, 2014, we had no outstanding borrowings under the Facility outstanding and outstanding letters of credit of $22.0 million. The average outstanding borrowings under the Facility were $158.0 million and $274.7 million during the three months ended March 31, 2015 and 2014, respectively.
	The effective interest rates on our Facility were 1.1% and 1.3% during the three months ended March 31, 2015 and 2014, respectively.
	We remained in compliance with all covenants under our Facility as of March 31, 2015, including a minimum cash interest coverage ratio of 3.00 to 1.
	Included in debt for the calculation of the leverage ratio is the present value of deferred business acquisition obligations and included in Adjusted EBITDA (as defined in the Facility) are, among other things, (1) an add-back for stock-based compensation expense, (2) the addition of the EBITDA of acquired companies earned prior to acquisition, and (3) add-backs for certain impairment and non-recurring charges. In addition, we are restricted from, among other things, incurring certain levels of indebtedness to lenders outside of the Facility and disposing of a significant portion of our assets. Lender approval or waiver is required for certain levels of cash acquisitions and co-investment.
	We will continue to use the Facility for working capital needs (including payment of accrued incentive compensation), co-investment activities, dividend payments, share repurchases, capital expenditures and business acquisitions.
	Short-Term Borrowings
	In addition to our Facility, we have the capacity to borrow up to an additional $42.2 million under local overdraft facilities. We had short-term borrowings (including capital lease obligations and local overdraft facilities) of $21.2 million and $19.6 million at March 31, 2015 and December 31, 2014, respectively, of which $14.3 million and $14.6 million at March 31, 2015 and December 31, 2014, respectively, was attributable to local overdraft facilities.
	Long-Term Senior Notes
	In November 2012, in an underwritten public offering, we issued $275.0 million of Long-term senior notes due November 2022 (the "Notes"). The Notes bear interest at an annual rate of 4.4%, subject to adjustment if a credit rating assigned to the Notes is downgraded below an investment grade rating (or subsequently upgraded). Interest is payable semi-annually on May 15 and November 15.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies
	11)	Commitments and Contingencies
	We are a defendant in various litigation matters arising in the ordinary course of business, some of which involve claims for damages that are substantial in amount. Many of these litigation matters are covered by insurance (including insurance provided through a consolidated captive insurance company as further discussed below), but they may nevertheless be subject to large deductibles and the amounts being claimed may exceed the available insurance. Although the ultimate liability for these matters cannot be determined, based upon information currently available, we believe the ultimate resolution of such claims and litigation will not have a material adverse effect on our financial position, results of operations or liquidity.
	In order to better manage our global insurance program and support our risk management efforts, we supplement our traditional insurance coverage for certain types of claims by using a wholly-owned captive insurance company. The level of risk retained by our captive insurance company, with respect to professional indemnity claims, is up to $2.5 million per claim, inclusive of the deductible. When a potential loss event occurs, management estimates the ultimate cost of the claim and accrues the related cost in Other current and long-term liabilities on our Consolidated Balance Sheets when probable and estimable. The following table shows the professional indemnity accrual activity and the related payments made during the three months ended March 31, 2015 and 2014 ($ in millions):
		Accrual Activity
	1-Jan-15	$	9.2
	New claims	2.2
	Prior year claims adjustments	(2.0		)
	Claims paid	—
	March 31, 2015	$	9.4
	1-Jan-14	$	6.2
	New claims	0.3
	Prior year claims adjustments	(0.2		)
	Claims paid	(0.6		)
	March 31, 2014	$	5.7

Restructuring_and_Acquisition_

Restructuring and Acquisition Charges	3 Months Ended
	Mar. 31, 2015
Restructuring and Related Activities [Abstract]
Restructuring and acquisition charges
	-12	Restructuring and Acquisition Charges
	There were $0.8 million of Restructuring and acquisition charges included in Net income during the three months ended March 31, 2015 consisting of (1) adjustments to severance accruals and (2) acquisition-related costs. For the three months ended March 31, 2014, we recognized $36.0 million of Restructuring and acquisition charges, of which $34.5 million was related to the write-off of an indemnification asset that arose from prior period acquisition activity. This write-off was offset by the recognition of a related previously unrecognized tax benefit of an equal amount in the provision for income taxes, and therefore had no impact on net income. The remaining $1.4 million of expense consisted of (1) severance, (2) lease exit fair value reserve adjustments, and (3) other acquisition and information technology integration costs.
	The following table shows the restructuring and acquisition accrual activity, exclusive of the $34.5 million indemnification asset write-off in 2014, and the related payments made during the three months ended March 31, 2015 and 2014 ($ in millions):
		Severance			Retention	Lease		Other		Total
					Bonuses	Exit		Acquisition
								Costs
	1-Jan-15	$	3		—	4.2		0.4		$	7.6
	Accruals	(0.1		)	—	—		0.9		0.8
	Payments made	(0.7		)	—	(1.1	)	(0.4	)	(2.2		)
	March 31, 2015	$	2.2		—	3.1		0.9		$	6.2
		Severance			Retention	Lease		Other		Total
					Bonuses	Exit		Acquisition
								Costs
	1-Jan-14	$	3.8		0.4	5.9		0.4		$	10.5
	Accruals	1.9			—	(1.4	)	0.9		1.4
	Payments made	(1.3		)	—	(1.3	)	(1.2	)	(3.8		)
	March 31, 2014	$	4.4		0.4	3.2		0.1		$	8.1
	We expect that the majority of accrued severance, accrued retention bonuses, and other accrued acquisition costs will be paid during the first half of 2015. Lease exit payments are dependent on the terms of various leases, which extend as far out as 2017.

