Jones Lang LaSalle (JLL) 10-Q 6 Nov 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Nov. 02, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	JONES LANG LASALLE INC
Entity Central Index Key	1,037,976
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		45,366,426
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2017
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes

Consolidated Balance Sheets (un

Consolidated Balance Sheets (unaudited) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 277.9	$ 258.5
Trade receivables, net of allowances	1,779.1	1,870.6
Notes and other receivables	346.4	326.7
Warehouse receivables	337.8	600.8
Prepaid expenses	96.1	81.7
Other	149	161.4
Total current assets	2,986.3	3,299.7
Property and equipment, net of accumulated depreciation	516.6	501
Goodwill	2,701.3	2,579.3
Identified intangibles, net of accumulated amortization	307.4	295
Investments in real estate ventures	372.5	355.4
Long-term receivables	168.6	176.4
Deferred tax assets, net	190.9	180.9
Deferred Compensation Plan Assets	218.5	173
Other	92.2	68.7
Total assets	7,554.3	7,629.4
Current liabilities:
Accounts payable and accrued liabilities	793.6	846.2
Accrued compensation	930.8	1,064.7
Short-term borrowings	64.2	89.5
Deferred income	179.3	129.8
Deferred business acquisition obligations, Current	33.5	28.6
Short-term earn-out liabilities	33.2	23.8
Warehouse facilities	331.9	580.1
Other	215.9	203.6
Total current liabilities	2,582.4	2,966.3
Noncurrent liabilities:
Credit facility, net of debt issuance costs	433.6	905.4
Long-term debt, net of debt issuance costs	684.2	272.7
Deferred tax liabilities, net	24.4	21.5
Deferred compensation	232.3	201.1
Deferred business acquisition obligations, Noncurrent	54.3	73.8
Business Combination, Contingent Consideration, Liability, Noncurrent	190.3	205.8
Other	177.5	161.3
Total liabilities	4,379	4,807.9
Redeemable Noncontrolling Interest	3.9	6.8
Company shareholders' equity:
Common stock, $.01 par value per share	0.5	0.5
Additional paid-in capital	1,032	1,013.3
Retained earnings	2,491.4	2,333
Shares held in trust	(5.8)	(6)
Accumulated other comprehensive loss	(374.4)	(551.1)
Total Company shareholders' equity	3,143.7	2,789.7
Noncontrolling interest	27.7	25
Total equity	3,171.4	2,814.7
Total liabilities and equity	$ 7,554.3	$ 7,629.4

Consolidated Balance Sheets (u3

Consolidated Balance Sheets (unaudited) (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Assets
Trade receivables, allowances	$ 51.8	$ 37.1
Property and equipment, accumulated depreciation	544	488
Identified intangibles, with finite useful lives, accumulated amortization	159	180.6
Investments, Fair Value Disclosure	$ 234.2	$ 212.7
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	45,361,956	45,213,832
Common stock, shares outstanding (in shares)	45,361,956	45,213,832
Long-Term Senior Notes [Member]
Line of Credit Facility [Line Items]
Unamortized Debt Issuance Expense	$ 4.5	$ 2.3
Line of Credit [Member]
Line of Credit Facility [Line Items]
Unamortized Debt Issuance Expense	$ 16.4	$ 19.6

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement [Abstract]
Revenue	$ 1,947	$ 1,705.2	$ 5,396.9	$ 4,645.6
Operating expenses:
Compensation and benefits	1,132.3	1,012	3,146.6	2,750.4
Operating, administrative and other	651.4	568.3	1,870	1,546.5
Depreciation and amortization	41.8	35.9	122.3	98.5
Restructuring and acquisition charges	3.4	18	13.3	35.9
Total operating expenses	1,828.9	1,634.2	5,152.2	4,431.3
Operating income	118.1	71	244.7	214.3
Interest Expense, Net of Interest Income	15	12.4	42.6	32.2
Equity earnings from real estate ventures	12.6	5.5	32.7	27.7
Other Nonoperating Income	0	0	0	13.3
Income before income taxes and noncontrolling interest	115.7	64.1	234.8	223.1
Provision for income taxes	28.2	15.9	57.3	55.3
Net income	87.5	48.2	177.5	167.8
Net income attributable to noncontrolling interest	0.9	0.2	1.7	15.1
Net income attributable to the Company	86.6	48	175.8	152.7
Dividends, Share-based Compensation	0	0	0.2	0.2
Net income attributable to common shareholders	$ 86.6	$ 48	$ 175.6	$ 152.5
Basic earnings per common share (in dollars per share)	$ 1.91	$ 1.06	$ 3.88	$ 3.38
Basic weighted average shares outstanding (in shares)	45,349	45,188	45,299	45,135
Diluted earnings per common share (in dollars per share)	$ 1.89	$ 1.05	$ 3.84	$ 3.35
Diluted weighted average shares outstanding (in shares)	45,814	45,612	45,729	45,515
Common Stock, Dividends, Per Share, Declared	$ 0	$ 0	$ 0.35	$ 0.31
Other comprehensive income:
Net income attributable to the Company	$ 86.6	$ 48	$ 175.8	$ 152.7
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent	1.2	0	2	0
Foreign currency translation adjustments	45.6	(15)	174.7	(50.9)
Comprehensive income attributable to the Company	$ 133.4	$ 33	$ 352.5	$ 101.8

Consolidated Statement of Chang

Consolidated Statement of Changes in Equity (unaudited) - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Shares Held in Trust [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]
Balances at Dec. 31, 2015						$ (336.3)
Increase (decrease) in shareholders' equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax						0
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent	$ 0
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax						(50.9)
Foreign currency translation adjustments	(50.9)
Balances at Sep. 30, 2016						(387.2)
Balances at Jun. 30, 2016						(372.2)
Increase (decrease) in shareholders' equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax						0
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent	0
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax						(15)
Foreign currency translation adjustments	(15)
Balances at Sep. 30, 2016						(387.2)
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest	$ 0.1
Common Stock, Shares, Issued at Dec. 31, 2016	45,213,832
Balances at Dec. 31, 2016	$ 2,814.7	$ 0.5	$ 1,013.3	$ 2,333	$ (6)	(551.1)	$ 25
Increase (decrease) in shareholders' equity [Roll Forward]
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	177.6			175.8			1.8
Shares issued under stock compensation programs (in shares)		203,073
Shares issued under stock compensation programs	3.1		3.1
Shares repurchased for payment of taxes on stock awards (in shares)		(54,949)
Shares repurchased for payment of taxes on stock awards	(6.4)		(6.4)
Amortization of stock compensation	19.6		19.6
Dividends, Common Stock, Cash	(16.1)			(16.1)
(Increase) Decrease In Common Stock Held In Trust	0.2				0.2
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax						2
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent	2
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax						174.7
Foreign currency translation adjustments	174.7
Distributions to noncontrolling interest	$ 0.9						0.9
Common Stock, Shares, Issued at Sep. 30, 2017	45,361,956
Balances at Sep. 30, 2017	$ 3,171.4	$ 0.5	1,032	2,491.4	(5.8)	(374.4)	27.7
Balances at Jun. 30, 2017						(421.2)
Increase (decrease) in shareholders' equity [Roll Forward]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax						1.2
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent	1.2
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax						45.6
Foreign currency translation adjustments	$ 45.6
Common Stock, Shares, Issued at Sep. 30, 2017	45,361,956
Balances at Sep. 30, 2017	$ 3,171.4	$ 0.5	1,032	2,491.4	$ (5.8)	$ (374.4)	$ 27.7
Increase (decrease) in shareholders' equity [Roll Forward]
Cumulative Effect from Adoption of new accounting for stock-based compensation			1.3	$ (1.3)
Redeemable Noncontrolling Interest, Equity, Redemption Value	$ 1.1		$ 1.1