Noncontrolling_Interest

Noncontrolling Interest	3 Months Ended
	Mar. 31, 2015
Noncontrolling Interest [Abstract]
Noncontrolling Interest Disclosure [Text Block]	(13) Noncontrolling Interest
	Changes in amounts attributable to noncontrolling interests are reflected in the Consolidated Statement of Changes in Equity. Changes in amounts attributable to redeemable noncontrolling interests are presented in the following table ($ in millions):
	Redeemable noncontrolling interests as of January 1, 2015	$	13.4
	Acquisition of redeemable noncontrolling interest (1)	(2.8		)
	Net loss	0.2
	Impact of exchange rate movements	(1.2		)
	Redeemable noncontrolling interests as of March 31, 2015	$	9.2
	(1) Activity reflects our purchase of a portion of the redeemable noncontrolling interest related to our 2014 acquisition of Tenzing AB.

Subsequent_Event

Subsequent Event	3 Months Ended
	Mar. 31, 2015
Subsequent Events [Abstract]
Subsequent Event	(14) Subsequent Events
	The Company announced on April 27, 2015, that its Board of Directors declared a semi-annual cash dividend of $0.27 per share of its common stock. The dividend payment will be made on June 15, 2015, to holders of record at the close of business on May 15, 2015. A dividend-equivalent in the same per share amount will also be paid simultaneously on outstanding but unvested shares of restricted stock units granted under the Company's Stock Award and Incentive Plan.

Revenue_Recognition_Policies

Revenue Recognition (Policies)	3 Months Ended
	Mar. 31, 2015
Revenue Recognition [Abstract]
Transactions commissions	We recognize transaction commissions related to leasing services and capital markets services as revenue when we provide the related services unless future contingencies exist.
Advisory and management fees	Advisory and management fees related to property and facility management services, valuation services, corporate property services, consulting services and investment management are recognized in the period in which we perform the related services.
Incentive fees	We recognize incentive fees in the period earned, based on the performance of funds' investments, contractual benchmarks and other contractual formulas. If future contingencies exist, we defer recognition of the related revenue until the respective contingencies have been satisfied.
Project and development management and construction management fees	We recognize project and development management and construction management fees by applying the percentage of completion method of accounting. The efforts expended method is used to determine the extent of progress towards completion for project and development management fees, and the costs incurred to total estimated costs method is used for construction management fees.
	Certain construction management fees, which are gross construction services revenue reported net of subcontract costs, were $0.6 million and $1.2 million for the three months ended March 31, 2015 and 2014, respectively. Gross construction services revenue totaled $17.1 million and $27.5 million for the three months ended March 31, 2015 and 2014, respectively and subcontract costs totaled $16.5 million and $26.3 million for the three months ended March 31, 2015 and 2014, respectively.
	We included costs in excess of billings on uncompleted construction contracts of $2.7 million and $3.4 million in Trade receivables, and billings in excess of costs on uncompleted construction contracts of $7.1 million and $7.9 million, in Deferred income, as of March 31, 2015 and December 31, 2014, respectively.
Gross and net accounting	Gross and Net Accounting: We follow the guidance of FASB Accounting Standards Codification ("ASC") 605-45, "Principal and Agent Considerations," when accounting for reimbursements received from clients. In certain of our businesses, primarily those involving management services, our clients reimburse us for expenses incurred on their behalf. We base the treatment of reimbursable expenses for financial reporting purposes upon the fee structure of the underlying contract. Accordingly, we report a contract that provides for fixed fees, fully inclusive of all personnel and other recoverable expenses, on a gross basis. When accounting on a gross basis, our reported revenue comprises the entire amount billed to our client and our reported expenses include all costs associated with the client. Certain contractual arrangements in our project and development services, including fit-out business activities and our facility management services, tend to have characteristics that result in accounting on a gross basis. In Note 4, Business Segments, for client assignments in property and facility management and in project and development services that are accounted for on a gross basis, we identify the gross contract costs, including vendor and subcontract costs ("gross contract costs"), and present separately their impact on both revenue and operating expense in our RES segments. We exclude these gross contract costs from revenue and operating expenses in determining "fee revenue" and "fee-based operating expenses" in our segment presentation.
	We account for a contract on a net basis when the fee structure is comprised of at least two distinct elements, namely (1) a fixed management fee and (2) a separate component that allows for scheduled reimbursable personnel costs or other expenses to be billed directly to the client. When accounting on a net basis, we include the fixed management fee in reported revenue and net the reimbursement against expenses. We base this accounting on the following factors, which define us as an agent rather than a principal:
	•	The property owner or client, with ultimate approval rights relating to the employment and compensation of on-site personnel, and bearing all of the economic costs of such personnel, is determined to be the primary obligor in the arrangement;
	•	Reimbursement to JLL is generally completed simultaneously with payment of payroll or soon thereafter;
	•	The property owner is contractually obligated to fund all operating costs of the property from existing cash flow or direct funding from its building operating account and JLL bears little or no credit risk; and
	•	JLL generally earns no margin on the reimbursement aspect of the arrangement, obtaining reimbursement only for actual costs incurred.
	We account for the majority of our service contracts on a net basis. These net costs aggregated approximately $548.7 million and $478.9 million for the three months ended March 31, 2015 and 2014, respectively. The presentation of expenses pursuant to these arrangements under either a gross or net basis has no impact on operating income, net income or cash flows.
	Contracts accounted for on a gross basis resulted in certain costs reflected in revenue and operating expenses (gross contract costs) of $174.4 million and $159.6 million for the three months ended March 31, 2015 and 2014, respectively.

Business_Segments_Tables

Business Segments (Tables)	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Summarized Unaudited Financial Information by Business Segments	Summarized unaudited financial information by business segment for the three months ended March 31, 2015 and 2014 is as follows ($ in thousands):
		Three Months Ended			Three Months Ended
		March 31, 2015			March 31, 2014
	Americas - Real Estate Services
	Revenue	$	554,196		447,082
	Equity earnings	347			235
	Total segment revenue	554,543			447,317
	Gross contract costs	(52,959		)	(40,783	)
	Total segment fee revenue	501,584			406,534
	Operating expenses:
	Compensation, operating and administrative expenses	503,577			417,009
	Depreciation and amortization	15,551			13,311
	Total segment operating expenses	519,128			430,320
	Gross contract costs	(52,959		)	(40,783	)
	Total fee-based segment operating expenses	466,169			389,537
	Operating income	$	35,415		16,997
	EMEA - Real Estate Services
	Revenue	$	325,774		311,882
	Equity losses	(368		)	—
	Total segment revenue	325,406			311,882
	Gross contract costs	(71,862		)	(77,853	)
	Total segment fee revenue	253,544			234,029
	Operating expenses:
	Compensation, operating and administrative expenses	323,086			311,346
	Depreciation and amortization	5,226			5,444
	Total segment operating expenses	328,312			316,790
	Gross contract costs	(71,862		)	(77,853	)
	Total fee-based segment operating expenses	256,450			238,937
	Operating loss	$	(2,906	)	(4,908	)
	Continued: Summarized unaudited financial information by business segment for the three months ended March 31, 2015 and 2014 is as follows ($ in thousands):
		Three Months Ended			Three Months Ended
		March 31, 2015			March 31, 2014
	Asia Pacific - Real Estate Services
	Revenue	$	237,750		214,705
	Equity losses	(53		)	(82	)
	Total segment revenue	237,697			214,623
	Gross contract costs	(49,588		)	(40,967	)
	Total segment fee revenue	188,109			173,656
	Operating expenses:
	Compensation, operating and administrative expenses	229,622			210,305
	Depreciation and amortization	3,639			3,168
	Total segment operating expenses	233,261			213,473
	Gross contract costs	(49,588		)	(40,967	)
	Total fee-based segment operating expenses	183,673			172,506
	Operating income	$	4,436		1,150
	LaSalle
	Revenue	$	85,791		63,773
	Equity earnings	11,458			8,750
	Total segment revenue	97,249			72,523
	Operating expenses:
	Compensation, operating and administrative expenses	68,829			55,679
	Depreciation and amortization	507			488
	Total segment operating expenses	69,336			56,167
	Operating income	$	27,913		16,356
	Segment Reconciling Items
	Total segment revenue	$	1,214,895		1,046,345
	Reclassification of equity earnings	11,384			8,903
	Total revenue	1,203,511			1,037,442
	Total segment operating expenses before restructuring and acquisition charges	1,150,037			1,016,750
	Operating income before restructuring and acquisition charges	53,474			20,692
	Restructuring and acquisition charges	816			35,958
	Operating income (loss)	$	52,658		(15,266	)

Business_Combinations_Goodwill1

Business Combinations, Goodwill and Other Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2015
BUSINESS COMBINATIONS, GOODWILL AND OTHER INTANGIBLE ASSETS [Abstract]
Movements in Goodwill by Reporting Segment	The following table details, by reporting segment, the current year movements in goodwill with indefinite useful lives ($ in millions):
		Real Estate Services
		Americas			EMEA		Asia		LaSalle		Consolidated
							Pacific
	Balance as of January 1, 2015	$	1,008.30		650.4		230.8		18.4		1,907.90
	Additions, net of adjustments	—			6.4		6		—		12.4
	Impact of exchange rate movements	(0.4		)	(44.2	)	(4.4	)	(0.8	)	(49.8	)
	Balance as of March 31, 2015	$	1,007.90		612.6		232.4		17.6		1,870.50
Movements in Gross Carrying Amount and Accumulated Amortization of Finite-Lived Intangible Assets	The following table details, by reporting segment, the current year movements in the gross carrying amount and accumulated amortization of our identifiable intangibles ($ in millions):
		Real Estate Services
		Americas			EMEA		Asia		LaSalle		Consolidated
							Pacific
	Gross Book Value
	Balance as of January 1, 2015	$	103.4		43.8		9.5		7		163.7
	Additions	0.1			0.2		0.1		—		0.4
	Impact of exchange rate movements	—			(2.6	)	(0.3	)	(0.3	)	(3.2	)
	Balance as of March 31, 2015	$	103.5		41.4		9.3		6.7		160.9
	Accumulated Amortization
	Balance as of January 1, 2015	$	(84.9	)	(31.0	)	(8.9	)	(0.1	)	(124.9	)
	Amortization expense	(1.6		)	(0.3	)	(0.1	)	—		(2.0	)
	Impact of exchange rate movements	(0.1		)	1.8		0.3		—		2
	Balance as of March 31, 2015	$	(86.6	)	(29.5	)	(8.7	)	(0.1	)	(124.9	)
	Net book value as of March 31, 2015	$	16.9		11.9		0.6		6.6		36
Future Amortization Expense for Finite-Lived Intangible Assets	March 31, 2015, is as follows ($ in millions):
	2015 (9 months)	$	8.3
	2016	6.4
	2017	5.6
	2018	3.8
	2019	2.4
	2020	2.9
	Thereafter	—
	Total	$	29.4