Consolidated Statement of Chan6

Consolidated Statement of Changes in Equity Consolidated Statement of Changes in Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Consolidated Statement of Change in Equity (Parenthetical) [Abstract]
Common Stock, Dividends, Per Share, Declared	$ 0	$ 0	$ 0.35	$ 0.31

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows used for operating activities:
Net income	$ 177.5	$ 167.8
Adjustments to reconcile net income to net cash used in operating activities:
Distributions of earnings from real estate ventures	24.2	24.4
Changes in working capital, net	122.5	111.3
Increase (Decrease) in Operating Capital	(28.5)	(455.4)
Net cash used in operating activities	295.7	(151.9)
Cash flows used in investing activities:
Net capital additions - property and equipment	(98.1)	(139.4)
Acquisition of investment properties (less than wholly-owned)	0	(63.7)
Business acquisitions, net of cash acquired	(18.7)	(418.6)
Payments to Acquire Investments	27	78.5
Proceeds from Sale, Maturity and Collection of Investments	24.9	43.3
Other, net	(0.8)	39.5
Net cash used in investing activities	(119.7)	(617.4)
Cash flows provided by financing activities:
Proceeds from Issuance of Senior Long-term Debt	395.7	0
Proceeds from borrowings under credit facility	2,478	2,530
Repayments of borrowings under credit facility	(2,953)	(1,680)
Payment for deferred acquisition obligations and earn-out obligation	(41.2)	(46.6)
Payments of Ordinary Dividends, Common Stock	16.1	14.2
Noncontrolling interest contributions, net	0.7	7.7
Other, net	(29.5)	(17.6)
Net cash provided by financing activities	(165.4)	779.3
Effect of currency exchange rate on Cash and Cash Equivalents	8.8	1.8
Net change in cash and cash equivalents	19.4	11.8
Cash and cash equivalents, beginning of period	258.5	216.6
Cash and cash equivalents, end of period	277.9	228.4
Cash paid during the period for:
Interest	(33.6)	(24.3)
Income taxes, net of refunds	(112.6)	(111.8)
Non-cash investing activities
Business acquisitions, including contingent consideration	11.5	90.5
Capital Leases	2.2	7.9
Non-cash financing activities:
Deferred business acquisition obligations	$ 1.8	$ 53.1

Interim Information

Interim Information	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Interim Information	1. INTERIM INFORMATION 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 "we," "us" or "our") for the year ended December 31, 2016 , which are included in our 2016 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. Management's Discussion and Analysis of Financial Condition and Result of Operations and to Note 2, Summary of Significant Accounting Policies, in the Notes to Consolidated Financial Statements in our 2016 Annual Report on Form 10-K for further discussion of our significant accounting policies and estimates. Our Condensed Consolidated Financial Statements as of September 30, 2017 and December 31, 2016 , and for the three and nine months ended September 30, 2017 and 2016 , are unaudited. In the opinion of management, we have included all adjustments (consisting solely of normal recurring adjustments) necessary for a fair presentation of the Condensed Consolidated Financial Statements for these interim periods. We have reclassified certain prior year amounts 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 certain expenses are recognized 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 is driven by 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 periods ended September 30, 2017 and 2016 are not fully indicative of what our results will be for the full fiscal year. Our Warehouse receivables are classified as held-for-sale as they represent originated mortgage loans for which we have executed commitments to sell to third-parties. Warehouse receivables have historically been carried at the lower of cost or fair value. Effective January 1, 2017, we elected the fair value option to measure and report new Warehouse receivables at fair value on an instrument-by-instrument basis. Increases or decreases in the fair value of these loans following origination are recognized in Revenue in the Condensed Consolidated Statements of Comprehensive Income. Our Warehouse receivables balance as of September 30, 2017 did not include any loans reported within our December 31, 2016 balance as all warehoused loans were sold during the three months ended March 31, 2017.