Investments_in_Real_Estate_Ven1

Investments in Real Estate Ventures (Tables)	3 Months Ended
	Mar. 31, 2015
Schedule of Equity Method Investments [Line Items]
Schedule of Equity Method Investments [Table Text Block]	The following table summarizes the above discussion relative to LIC II as of March 31, 2015 ($ in millions):
	Our effective ownership interest in co-investment vehicle	48.78		%
	Our maximum potential unfunded commitments	$	98.2
	Our share of unfunded capital commitments to underlying funds	69
	Our maximum exposure, assuming facility is fully drawn	9.8
	Our share of exposure on outstanding borrowings	1
Investments in real estate ventures	The following table shows the roll forward of our investments in real estate ventures that are accounted for at fair value ($ in millions):
		2015			2014
	Fair value investments as of January 1,	$	113.6		78.9
	Investments	13.8			0.8
	Distributions	(1.2		)	—
	Net fair value gain	7.1			1.2
	Foreign currency translation adjustments, net	(2.6		)	(0.2	)
	Fair value investments as of March 31,	$	130.7		80.7
Consolidated Variable Interest Entities [Member]
Schedule of Equity Method Investments [Line Items]
Balance Sheet Amounts Consolidated for Variable Interest Entity [Table Text Block]	Summarized balance sheets for our consolidated VIEs as of March 31, 2015 and December 31, 2014 are as follows ($ in millions):
		31-Mar-15				31-Dec-14
	Property and equipment, net	$	32.4			37.8
	Investment in real estate venture	5.1				5
	Other assets	3.1				3.5
	Total assets	$	40.6			46.3
	Mortgage loans payable, included in other long-term liabilities	$	24.9			29.3
	Total liabilities	24.9				29.3
	Members' equity	15.7				17
	Total liabilities and members' equity	$	40.6			46.3
Comprehensive Income Amounts Consolidated for Variable Interest Entity [Table Text Block]	Summarized statements of operations for our consolidated VIEs for the three months ended March 31, 2015 and 2014 are as follows ($ in millions):
		Three Months				Three Months
		Ended				Ended
		March 31, 2015				March 31, 2014
	Revenue	$	1.1			0.5
	Gain on sale of investment	1.3				—
	Operating and other expenses	(0.9		)		(0.4	)
	Net income	$	1.5			0.1

Stockbased_Compensation_Tables

Stock-based Compensation (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Restricted Stock Unit Activity
	Restricted stock unit activity for the three months ended March 31, 2015 and 2014 is as follows:
		Shares		Weighted Average		Weighted Average
		(thousands)		Grant Date		Remaining
				Fair Value		Contractual Life
	Unvested at January 1, 2015	745.3		$	90.43
	Granted	121		159.91
	Vested	(41.8	)	80.61
	Forfeited	(4.1	)	89.1
	Unvested at March 31, 2015	820.4		$	101.18	2.35
	Unvested shares expected to vest	796.7		$	101.41	2.36
	Unvested at January 1, 2014	1,025.30		$	73.1
	Granted	135.3		118.42
	Vested	(129.5	)	58.18
	Forfeited	—		—
	Unvested at March 31, 2014	1,031.10		$	80.92	2.36
	Unvested shares expected to vest	997.1		$	81.1	2.37

Retirement_Plans_Retirement_Pl

Retirement Plans Retirement Plans (Tables)	3 Months Ended
	Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Schedule of Net Benefit Costs [Table Text Block]	Net periodic pension cost (income) consisted of the following ($ in millions):
		Three Months			Three Months
		Ended			Ended
		March 31, 2015			March 31, 2014
	Employer service cost - benefits earned during the period	$	1.3		1
	Interest cost on projected benefit obligation	3.6			4.1
	Expected return on plan assets	(5.2		)	(6.2	)
	Net amortization of deferrals	0.8			0.3
	Recognized actuarial loss	0.4			—
	Net periodic pension cost (income)	$	0.9		(0.8	)

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following table categorizes by level in the fair value hierarchy the estimated fair value at March 31, 2015 and December 31, 2014 of our assets and liabilities that are measured at fair value on a recurring basis ($ in millions):
			31-Mar-15			31-Dec-14
			Level 2		Level 3	Level 2		Level 3
	Assets
		Foreign currency forward contracts receivable	$	17.6	—	$	10.5	—
		Deferred compensation plan assets	124.1		—	111.2		—
		Investments in real estate ventures - fair value	—		130.7	—		113.6
	Total assets at fair value		$	141.7	130.7	$	121.7	113.6
	Liabilities
		Foreign currency forward contracts payable	$	24.5	—	$	18.2	—
		Deferred compensation plan liabilities	121.6		—	107.9		—
	Total liabilities at fair value		$	146.1	—	$	126.1	—

Commitments_and_Contingencies_

Commitments and Contingencies Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2015
Loss Contingencies [Line Items]
Schedule of Loss Contingencies by Contingency [Table Text Block]	The following table shows the professional indemnity accrual activity and the related payments made during the three months ended March 31, 2015 and 2014 ($ in millions):
		Accrual Activity
	1-Jan-15	$	9.2
	New claims	2.2
	Prior year claims adjustments	(2.0		)
	Claims paid	—
	March 31, 2015	$	9.4
	1-Jan-14	$	6.2
	New claims	0.3
	Prior year claims adjustments	(0.2		)
	Claims paid	(0.6		)
	March 31, 2014	$	5.7

Restructuring_and_Acquisition_1

Restructuring and Acquisition Charges (Tables)	3 Months Ended
	Mar. 31, 2015
Restructuring and Related Activities [Abstract]
Restructuring Charges and Related Payment Activity	The following table shows the restructuring and acquisition accrual activity, exclusive of the $34.5 million indemnification asset write-off in 2014, and the related payments made during the three months ended March 31, 2015 and 2014 ($ in millions):
		Severance			Retention	Lease		Other		Total
					Bonuses	Exit		Acquisition
								Costs
	1-Jan-15	$	3		—	4.2		0.4		$	7.6
	Accruals	(0.1		)	—	—		0.9		0.8
	Payments made	(0.7		)	—	(1.1	)	(0.4	)	(2.2		)
	March 31, 2015	$	2.2		—	3.1		0.9		$	6.2
		Severance			Retention	Lease		Other		Total
					Bonuses	Exit		Acquisition
								Costs
	1-Jan-14	$	3.8		0.4	5.9		0.4		$	10.5
	Accruals	1.9			—	(1.4	)	0.9		1.4
	Payments made	(1.3		)	—	(1.3	)	(1.2	)	(3.8		)
	March 31, 2014	$	4.4		0.4	3.2		0.1		$	8.1

Noncontrolling_Interest_Noncon

Noncontrolling Interest Noncontrolling Interest (Tables)	3 Months Ended
	Mar. 31, 2015
Noncontrolling Interest [Abstract]
Redeemable Noncontrolling Interest [Table Text Block]	Changes in amounts attributable to redeemable noncontrolling interests are presented in the following table ($ in millions):
	Redeemable noncontrolling interests as of January 1, 2015	$	13.4
	Acquisition of redeemable noncontrolling interest (1)	(2.8		)
	Net loss	0.2
	Impact of exchange rate movements	(1.2		)
	Redeemable noncontrolling interests as of March 31, 2015	$	9.2
	(1) Activity reflects our purchase of a portion of the redeemable noncontrolling interest related to our 2014 acquisition of Tenzing AB.

Revenue_Recognition_Details

Revenue Recognition (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Revenue Recognition [Abstract]
Construction management revenue, net of subcontractor costs	$0.60	$1.20
Gross construction services revenue	17.1	27.5
Subcontract costs	16.5	26.3
Costs in excess of billings on uncompleted construction contracts	2.7		3.4
Billings in excess of costs on uncompleted construction contracts	7.1		7.9
Reimbursable contract costs	548.7	478.9
Gross revenue and expenses for management services	$174.40	$159.60

Business_Segments_Details

Business Segments (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Segment revenue:
Revenue	$1,203,511	$1,037,442
Equity in earnings (losses)	11,384	8,903
Total segment revenue	1,214,895	1,046,345
Operating expenses:
Depreciation and amortization	24,923	22,411
Total operating expenses	1,150,853	1,052,708
Operating income	52,658	-15,266
Segment Reconciling Items:
Revenue	1,203,511	1,037,442
Equity in earnings (losses)	11,384	8,903
Total segment revenue	1,214,895	1,046,345
Total segment operating expenses before restructuring charges	1,150,037	1,016,750
Segment Reporting Information Operating Income Before Restructuring Charges	53,474	20,692
Restructuring and acquisition charges	816	35,958
Operating income	52,658	-15,266
Reportable Subsegments [Member] | Americas [Member]
Segment revenue:
Revenue	554,196	447,082
Equity in earnings (losses)	347	235
Total segment revenue	554,543	447,317
Gross contract costs	-52,959	-40,783
Total segment fee revenue	501,584	406,534
Operating expenses:
Compensation, operating and administrative expenses	503,577	417,009
Depreciation and amortization	15,551	13,311
Total operating expenses	519,128	430,320
Gross contract costs	-52,959	-40,783
Total fee based segment operating expenses	466,169	389,537
Operating income	35,415	16,997
Segment Reconciling Items:
Revenue	554,196	447,082
Equity in earnings (losses)	347	235
Total segment revenue	554,543	447,317
Operating income	35,415	16,997
Reportable Subsegments [Member] | EMEA [Member]
Segment revenue:
Revenue	325,774	311,882
Equity in earnings (losses)	-368	0
Total segment revenue	325,406	311,882
Gross contract costs	-71,862	-77,853
Total segment fee revenue	253,544	234,029
Operating expenses:
Compensation, operating and administrative expenses	323,086	311,346
Depreciation and amortization	5,226	5,444
Total operating expenses	328,312	316,790
Gross contract costs	-71,862	-77,853
Total fee based segment operating expenses	256,450	238,937
Operating income	-2,906	-4,908
Segment Reconciling Items:
Revenue	325,774	311,882
Equity in earnings (losses)	-368	0
Total segment revenue	325,406	311,882
Operating income	-2,906	-4,908
Reportable Subsegments [Member] | Asia Pacific [Member]
Segment revenue:
Revenue	237,750	214,705
Equity in earnings (losses)	-53	-82
Total segment revenue	237,697	214,623
Gross contract costs	-49,588	-40,967
Total segment fee revenue	188,109	173,656
Operating expenses:
Compensation, operating and administrative expenses	229,622	210,305
Depreciation and amortization	3,639	3,168
Total operating expenses	233,261	213,473
Gross contract costs	-49,588	-40,967
Total fee based segment operating expenses	183,673	172,506
Operating income	4,436	1,150
Segment Reconciling Items:
Revenue	237,750	214,705
Equity in earnings (losses)	-53	-82
Total segment revenue	237,697	214,623
Operating income	4,436	1,150
Investment Management [Member]
Segment revenue:
Revenue	85,791	63,773
Equity in earnings (losses)	11,458	8,750
Total segment revenue	97,249	72,523
Operating expenses:
Compensation, operating and administrative expenses	68,829	55,679
Depreciation and amortization	507	488
Total operating expenses	69,336	56,167
Operating income	27,913	16,356
Segment Reconciling Items:
Revenue	85,791	63,773
Equity in earnings (losses)	11,458	8,750
Total segment revenue	97,249	72,523
Operating income	$27,913	$16,356