New Accounting Standards New Ac

New Accounting Standards New Accounting Standards	9 Months Ended
	Sep. 30, 2017
Text Block [Abstract]
New Accounting Standards	2. NEW ACCOUNTING STANDARDS Recently adopted accounting guidance Effective January 1, 2017, we adopted Accounting Standards Update ("ASU") No. 2016-09, Improvements to Employee Share-Based Payment Accounting , which was intended to simplify several aspects of the accounting for employee share-based payment transactions, including the accounting for income taxes, forfeitures, and statutory tax withholding requirements, as well as classification in the statement of cash flows. One primary effect of adoption was our election to account for forfeitures as they occur, rather than estimate forfeitures in our determination of periodic compensation cost; we adopted this portion of the standard on a modified retrospective basis. The second primary effect of adoption was the recognition of excess tax benefits in our provision for income taxes, rather than Additional paid-in capital, which also results in reclassification of cash flows related to excess tax benefits from a financing activity to an operating activity on the statement of cash flows for periods beginning January 1, 2017; we adopted this portion of the standard on a prospective basis with the effect of adoption reflected for the interim periods beginning this year. As a result of the adoption, we recorded a $1.3 million cumulative-effect decrease to beginning retained earnings to recognize the impact of share-based compensation expense previously estimated to be forfeited; there was no material impact to our provision for income taxes in the nine months ended September 30, 2017 . Recently issued accounting guidance, not yet adopted In March 2017, the FASB issued ASU No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Post-retirement Benefit Cost (Topic 715) , which amends the requirements for presentation of service costs and other components of net benefit costs on the Income Statement. This ASU is effective for interim and annual periods beginning after December 15, 2017, with early adoption permitted. We do not believe this guidance will have a material impact on our financial statements and related disclosures. In January 2017, the FASB issued ASU No. 2017-04, Simplifying the Test for Goodwill Impairment , which eliminates Step 2 from the goodwill impairment test. The annual goodwill impairment test will require companies to compare the fair value of a reporting unit with its carrying amount and recognize an impairment charge when the carrying amount exceeds the fair value of the reporting unit. This ASU is effective for annual and interim goodwill impairment tests beginning after December 15, 2019, with early adoption permitted. We do not believe this guidance will have a material impact on our financial statements and related disclosures. In August 2016, the FASB issued ASU No. 2016-15, Classification of Certain Cash Receipts and Cash Payments , which addresses appropriate presentation and classification of certain cash receipts and cash payments within the statement of cash flows under Accounting Standards Codification ("ASC") Topic 230, Statement of Cash Flows . Specifically, this ASU provides clarification guidance on eight cash flow issues intended to improve comparability across financial statements. This ASU is effective for annual and interim periods beginning after December 15, 2017, with early adoption permitted. We do not believe this guidance will have a material impact on our financial statements and related disclosures. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326) , which creates a new framework to evaluate financial instruments, such as trade receivables, for expected credit losses. This new framework replaces the existing incurred loss approach and is expected to result in more timely recognition of credit losses. ASU No. 2016-13 is effective for annual and interim periods beginning after December 15, 2019 and early adoption is not permitted until years beginning after December 15, 2018. We are evaluating the effect this guidance will have on our financial statements and related disclosures. In March 2016, the FASB issued ASU No. 2016-08, Principal versus Agent Considerations (Reporting Revenue Gross versus Net) , which clarifies the implementation guidance on principal versus agent considerations and together with ASU No. 2014-09 (collectively the "ASUs"), as discussed below, amends and comprises ASC Topic 606 , Revenue from Contracts with Customers . In May 2014, the FASB issued 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. These ASUs, and other related ASUs, will replace most existing revenue recognition guidance in U.S. generally accepted accounting principles ("U.S. GAAP") when effective. The final standard is effective for annual and interim periods in fiscal years beginning after December 15, 2017, with early adoption permitted for annual and interim periods in fiscal years beginning after December 15, 2016. We plan to apply the full retrospective approach to adopt ASC Topic 606. Based upon analyses performed, we anticipate ASC Topic 606 will result in an acceleration of the timing of revenue recognition for certain transaction commissions and advisory services. These items include variable consideration or other aspects, such as contingencies, that preclude revenue recognition contemporaneous with the satisfaction of our performance obligations within the existing revenue recognition framework. We do not expect the acceleration of the timing of revenue recognition to have a material impact to our Consolidated Financial Statements. In addition, we anticipate implementation of the updated principal versus agent considerations in ASC Topic 606 will result in a significant increase to the proportion of our Property & Facility Management and Project & Development Services contracts accounted for on a gross basis. Under the legacy principal versus agent framework, our evaluations for presentation of a service contract contemplated both performance and payment risk. Contractual provisions with clients and vendors, such as “pay-when-paid”, that substantially mitigate payment risk to us with respect to on-site personnel and other expenses incurred on our clients’ behalf have historically resulted in the majority of our service contracts being accounted for on a net basis. However, within ASC Topic 606, payment risk is not an evaluation factor; instead, control of the service before transfer to the customer is the focal point of principal versus agent assessments. Within certain Property & Facility Management and Project & Development Services contracts, we have concluded that we control the services provided by a third party on behalf of clients. Therefore upon adoption of ASC Topic 606, for these service contracts, we will present the expenses incurred on behalf of clients along with the corresponding reimbursement revenue on a gross basis. Based upon evaluations which are ongoing, we estimate our application of the full retrospective approach will result in our full-year 2016 Consolidated Statements of Comprehensive Income reflecting approximately $5.5 billion to $6.5 billion of additional Revenue and an equal amount of Operating expenses. The estimated increase is anticipated to be most impacted by service contracts in the U.S. We expect the impact for 2017 to be generally consistent with 2016; however, we have not yet completed these assessments. We do not anticipate a material impact to our other revenue streams beyond what is discussed above. We expect the adoption of ASC Topic 606 to result in a material increase to total assets and total liabilities to reflect (i) contract assets and accrued commissions payable recognized upon acceleration of the timing of revenue recognition for certain transaction commissions and advisory services and (ii) nearly balanced receivables and payables relating to Property & Facility Management and Project & Development Services contracts to be reported on a gross basis. Our assessment with respect to the quantitative impact of ASC Topic 606 on our Consolidated Balance Sheets is ongoing. Finally, we expect the adoption of ASC Topic 606 to have a notable increase to the level of detail provided by our disclosures, including further disaggregation of revenue, quantitative and qualitative information about performance obligations, as well as additional balance sheet disclosures. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) , which increases transparency and comparability by requiring the recognition of lease assets and lease liabilities on the balance sheet as well as requiring the disclosure of key information about leasing arrangements. This ASU is effective for annual and interim periods beginning after December 15, 2018, with early adoption permitted. We anticipate the adoption of this ASU will result in an increase to the Condensed Consolidated Balance Sheet to reflect right-of-use assets and lease liabilities primarily associated with our office leases around the world. However, we have not yet quantified this impact nor the impact associated with non-real estate leases. We continue to evaluate any other effect the guidance will have on our financial statements and related disclosures.

Business Segments

Business Segments	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Business Segments	3. 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 define "property management" to mean services we provide to non-occupying property investors and "facilities management" to represent services we provide 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, which we allocate to the business segments based on the budgeted operating expenses of each segment. For segment reporting, (a) gross contract costs and (b) net non-cash mortgage servicing rights ("MSR") and mortgage banking derivative activity are both excluded from revenue in determining "fee revenue". Gross contract costs are excluded from operating expenses in determining "fee-based operating expenses." Excluding these costs from revenue and expenses results in a net presentation which we believe more accurately reflects how we manage our expense base, operating margins, and performance. In addition, our measure of segment results excludes Restructuring and acquisition charges. We have reclassified certain prior year amounts to conform to the current presentation. Specifically during the first quarter of 2017, we revised our methodology for allocating overhead expenses and certain costs associated with our facilities management platform in EMEA to our reporting segments. Prior year amounts have been reclassified to conform to the current presentation. Reclassifications have not been material and have not affected reported net income or consolidated results. The Chief Operating Decision Maker of JLL measures and evaluates the segment results excluding (a) gross contract costs, (b) net non-cash MSR and mortgage banking derivative activity, and (c) Restructuring and acquisition charges. As of September 30, 2017 , we define the Chief Operating Decision Maker collectively as our Global Executive Board, which is comprised of the following: • Global Chief Executive Officer • Global Chief Financial Officer • Chief Executive Officers of each of our four business segments • Global Chief Executive Officer of Corporate Solutions • Global Head of Capital Markets • Global Chief Human Resources Officer Summarized financial information by business segment is as follows. Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2017 2016 2017 2016 Real Estate Services Americas Revenue $ 796.7 771.1 $ 2,311.3 2,047.5 Gross contract costs (40.4 ) (52.6 ) (131.4 ) (144.8 ) Net non-cash MSR and mortgage banking derivative activity (7.1 ) (2.9 ) (11.1 ) (2.3 ) Total fee revenue 749.2 715.6 2,168.8 1,900.4 Operating expenses: Compensation, operating and administrative expenses 699.1 686.0 2,054.0 1,842.2 Depreciation and amortization 24.2 21.3 71.4 58.4 Total segment operating expenses 723.3 707.3 2,125.4 1,900.6 Gross contract costs (40.4 ) (52.6 ) (131.4 ) (144.8 ) Total fee-based segment operating expenses 682.9 654.7 1,994.0 1,755.8 Segment operating income $ 73.4 63.8 $ 185.9 146.9 Equity earnings 0.1 0.1 0.5 0.8 Total segment income $ 73.5 63.9 $ 186.4 147.7 EMEA Revenue $ 635.2 522.7 $ 1,727.1 1,373.4 Gross contract costs (171.6 ) (146.2 ) (464.7 ) (407.3 ) Total fee revenue 463.6 376.5 1,262.4 966.1 Operating expenses: Compensation, operating and administrative expenses 621.4 513.9 1,712.3 1,348.9 Depreciation and amortization 11.6 9.6 33.0 25.6 Total segment operating expenses 633.0 523.5 1,745.3 1,374.5 Gross contract costs (171.6 ) (146.2 ) (464.7 ) (407.3 ) Total fee-based segment operating expenses 461.4 377.3 1,280.6 967.2 Segment operating income (loss) $ 2.2 (0.8 ) $ (18.2 ) (1.1 ) Equity losses — — — (0.1 ) Total segment income (loss) $ 2.2 (0.8 ) $ (18.2 ) (1.2 ) Continued: Summarized financial information by business segment is as follows. Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2017 2016 2017 2016 Real Estate Services Asia Pacific Revenue $ 413.0 331.1 $ 1,095.4 916.9 Gross contract costs (103.3 ) (59.2 ) (272.5 ) (183.4 ) Total fee revenue 309.7 271.9 822.9 733.5 Operating expenses: Compensation, operating and administrative expenses 383.6 309.3 1,033.7 869.0 Depreciation and amortization 5.2 4.2 15.7 12.4 Total segment operating expenses 388.8 313.5 1,049.4 881.4 Gross contract costs (103.3 ) (59.2 ) (272.5 ) (183.4 ) Total fee-based segment operating expenses 285.5 254.3 776.9 698.0 Segment operating income $ 24.2 17.6 $ 46.0 35.5 Equity earnings 0.9 0.5 2.3 0.5 Total segment income $ 25.1 18.1 $ 48.3 36.0 LaSalle Revenue $ 102.1 80.3 $ 263.1 307.8 Operating expenses: Compensation, operating and administrative expenses 79.6 71.1 216.6 236.8 Depreciation and amortization 0.8 0.8 2.2 2.1 Total segment operating expenses 80.4 71.9 218.8 238.9 Segment operating income $ 21.7 8.4 $ 44.3 68.9 Equity earnings 11.6 4.9 29.9 26.5 Total segment income $ 33.3 13.3 $ 74.2 95.4 Segment Reconciling Items Total fee revenue $ 1,624.6 1,444.3 $ 4,517.2 3,907.8 Gross contract costs 315.3 258.0 868.6 735.5 Net non-cash MSR and mortgage banking derivative activity 7.1 2.9 11.1 2.3 Total revenue $ 1,947.0 1,705.2 $ 5,396.9 4,645.6 Total segment operating expenses before restructuring and acquisition charges 1,825.5 1,616.2 5,138.9 4,395.4 Operating income before restructuring and acquisition charges $ 121.5 89.0 $ 258.0 250.2 Restructuring and acquisition charges 3.4 18.0 13.3 35.9 Operating income $ 118.1 71.0 $ 244.7 214.3