Business_Combinations_Details

Business Combinations (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
	acquisition
Business Acquisition [Line Items]
Minority Shareholder Redemption Liability, Current	$16,333,000		$11,158,000
Minority Shareholder Redemption Liability, Increase (Decrease)	5,400,000
Business acquisitions	3,668,000	9,173,000
Deferred acquisition obligations paid	3,900,000
Payments for Repurchase of Redeemable Noncontrolling Interest	2,655,000	0
Business Combinations, Guaranteed Deferred Acquisition Obligation	451,000	0
Contingent Consideration Earn-Out, Fair Value	3,900,000
Number of acquisitions subject to potential earn-out payments provisions	15
Maximum amount of the potential earn-out payments	43,600,000
Business Combination, Contingent Consideration, Liability	26,800,000
Unamortized intangibles and goodwill	1,900,000,000
Goodwill	1,870,534,000		1,907,924,000
Finite-Lived Intangible Assets, Net	29,400,000
Identifiable intangibles with indefinite useful lives	6,600,000
Reportable Subsegments [Member] | Americas [Member]
Business Acquisition [Line Items]
Goodwill	1,007,900,000		1,008,300,000
Reportable Subsegments [Member] | EMEA [Member]
Business Acquisition [Line Items]
Goodwill	612,600,000		650,400,000
Reportable Subsegments [Member] | Asia Pacific [Member]
Business Acquisition [Line Items]
Goodwill	232,400,000		230,800,000
Investment Management [Member]
Business Acquisition [Line Items]
Goodwill	$17,600,000		$18,400,000

Business_Combinations_Goodwill2

Business Combinations, Goodwill by Segment (Details) (USD $)	3 Months Ended
	Mar. 31, 2015
Goodwill [Roll Forward]
Goodwill	$1,907,924,000
Goodwill Additions, net of adjustments	12,400,000
Goodwill, Translation Adjustments	-49,800,000
Goodwill	1,870,534,000
Investment Management [Member]
Goodwill [Roll Forward]
Goodwill	18,400,000
Goodwill Additions, net of adjustments	0
Goodwill, Translation Adjustments	-800,000
Goodwill	17,600,000
Americas [Member] | Reportable Subsegments [Member]
Goodwill [Roll Forward]
Goodwill	1,008,300,000
Goodwill Additions, net of adjustments	0
Goodwill, Translation Adjustments	-400,000
Goodwill	1,007,900,000
EMEA [Member] | Reportable Subsegments [Member]
Goodwill [Roll Forward]
Goodwill	650,400,000
Goodwill Additions, net of adjustments	6,400,000
Goodwill, Translation Adjustments	-44,200,000
Goodwill	612,600,000
Asia Pacific [Member] | Reportable Subsegments [Member]
Goodwill [Roll Forward]
Goodwill	230,800,000
Goodwill Additions, net of adjustments	6,000,000
Goodwill, Translation Adjustments	-4,400,000
Goodwill	$232,400,000

Business_Combinations_Other_In

Business Combinations Other Intangibles by Segment (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Schedule of Finite and Indefinite lived Intangible Assets by Segment [Line Items]
Finite And Indefinite Lived Intangible Assets Gross	$160,900,000	$163,700,000
Finite and Indefinite lived Intangible Assets, Additions	400,000
Finite And Indefinite Lived Intangible Assets Translation Adjustments	-3,200,000
Identified intangibles, with finite useful lives, accumulated amortization	124,915,000	124,920,000
Amortization expense	2,000,000
Impact of exchange rate movements	-2,000,000
Net book value as of end of period	36,014,000	38,841,000
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
2015 (9 months)	8,300,000
2016	6,400,000
2017	5,600,000
2018	3,800,000
2019	2,400,000
2020	2,900,000
Thereafter	0
Total	29,400,000
Reportable Subsegments [Member] | Americas [Member]
Schedule of Finite and Indefinite lived Intangible Assets by Segment [Line Items]
Finite And Indefinite Lived Intangible Assets Gross	103,500,000	103,400,000
Finite and Indefinite lived Intangible Assets, Additions	100,000
Finite And Indefinite Lived Intangible Assets Translation Adjustments	0
Identified intangibles, with finite useful lives, accumulated amortization	86,600,000	84,900,000
Amortization expense	1,600,000
Impact of exchange rate movements	100,000
Net book value as of end of period	16,900,000
Reportable Subsegments [Member] | EMEA [Member]
Schedule of Finite and Indefinite lived Intangible Assets by Segment [Line Items]
Finite And Indefinite Lived Intangible Assets Gross	41,400,000	43,800,000
Finite and Indefinite lived Intangible Assets, Additions	200,000
Finite And Indefinite Lived Intangible Assets Translation Adjustments	-2,600,000
Identified intangibles, with finite useful lives, accumulated amortization	29,500,000	31,000,000
Amortization expense	300,000
Impact of exchange rate movements	-1,800,000
Net book value as of end of period	11,900,000
Reportable Subsegments [Member] | Asia Pacific [Member]
Schedule of Finite and Indefinite lived Intangible Assets by Segment [Line Items]
Finite And Indefinite Lived Intangible Assets Gross	9,300,000	9,500,000
Finite and Indefinite lived Intangible Assets, Additions	100,000
Finite And Indefinite Lived Intangible Assets Translation Adjustments	-300,000
Identified intangibles, with finite useful lives, accumulated amortization	8,700,000	8,900,000
Amortization expense	100,000
Impact of exchange rate movements	-300,000
Net book value as of end of period	600,000
Investment Management [Member]
Schedule of Finite and Indefinite lived Intangible Assets by Segment [Line Items]
Finite And Indefinite Lived Intangible Assets Gross	6,700,000	7,000,000
Finite and Indefinite lived Intangible Assets, Additions	0
Finite And Indefinite Lived Intangible Assets Translation Adjustments	-300,000
Identified intangibles, with finite useful lives, accumulated amortization	100,000	100,000
Amortization expense	0
Impact of exchange rate movements	0
Net book value as of end of period	$6,600,000