Business Combinations, Goodwill

Business Combinations, Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2017
BUSINESS COMBINATIONS, GOODWILL AND OTHER INTANGIBLE ASSETS [Abstract]
Business Combinations, Goodwill and Other Intangible Assets	4. BUSINESS COMBINATIONS, GOODWILL AND OTHER INTANGIBLE ASSETS 2017 Business Combinations Activity During the nine months ended September 30, 2017 , we completed five new strategic acquisitions, as presented in the table below. These acquisitions reflect continued efforts to grow scale in key regional markets across various business lines. Acquired Company Quarter of Acquisition Country Primary Service Line Maloney Field Services Q1 Australia Capital Markets & Hotels Meridian Immobilier SA Q1 Switzerland Leasing Urbis Partners, LLC Q1 United States Leasing Zabel Property AG Q1 Germany Capital Markets & Hotels Integra Realty Resources - Orange County Q3 United States Advisory, Consulting and Other Aggregate terms of these acquisitions included: (1) cash paid at closing of $22.4 million (exclusive of $5.6 million in cash acquired), (2) guaranteed deferred consideration of $1.8 million subject only to the passage of time, and (3) contingent earn-out consideration of $11.5 million , which we will pay upon satisfaction of certain performance conditions and which we have initially recorded at their respective acquisition date fair value. A preliminary allocation of purchase consideration resulted in goodwill of $24.3 million , identifiable intangibles of $9.7 million , and other net assets (acquired assets less assumed liabilities) of $1.7 million . As of September 30, 2017 , we have not completed our analysis to assign fair values to all of the identifiable intangible and tangible assets acquired and, therefore, we may further refine the purchase price allocations for our 2017 acquisitions during their open measurement periods. During the nine months ended September 30, 2017 , we paid $41.2 million for deferred business acquisition and earn-out obligations for acquisitions completed in prior years. We also paid $2.4 million to acquire a portion of the redeemable noncontrolling interest related to our 2014 acquisition of Tenzing AB, a Swedish real estate services provider. 2016 Business Combination Activity During the nine months ended September 30, 2017 , we made adjustments to our preliminary allocation of the purchase consideration for certain acquisitions completed in 2016. These adjustments resulted in a $5.3 million increase to goodwill, which included a $1.9 million net working capital adjustment payment for a 2016 acquisition, and a $0.4 million reduction to identifiable intangibles. As of September 30, 2017 , we have not completed our analysis to assign fair values to all the identifiable intangible and tangible assets acquired and, therefore, we may further refine the purchase price allocations for our 2016 acquisitions with open measurement periods. Earn-Out Payments As of September 30, 2017 , we had the potential to make a maximum of $436.9 million (undiscounted) in earn-out payments on 56 completed acquisitions, subject to the achievement of certain performance criteria. We accrued $223.5 million , representing the fair value of these obligations, as of September 30, 2017 , which is included in Short-term earn-out liabilities and Long-term earn-out liabilities within our Condensed Consolidated Balance Sheet. Assuming the achievement of the applicable performance criteria, we anticipate making these earn-out payments over the next six years. As of December 31, 2016 , we had the potential to make a maximum of $435.0 million (undiscounted) in earn-out payments on 52 completed acquisitions, subject to the achievement of certain performance criteria. We accrued $229.6 million , representing the fair value of these obligations as of December 31, 2016 . Refer to Note 7, Fair Value Measurements, and Note 10, Restructuring and Acquisition Charges, for additional discussion of our earn-out liabilities. Goodwill and Other Intangible Assets Goodwill and unamortized intangibles of $3,008.7 million as of September 30, 2017 consisted of: (1) goodwill of $2,701.3 million , (2) identifiable intangibles of $298.6 million amortized over their remaining finite useful lives, and (3) $8.8 million of identifiable intangibles with indefinite useful lives that are not amortized. Significant portions of our goodwill and unamortized intangibles are denominated in currencies other than the U.S. dollar, which means a portion of the movements in the reported book value of these balances is attributable to movements in foreign currency exchange rates. The following tables detail, by reporting segment, movements in goodwill. Real Estate Services (in millions) Americas EMEA Asia Pacific LaSalle Consolidated Balance as of December 31, 2016 $ 1,406.1 851.7 306.1 15.4 $ 2,579.3 Additions, net of adjustments 5.2 17.9 6.5 — 29.6 Impact of exchange rate movements 0.9 80.5 10.0 1.0 92.4 Balance as of September 30, 2017 $ 1,412.2 950.1 322.6 16.4 $ 2,701.3 Real Estate Services (in millions) Americas EMEA Asia Pacific LaSalle Consolidated Balance as of December 31, 2015 $ 1,161.1 696.2 266.6 17.6 $ 2,141.5 Additions, net of adjustments 174.2 239.8 36.6 — 450.6 Impact of exchange rate movements 0.8 (50.8 ) 6.2 (1.5 ) (45.3 ) Balance as of September 30, 2016 $ 1,336.1 885.2 309.4 16.1 $ 2,546.8 The following tables detail, by reporting segment, movements in the gross carrying amount and accumulated amortization of our identifiable intangibles. MSRs Other Intangibles (in millions) Americas Americas EMEA Asia Pacific LaSalle Consolidated Gross Carrying Amount Balance as of December 31, 2016 $ 193.1 167.1 91.1 24.2 0.1 $ 475.6 Additions, net of adjustments (1) 50.7 0.4 3.1 5.8 — 60.0 Adjustment for fully amortized intangibles (12.5 ) (50.0 ) (7.7 ) (8.0 ) (0.1 ) (78.3 ) Impact of exchange rate movements — 0.2 7.6 1.3 — 9.1 Balance as of September 30, 2017 $ 231.3 117.7 94.1 23.3 — $ 466.4 Accumulated Amortization Balance as of December 31, 2016 $ (32.3 ) (98.7 ) (38.0 ) (11.5 ) (0.1 ) $ (180.6 ) Amortization, net (2) (29.8 ) (10.3 ) (11.2 ) (1.9 ) — (53.2 ) Adjustment for fully amortized intangibles 12.5 50.0 7.7 8.0 0.1 78.3 Impact of exchange rate movements — 0.3 (3.6 ) (0.2 ) — (3.5 ) Balance as of September 30, 2017 $ (49.6 ) (58.7 ) (45.1 ) (5.6 ) — $ (159.0 ) Net book value as of September 30, 2017 $ 181.7 59.0 49.0 17.7 — $ 307.4 (1) Included in this amount for MSRs was $7.7 million relating to prepayments/write-offs due to prepayments of sold warehouse receivables for which we retained the servicing rights. (2) Amortization of MSRs is included in Revenue within the Condensed Consolidated Statements of Comprehensive Income. MSRs Other Intangibles (in millions) Americas Americas EMEA Asia Pacific LaSalle Consolidated Gross Carrying Amount Balance as of December 31, 2015 $ 171.6 125.5 48.5 14.3 6.3 $ 366.2 Additions, net of adjustments 17.0 38.6 51.8 5.7 — 113.1 Impairments (1) — — — — (6.5 ) (6.5 ) Impact of exchange rate movements — (0.3 ) (4.7 ) 0.5 0.3 (4.2 ) Balance as of September 30, 2016 $ 188.6 163.8 95.6 20.5 0.1 $ 468.6 Accumulated Amortization Balance as of December 31, 2015 $ (8.6 ) (88.4 ) (32.6 ) (9.3 ) (0.1 ) $ (139.0 ) Amortization, net (2) (17.8 ) (7.7 ) (7.0 ) (1.3 ) — (33.8 ) Impact of exchange rate movements — 0.4 3.5 (0.2 ) — 3.7 Balance as of September 30, 2016 $ (26.4 ) (95.7 ) (36.1 ) (10.8 ) (0.1 ) $ (169.1 ) Net book value as of September 30, 2016 $ 162.2 68.1 59.5 9.7 — $ 299.5 (1) In the third quarter of 2016, we fully impaired an indefinite-lived intangible asset related to a 2011 acquisition of an Australian property fund management business. (2) Amortization of MSRs is included in Revenue within the Condensed Consolidated Statements of Comprehensive Income. The remaining estimated future amortization expense of MSRs and other identifiable intangible assets, by year, as of September 30, 2017 , is presented in the following table. (in millions) MSRs Other Intangibles Total 2017 (3 months) $ 7.7 11.9 $ 19.6 2018 30.0 24.2 54.2 2019 26.9 22.2 49.1 2020 24.2 19.5 43.7 2021 20.4 13.3 33.7 2022 17.4 13.5 30.9 Thereafter 55.1 12.3 67.4 Total $ 181.7 116.9 $ 298.6

Investments in Real Estate Vent

Investments in Real Estate Ventures	9 Months Ended
	Sep. 30, 2017
Equity Method Investments and Joint Ventures [Abstract]
Investments in Real Estate Ventures	5. INVESTMENTS IN REAL ESTATE VENTURES As of September 30, 2017 and December 31, 2016 , we had Investments in real estate ventures of $372.5 million and $355.4 million , respectively. Approximately 70% of our investments are in 46 separate property or commingled funds, where we co-invest alongside our clients and for which we also have an advisory agreement. Our investment ownership percentages in these funds generally range from less than 1% to 10% . The remaining 30% of our Investments in real estate ventures, as of September 30, 2017 , were attributable to investment vehicles that use our capital and outside capital primarily provided by institutional investors to invest in certain real estate ventures that own and operate real estate. Of our investments attributable to investment vehicles, the majority was invested in LaSalle Investment Company II ("LIC II"), in which we held an effective ownership interest of 48.78% . We have maximum potential unfunded commitments to direct investments or investment vehicles of $222.2 million as of September 30, 2017 , of which $65.4 million relates to our commitment to LIC II. We evaluate our less-than-wholly-owned investments to determine whether the underlying entities are classified as variable interest entities ("VIEs"); we assess each identified VIE to determine whether we are the primary beneficiary. We have determined that we are the primary beneficiary of certain VIEs and accordingly, we have consolidated such entities. The assets of the consolidated VIEs are available only for the settlement of the obligations of the respective entities and the mortgage loans of the consolidated VIEs are non-recourse to JLL. Summarized financial information for our consolidated VIEs is presented in the following tables. (in millions) September 30, 2017 December 31, 2016 Property and equipment, net $ 13.5 13.8 Investment in real estate ventures 9.1 10.3 Other current assets (1) 40.0 40.7 Total assets $ 62.6 64.8 Other current liabilities (1) $ 31.2 35.0 Mortgage indebtedness (included in Other liabilities) 9.3 9.7 Total liabilities 40.5 44.7 Members' equity (included in Noncontrolling interest) 22.1 20.1 Total liabilities and members' equity $ 62.6 64.8 (1) Balances primarily represent investment properties and their corresponding liabilities, classified as held for sale. Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2017 2016 2017 2016 Revenue $ 1.8 2.6 $ 4.4 5.6 Operating and other expenses (1.6 ) (3.7 ) (3.6 ) (5.7 ) Gain on sale of investment — — — 13.3 Net income $ 0.2 (1.1 ) $ 0.8 13.2 We allocate the members' equity and net income of the consolidated VIEs to the noncontrolling interest holders as Noncontrolling interest on our Condensed Consolidated Balance Sheets and as Net income attributable to noncontrolling interest in our Condensed Consolidated Statements of Comprehensive Income, respectively. Impairment There were no significant other-than-temporary impairment charges on Investments in real estate ventures for the three and nine months ended September 30, 2017 and 2016 , respectively. Fair Value We report a majority of our investments in real estate ventures at fair value. For such investments, we increase or decrease our investment each reporting period by the change in the fair value and we report these fair value adjustments in our Condensed Consolidated Statements of Comprehensive Income within Equity earnings from real estate ventures. The table below shows the movement in our investments in real estate ventures reported at fair value. (in millions) 2017 2016 Fair value investments as of January 1, $ 212.7 155.2 Investments 21.2 59.8 Distributions (22.5 ) (32.6 ) Change in fair value 17.9 14.2 Foreign currency translation adjustments, net 4.9 7.4 Fair value investments as of September 30, $ 234.2 204.0

Stock-based Compensation

Stock-based Compensation	9 Months Ended
	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-based Compensation	6. STOCK-BASED COMPENSATION Restricted Stock Unit Awards Along with cash-based salaries and performance-based annual cash incentive awards, restricted stock unit awards represent an important element of compensation to our employees. Restricted stock unit activity is presented in the following tables. Shares (thousands) Weighted Average Weighted Average Remaining (in years) Unvested as of June 30, 2017 775.9 $ 117.74 1.61 Granted 5.1 115.47 Vested (70.9 ) 112.64 Forfeited (0.8 ) 130.32 Unvested as of September 30, 2017 709.3 $ 118.22 1.43 Unvested shares expected to vest as of September 30, 2017 709.3 $ 118.22 1.43 Unvested as of June 30, 2016 817.3 $ 112.58 2.00 Granted 27.0 112.75 Vested (96.2 ) 101.71 Forfeited (2.4 ) 107.79 Unvested as of September 30, 2016 745.7 $ 114.00 1.91 Unvested shares expected to vest as of September 30, 2016 726.0 $ 114.10 1.92 Shares (thousands) Weighted Average Weighted Average Remaining (in years) Unvested as of December 31, 2016 750.9 $ 113.97 1.71 Granted 157.0 116.50 Vested (177.3 ) 99.24 Forfeited (21.3 ) 113.18 Unvested as of September 30, 2017 709.3 $ 118.22 1.43 Unvested shares expected to vest as of September 30, 2017 709.3 $ 118.22 1.43 Unvested as of December 31, 2015 706.0 $ 111.78 2.03 Granted 277.6 107.96 Vested (190.8 ) 96.51 Forfeited (47.1 ) 116.07 Unvested as of September 30, 2016 745.7 $ 114.00 1.91 Unvested shares expected to vest as of September 30, 2016 726.0 $ 114.10 1.92 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 September 30, 2017 , we had $25.1 million of unamortized deferred compensation related to unvested restricted stock units, which we anticipate recognizing over varying periods into 2020 .