Investments_in_Real_Estate_Ven2

Investments in Real Estate Ventures (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
	investment
Schedule of Equity Method Investments [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	$80,900,000
Revenue	1,203,511,000	1,037,442,000
Property, Plant and Equipment, Net	353,818,000		368,361,000
Total investments in real estate ventures	304,770,000		297,142,000
Number of separate property or fund co-investments	50
Minimum ownership percentage in real estate ventures (in hundredths)	1.00%
Maximum ownership percentage in real estate ventures (in hundredths)	15.00%
Impairment [Abstract]
Impairment charges	3,600,000	800,000
Minimum expected period for vehicle to draw down on commitment	3 years
Maximum expected period for vehicle to draw down on commitment	5 years
Fair Value [Abstract]
Fair value investments at beginning of the period	113,600,000	78,900,000
Investments	13,800,000	800,000
Distributions	1,200,000	0
Unrealized Gain (Loss) on Investments	7,100,000	1,200,000
Foreign currency translation adjustments, net	-2,600,000	-200,000
Fair value investments at end of the period	130,700,000	80,700,000
Assets	4,996,418,000		5,075,336,000
Other Liabilities, Noncurrent	112,475,000		118,969,000
Liabilities	2,639,542,000		2,652,767,000
Liabilities and Equity	4,996,418,000		5,075,336,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	43,271,000	16,145,000
LaSalle Investment Company II [Member]
Schedule of Equity Method Investments [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	98,200,000
Unfunded capital commitments to the underlying funds for future funding of co-investments	141,500,000
Partnership ownership interest (in hundredths)	48.78%
Revolving credit facility, maximum capacity	20,000,000
Entity's maximum exposure, assuming facility was fully drawn	9,800,000
Maximum loss exposure, amount	98,200,000
Fair Value [Abstract]
Entity share of Unfunded Capital Commitments for Future Fundings	69,000,000
Entity Share Of Exposure On Outstanding Borrowings	1,000,000
Variable Interest Entities [Member]
Fair Value [Abstract]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net	7,600,000		4,300,000
Consolidated Variable Interest Entities [Member]
Schedule of Equity Method Investments [Line Items]
Revenue	1,100,000	500,000
Gains (Losses) on Sales of Investment Real Estate	1,300,000	0
Other Expenses	900,000	400,000
Property, Plant and Equipment, Net	32,400,000		37,800,000
Total investments in real estate ventures	5,100,000		5,000,000
Fair Value [Abstract]
Other Assets	3,100,000		3,500,000
Assets	40,600,000		46,300,000
Other Liabilities, Noncurrent	24,900,000		29,300,000
Liabilities	24,900,000		29,300,000
Members' Equity	15,700,000		17,000,000
Liabilities and Equity	40,600,000		46,300,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$1,500,000	$100,000

Stockbased_Compensation_Detail

Stock-based Compensation (Details) (USD $)	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Restricted Stock Units (RSUs)
Restricted stock unit activity [Roll Forward]
Unvested at beginning of period (in shares)	745,300	1,025,300
Granted (in shares)	121,000	135,300
Vested (in shares)	-41,800	-129,500
Forfeited (in shares)	-4,100	0
Unvested at end of period (in shares)	820,400	1,031,100
Unvested shares expected to vest (in shares)	796,700	997,100
Restricted stock unit activity, additional disclosures [Abstract]
Weighted average grant date fair value, beginning of period (in dollars per share)	$90.43	$73.10
Weighted average grant date fair value, granted (in dollars per share)	$159.91	$118.42
Weighted average grant date fair value, vested (in dollars per share)	$80.61	$58.18
Weighted average grant date fair value, forfeited (in dollars per share)	$89.10	$0
Weighted average grant date fair value, end of period (in dollars per share)	$101.18	$80.92
Weighted average grant date fair value, unvested shares expected to vest (in dollars per share)	$101.41	$81.10
Weighted average remaining contractual life, unvested shares outstanding and expected to vest	2 years 4 months 5 days	2 years 4 months 11 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term	2 years 4 months 9 days	2 years 4 months 15 days
Unamortized deferred compensation cost	$35.80
Fair value of shares vested	3.4	7.5
Share Based Compensation Arrangement By ShareBased Payment Award, Equity Instruments Other Than Options, Grants In Period, Weighted Average Grant Date Fair Value	$19.30	$16
Jones Lang Lasalle Savings Related Share Option Plan [Member] | Options
Other Stock Compensation Programs [Abstract]
Discount on purchase price (in hundredths)	15.00%
Options outstanding (in shares)	172,800		176,400
Three year vesting | Jones Lang Lasalle Savings Related Share Option Plan [Member] | Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Five year vesting | Jones Lang Lasalle Savings Related Share Option Plan [Member] | Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	5 years

Retirement_Plans_Details

Retirement Plans (Details) (USD $)	3 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Contributory defined benefit pension plans	4
Net periodic pension cost [Abstract]
Employer service cost - benefits earned during the period	$1.30	$1
Interest cost on projected benefit obligation	3.6	4.1
Expected return on plan assets	-5.2	-6.2
Net amortization of deferrals	-0.8	-0.3
Recognized actuarial loss	0.4	0
Net periodic pension cost	0.9	-0.8
Pension Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Minimum expected return on plan assets (in hundredths)	2.70%
Maximum expected return on plan assets (in hundredths)	5.80%
Contributions [Abstract]
Contributions to defined benefit pension plans	2.7	3.5	14.6
Expected contributions in remainder of fiscal year	9.3
Total contributions in fiscal year	$12