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	7. FAIR VALUE MEASUREMENTS We measure certain assets and liabilities in accordance with ASC 820, Fair Value Measurements and Disclosures , which defines fair value as the price that would be received for an asset, or paid to transfer a liability, in an orderly transaction between market participants on the measurement date. In addition, it establishes a framework for measuring fair value according to the following three-tier fair value hierarchy: • Level 1 - Quoted prices for identical assets or liabilities in active markets accessible as of the measurement date; • Level 2 - Inputs, other than 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. We had no transfers among levels of the fair value hierarchy during the nine months ended September 30, 2017 and 2016 . Our policy is to recognize transfers at the end of quarterly reporting periods. Financial Instruments Our financial instruments include Cash and cash equivalents, Trade receivables, Notes and other receivables, Warehouse receivables, restricted cash, Accounts payable, Short-term borrowings, Warehouse facility, Credit facility, Long-term debt and foreign currency exchange contracts. The carrying amounts of Cash and cash equivalents, Trade receivables, Notes and other receivables, restricted cash, Accounts payable, and the Warehouse facility approximate their estimated fair values due to the short-term nature of these instruments. The carrying values of our Credit facility and Short-term borrowings approximate their estimated fair values given the variable interest rate terms and market spreads. We estimated the fair value of our Long-term debt as $704.5 million and $284.9 million as of September 30, 2017 and December 31, 2016 , respectively, using dealer quotes that are Level 2 inputs in the fair value hierarchy. The carrying value of our Long-term debt was $684.2 million and $272.7 million as of September 30, 2017 and December 31, 2016 , respectively, and included debt issuance costs of $4.5 million and $2.3 million , respectively. Investments in Real Estate Ventures at Fair Value - Net Asset Value ("NAV") We report a majority of our investments in real estate ventures at fair value. For such investments, we increase or decrease our investment each reporting period by the change in the fair value and we report these fair value adjustments in our Condensed Consolidated Statements of Comprehensive Income within Equity earnings from real estate ventures. Of our investments reported at fair value, we generally estimate the fair value using the NAV per share (or its equivalent) our investees provide. 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. We did not consider adjustments to NAV estimates provided by investees, including adjustments for any restrictions to the transferability of ownership interests embedded within investment agreements to which we are a party, to be necessary based upon (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. As of September 30, 2017 and December 31, 2016 , investments in real estate ventures at fair value using NAV were $189.2 million and $169.0 million , respectively. As these investments are not required to be classified in the fair value hierarchy, they have been excluded from the following table. Recurring Fair Value Measurements The following table categorizes by level in the fair value hierarchy the estimated fair value of our assets and liabilities measured at fair value on a recurring basis. September 30, 2017 December 31, 2016 (in millions) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Assets Investments in real estate ventures - fair value $ 45.0 — — 43.7 — — Foreign currency forward contracts receivable — 3.0 — — 8.7 — Warehouse receivables — 337.8 — n/a n/a n/a Deferred compensation plan assets — 218.5 — — 173.0 — Mortgage banking derivative assets — — 22.8 — — 31.4 Total assets at fair value $ 45.0 559.3 22.8 43.7 181.7 31.4 Liabilities Foreign currency forward contracts payable $ — 11.6 — — 22.9 — Deferred compensation plan liabilities — 208.8 — 169.5 — Earn-out liabilities — — 223.5 — — 229.6 Mortgage banking derivative liabilities — — 11.3 — — 15.9 Total liabilities at fair value $ — 220.4 234.8 — 192.4 245.5 Investments in Real Estate Ventures We classify one investment as Level 1 in the fair value hierarchy as quoted prices are readily available. We increase or decrease our investment each reporting period by the change in the fair value of the investment. We report these fair value adjustments in our Condensed Consolidated Statements of Comprehensive Income within Equity earnings from real estate ventures. 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. These contracts are on our Condensed Consolidated Balance Sheets as current assets and current liabilities. We determine the fair values of these contracts based on current market rates. The inputs for these valuations are Level 2 inputs in the fair value hierarchy. As of September 30, 2017 and December 31, 2016 , these contracts had a gross notional value of $2.00 billion ( $1.41 billion on a net basis) and $1.90 billion ( $1.39 billion on a net basis), respectively. The revaluations of foreign currency forward contracts resulted in a net loss of $8.6 million as of September 30, 2017 and no net gain as of September 30, 2016 . We recognize gains and losses from revaluation of these contracts as a component of Operating, administrative and other expense. They are offset by the gains and losses we recognize on the revaluation of intercompany loans and other foreign currency balances. The impact to net income was not significant for either of the three or nine months ended September 30, 2017 or 2016 . We record the asset and liability positions for our foreign currency forward contracts based on the net payable or net receivable position with the financial institutions from which we purchase these contracts. The $3.0 million asset as of September 30, 2017 , was composed of gross contracts with receivable positions of $5.2 million and payable positions of $2.2 million . The $11.6 million liability as of September 30, 2017 , was composed of gross contracts with receivable positions of $1.4 million and payable positions of $13.0 million . As of December 31, 2016 , the $8.7 million asset was composed of gross contracts with receivable positions of $8.9 million and payable positions of $0.2 million . The $22.9 million liability as of December 31, 2016 , was composed of gross contracts with receivable positions of $1.3 million and payable positions of $24.2 million . Warehouse Receivables The fair value of the Warehouse receivables is based on already locked-in security-buy prices. See Note 1, Interim Information, for additional discussion on our election of the fair value option for Warehouse receivables. As of September 30, 2017 and December 31, 2016 , all of our Warehouse receivables included in our Condensed Consolidated Balance Sheet were under commitment to be purchased by government-sponsored enterprises ("GSEs") or by a qualifying investor as part of a U.S. government or GSE mortgage-backed security program. The Warehouse receivables are classified as Level 2 in the fair value hierarchy as all significant inputs are readily observable. 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 as of the balance sheet date, and we adjust the deferred compensation obligation 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. We recorded this plan on our Condensed Consolidated Balance Sheet as of September 30, 2017 , as Deferred compensation plan assets of $218.5 million , long-term deferred compensation plan liabilities of $208.8 million , included in Deferred compensation, and as a reduction of equity, Shares held in trust, of $5.8 million . We recorded this plan on our Condensed Consolidated Balance Sheet as of December 31, 2016 , as Deferred compensation plan assets of $173.0 million , long-term deferred compensation plan liabilities of $169.5 million , included in Deferred compensation, and as a reduction of equity, Shares held in trust, of $6.0 million . Earn-Out Liabilities We classify our Earn-out liabilities within Level 3 in the fair value hierarchy because the inputs we use to develop the estimated fair value include unobservable inputs. We base the fair value of our Earn-out liabilities on the present value of probability-weighted future cash flows related to the earn-out performance criteria on each reporting date. We determine the probability of achievement we assign to the performance criteria based on the due diligence we performed at the time of acquisition as well as actual performance achieved subsequent to acquisition. An increase to the probability of achievement would result in a higher fair value measurement. See Note 4, Business Combinations, Goodwill and Intangibles, for additional discussion of our Earn-out liabilities. Mortgage Banking Derivatives The fair value of our rate lock commitments to prospective borrowers and the related inputs primarily include, as applicable, the expected net cash flows associated with servicing the loan and the effects of interest rate movements between the date of the interest rate lock commitment ("IRLC") and the balance sheet date based on applicable published U.S. Treasury rates. The fair value of our forward sales contracts to prospective investors considers the market price movement of a similar security between the trade date and the balance sheet date. The market price changes are multiplied by the notional amount of the forward sales contracts to measure the fair value. Both the rate lock commitments to prospective borrowers and the forward sale contracts to prospective investors are undesignated derivatives and considered Level 3 valuations due to significant unobservable inputs related to counterparty credit risk. An increase in counterparty credit risk assumptions would result in a lower fair value measurement. The fair valuation is determined using discounted cash flow techniques, and the derivatives are marked to fair value through Revenue in the Condensed Consolidated Statements on Comprehensive Income. The tables below present a reconciliation for assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3). (in millions) Balance as of June 30, 2017 Net change in fair value Foreign currency translation adjustments Purchases / Additions Settlements Balance as of September 30, 2017 Mortgage banking derivative assets and liabilities, net $ 14.1 3.4 — 25.5 (31.5 ) $ 11.5 Earn-out liabilities $ 225.6 (0.6 ) 2.9 0.7 (5.1 ) $ 223.5 (in millions) Balance as of June 30, 2016 Net change in fair value Foreign currency translation adjustments Purchases / Additions Settlements Balance as of September 30, 2016 Earn-out liabilities $ 169.6 (0.6 ) 0.2 43.3 (2.4 ) $ 210.1 (in millions) Balance as of December 31, 2016 Net change in fair value Foreign currency translation adjustments Purchases / Additions Settlements Balance as of September 30, 2017 Mortgage banking derivative assets and liabilities, net $ 15.5 11.8 — 56.6 (72.4 ) $ 11.5 Earn-out liabilities 229.6 (2.7 ) 7.4 11.4 (22.2 ) 223.5 (in millions) Balance as of December 31, 2015 Net change in fair value Foreign currency translation adjustments Purchases / Additions Settlements Balance as of September 30, 2016 Earn-out liabilities $ 127.3 (1.5 ) (1.0 ) 90.5 (5.2 ) $ 210.1 Net change in fair value, included in the tables above, is reported in Net income as follows. Category of Assets/Liabilities using Unobservable Inputs Condensed Consolidated Statements of Comprehensive Income Account Caption Earn-out liabilities (Short-term and Long-term) Restructuring and acquisition charges Other current assets - Mortgage banking derivative assets Revenue Other current liabilities - Mortgage banking derivative liabilities Revenue 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 be unable 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 significant investment-level impairment losses during either of the three or nine months ended September 30, 2017 or 2016 . See Note 5, Investments in Real Estate Ventures, for additional information, including information related to impairment charges recorded at the investee level.