Fair_Value_Measurements_Assets

Fair Value Measurements (Assets and Liabilities Measured on a Recurring Basis) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in real estate ventures accounted for at fair value	$130,665,000	$113,602,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency forward contracts receivable	17,600,000	10,500,000
Deferred compensation plan assets	124,100,000	111,200,000
Investments in real estate ventures accounted for at fair value	0	0
Total assets at fair value	141,700,000	121,700,000
Foreign currency forward contracts payable	24,500,000	18,200,000
Deferred compensation plan liabilities	121,600,000	107,900,000
Total liabilities at fair value	146,100,000	126,100,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency forward contracts receivable	0	0
Deferred compensation plan assets	0	0
Investments in real estate ventures accounted for at fair value	130,700,000	113,600,000
Total assets at fair value	130,700,000	113,600,000
Foreign currency forward contracts payable	0	0
Deferred compensation plan liabilities	0	0
Total liabilities at fair value	$0	$0

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long-term debt	$290,200,000		$285,300,000
Carrying amount of long term debt	275,000,000
Foreign currency forward contracts, gross notional value	2,000,000,000		2,030,000,000
Foreign currency forward contracts, net notional value	1,030,000,000		1,190,000,000
Foreign Exchange Contracts, Fair Value Gain (loss)	-6,900,000	7,200,000
Deferred compensation plan, contra-equity, shares held in trust	6,300,000		6,400,000
Fair value of investments	130,700,000	80,700,000	113,600,000	78,900,000
Foreign Exchange Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	18,200,000		12,500,000
Derivative Asset, Fair Value, Gross Liability	600,000		2,000,000
Derivative Liability, Fair Value, Gross Liability	26,400,000		19,300,000
Derivative Liability, Fair Value, Gross Asset	$1,900,000		$1,100,000

Debt_Details

Debt (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Nov. 30, 2012
Line of Credit Facility [Line Items]
Letters of Credit Outstanding, Amount	$23,000,000		$22,000,000
Amount outstanding	335,000,000		0
Short-term borrowings	21,215,000		19,623,000
Unsecured Credit Facility [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity	2,000,000,000		1,200,000,000
Outstanding borrowings on the revolving credit facility	335,000,000		0
Average outstanding borrowings	158,000,000	274,700,000
Pricing on the Facility based on market rates	LIBOR plus 1.00% to 2.05%
Description of Variable Rate Basis	LIBOR
Basis spread on variable rate (in hundredths)	1.00%
Line of credit, interest rate during period	1.10%	1.30%
Covenant terms, minimum leverage ratio through September 2014	350.00%
Covenant Terms Minimum Leverage Ratio Through Specified Date Following a Material Acquisition	400.00%
Covenant terms, minimum cash interest coverage ratio	300.00%
Overdraft Facilities [Member]
Line of Credit Facility [Line Items]
Borrowing capacity remaining	42,200,000
Bank Overdrafts	14,300,000		14,600,000
Long-Term Senior Notes [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Face Amount				$275,000,000
Debt Instrument, Interest Rate, Stated Percentage	4.40%
Minimum [Member]
Line of Credit Facility [Line Items]
Description of Variable Rate Basis	LIBOR
Basis spread on variable rate (in hundredths)	1.00%
Maximum [Member]
Line of Credit Facility [Line Items]
Description of Variable Rate Basis	LIBOR
Basis spread on variable rate (in hundredths)	1.75%

Commitments_and_Contingencies_1

Commitments and Contingencies (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Level of risk retained by our captive insurance company (per claim)	$2.50
Loss Contingency Accrual [Roll Forward]
Loss Contingency Accrual	9.2	6.2
Loss Contingency Accrual, Provision	2.2	0.3
Loss Contingency Accrual, Provision Adjustment	-2	-0.2
Loss Contingency Accrual, Payments	0	-0.6
Loss Contingency Accrual	$9.40	$5.70

Restructuring_and_Acquisition_2

Restructuring and Acquisition Charges (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring and acquisition charges	$816,000	$35,958,000
Restructuring charges	800,000	1,400,000
Restructuring reserve [Roll Forward]
Restructuring reserve, beginning balance	7,600,000	10,500,000
Restructuring charges	800,000	1,400,000
Payments made	-2,200,000	-3,800,000
Restructuring reserve, ending balance	6,200,000	8,100,000
Business Combination, Indemnification Assets		34,500,000
Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	-100,000	1,900,000
Restructuring reserve [Roll Forward]
Restructuring reserve, beginning balance	3,000,000	3,800,000
Restructuring charges	-100,000	1,900,000
Payments made	-700,000	-1,300,000
Restructuring reserve, ending balance	2,200,000	4,400,000
Retention Bonuses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	0
Restructuring reserve [Roll Forward]
Restructuring reserve, beginning balance	0	400,000
Restructuring charges	0	0
Payments made	0	0
Restructuring reserve, ending balance	0	400,000
Lease Exit [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	-1,400,000
Restructuring reserve [Roll Forward]
Restructuring reserve, beginning balance	4,200,000	5,900,000
Restructuring charges	0	-1,400,000
Payments made	-1,100,000	-1,300,000
Restructuring reserve, ending balance	3,100,000	3,200,000
Other Acquisition Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	900,000	900,000
Restructuring reserve [Roll Forward]
Restructuring reserve, beginning balance	400,000	400,000
Restructuring charges	900,000	900,000
Payments made	-400,000	-1,200,000
Restructuring reserve, ending balance	$900,000	$100,000

Noncontrolling_Interest_Noncon1

Noncontrolling Interest Noncontrolling Interest (Details) (USD $)	3 Months Ended
	Mar. 31, 2015
Noncontrolling Interest [Abstract]
Redeemable Noncontrolling Interest	$13,449,000
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	-2,800,000
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest	198,000
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax, Portion Attributable to Noncontrolling Interest	-1,200,000
Redeemable Noncontrolling Interest	$9,185,000

Subsequent_Events_Subsequent_E

Subsequent Events Subsequent Event (Details) (Subsequent Event [Member], USD $)	0 Months Ended
	Apr. 27, 2015
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends, Common Stock, Cash	$0.27