Debt

Debt	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Debt	8. DEBT Short-term borrowings and long-term debt obligations are composed of the following. (in millions) September 30, 2017 December 31, 2016 Short-term borrowings: Local overdraft facilities $ 28.2 31.6 Other short-term borrowings 36.0 57.9 Total short-term borrowings $ 64.2 89.5 Credit facility, net of debt issuance costs of $16.4 and $19.6 433.6 905.4 Long-term senior notes, 4.4%, face amount of $275.0, due November 2022, net of debt issuance costs of $2.0 and $2.3 273.0 272.7 Long-term senior notes, 1.96%, face amount of €175.0, due June 2027, net of debt issuance costs of $1.3 and $0.0 205.6 — Long-term senior notes, 2.21%, face amount of €175.0, due June 2029, net of debt issuance costs of $1.2 and $0.0 205.6 — Total debt $ 1,182.0 1,267.6 Credit Facility We have a $2.75 billion unsecured revolving credit facility (the "Facility") that matures on June 21, 2021 . In addition to outstanding borrowings under the Facility presented in the above table, we had outstanding letters of credit under the Facility of $12.0 million and $18.2 million as of September 30, 2017 and December 31, 2016 , respectively. The average outstanding borrowings under the Facility were $712.3 million and $1,211.3 million during the three months ended September 30, 2017 and 2016 , respectively, and $1,042.7 million and $904.2 million during the nine months ended September 30, 2017 and 2016 , respectively. The pricing on the Facility ranges from LIBOR plus 0.95% to 2.05% , with pricing as of September 30, 2017 , at LIBOR plus 1.25% . The effective interest rates on our Facility were 2.3% and 1.4% during the three months ended September 30, 2017 and 2016 , respectively, and 2.0% and 1.4% during the nine months ended September 30, 2017 and 2016 , respectively. We will continue to use the Facility for, but not limited to, business acquisitions, working capital needs (including payment of accrued incentive compensation), co-investment activities, dividend payments, share repurchases and capital expenditures. Short-Term Borrowings and Long-Term Debt In addition to our Facility, we have the capacity to borrow up to an additional $97.2 million under local overdraft facilities. Amounts outstanding are presented in the debt table presented above. On June 29, 2017, we issued and sold an aggregate principal amount of € 350.0 million of senior unsecured notes ("Euro Notes") as a private placement to certain institutional investors in an offering exempt from the registration requirements of the Securities Act of 1933, as amended. The fixed-rate Euro Notes have 10-year and 12-year maturities as reported in the table above. The proceeds, net of debt issuance costs, were $393.2 million , using June 29, 2017 exchange rates, and were used to reduce outstanding borrowings on our Facility. The Euro Notes are unsecured obligations and rank equally in right of payment with all of our existing and future unsubordinated indebtedness, including our guarantee under the Facility. As of September 30, 2017 , our issuer and senior unsecured ratings are investment grade: BBB (stable outlook) from Standard & Poor’s Ratings Services and Baa1 (stable outlook) from Moody’s Investors Service, Inc. Covenants Our Facility and senior notes are subject to customary financial and other covenants, including cash interest coverage ratios and leverage ratios, as well as event of default conditions. We remained in compliance with all covenants as of September 30, 2017 . Warehouse Facilities September 30, 2017 December 31, 2016 ($ in millions) Outstanding Balance Maximum Capacity Outstanding Balance Maximum Capacity Warehouse Facilities: LIBOR plus 1.4%, expires September 24, 2018 1 $ 179.0 375.0 135.2 275.0 LIBOR plus 1.35%, expires September 29, 2018 2 122.5 375.0 314.7 650.0 LIBOR plus 1.5%, expires August 31, 2018 — 100.0 15.0 100.0 Fannie Mae ASAP program, LIBOR plus 1.30% to 1.45% 32.0 n/a 116.1 n/a Gross warehouse facilities $ 333.5 850.0 581.0 1,025.0 Debt issuance costs (1.6 ) n/a (0.9 ) n/a Total warehouse facilities $ 331.9 850.0 580.1 1,025.0 1 In the third quarter of 2017, we extended the Warehouse facility; the facility originally had a maximum capacity of $275.0 million and a maturity date of September 25, 2017. 2 In the third quarter of 2017, we extended the Warehouse facility; the facility originally had a maximum capacity of $250.0 million and a maturity date of September 22, 2017. We have lines of credit established for the sole purpose of funding our Warehouse receivables. These lines of credit exist with financial institutions and are secured by the related warehouse receivables. Pursuant to these warehouse facilities, we are required to comply with certain financial covenants regarding (1) minimum net worth, (2) minimum servicing-related loans, and (3) minimum adjusted leverage ratios. We remained in compliance with all covenants under our Warehouse facilities as of September 30, 2017 . As a supplement to our lines of credit, we have an uncommitted facility with Fannie Mae under its As Soon As Pooled ("ASAP") funding program. After origination, we sell certain warehouse receivables to Fannie Mae; the proceeds are used to repay the original lines of credit used to fund the loan. The ASAP funding program requires us to repurchase these loans, generally within 45 days, followed by an immediate, ultimate, sale back to Fannie Mae. The difference between the price paid upon the original sale to Fannie Mae and the ultimate sale reflects a discount representative of borrowing costs.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	9. 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 we cannot determine the ultimate liability for these matters, 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. We contract third-party insurance companies to provide coverage of risk in excess of this amount. When a potential loss event occurs, we estimate the ultimate cost of the claim and accrue the amount in Other current and long-term liabilities on our Condensed Consolidated Balance Sheets when probable and estimable. In addition, we have established receivables from third-party insurance providers for claim amounts in excess of the risk retained by our captive insurance company. In total, these receivables were $2.4 million and $1.3 million as of September 30, 2017 and December 31, 2016 , respectively, and are included in Notes and other receivables and Long-term receivables on our Condensed Consolidated Balance Sheets. The following table shows the professional indemnity accrual activity and related payments. (in millions) December 31, 2016 $ 7.3 New claims 0.7 Prior year claims adjustments 1.5 Claims paid (3.0 ) September 30, 2017 $ 6.5 December 31, 2015 $ 19.2 New claims 7.5 Prior year claims adjustments (1.6 ) Claims paid (15.2 ) September 30, 2016 $ 9.9 As a lender in the Fannie Mae Delegated Underwriting and Servicing ("DUS") program, we retain a portion of the risk of loss for loans we originate and sell under the DUS program. The net loss on defaulted loans are shared with Fannie Mae based upon established loss-sharing ratios. Generally, our share of losses is capped at 20% of the principal balance of the mortgage at origination. As of September 30, 2017 and December 31, 2016 , we had loans, funded and sold, subject to such loss-sharing arrangements with an aggregate unpaid principal balance of $7.6 billion and $5.8 billion , respectively. For all DUS program loans with loss-sharing obligations, we record a loan loss accrual equal to the estimated fair value of the guarantee obligations undertaken upon sale of the loan, which reduces our gain on sale of the loan. Subsequently, this accrual is amortized over the life of the loan and recorded as an increase in Revenue on the Statements of Comprehensive Income. At least semi-annually, we perform an analysis of the servicing portfolio with loss-sharing obligations to determine estimated probable losses. If estimated probable losses exceed the existing unamortized guarantee obligation, we record an expense to increase the loan loss accrual for this difference. As of September 30, 2017 and December 31, 2016 , loan loss accruals were $14.7 million and $12.2 million , respectively, and are included in Other liabilities on our Condensed Consolidated Balance Sheets.

Restructuring and Acquisition C

Restructuring and Acquisition Charges	9 Months Ended
	Sep. 30, 2017
Restructuring and Related Activities [Abstract]
Restructuring and acquisition charges	10. RESTRUCTURING AND ACQUISITION CHARGES For the three and nine months ended September 30, 2017 , we recognized Restructuring and acquisition charges of $3.4 million and $13.3 million , respectively. For the three and nine months ended September 30, 2016 , we recognized Restructuring and acquisition charges of $18.0 million and $35.9 million , respectively. For the three and nine months ended September 30, 2017 , we recognized $0.6 million and $2.7 million related to net decreases to earn-out liabilities that arose from prior-period acquisition activity, respectively. For the three and nine months ended September 30, 2016 , we recognized $1.7 million and $1.5 million related to net decreases to earn-out liabilities that arose from prior-period acquisition activity. For the three and nine months ended September 30, 2016 , we recognized a $6.5 million charge related to the write-off of an indefinite-lived intangible asset. In addition, there was a $2.3 million loss for the three months ended September 30, 2016 , included in Restructuring and acquisition charges for a foreign currency derivative relating to an acquisition payment which fully offset the corresponding $2.3 million gain recognized in the second quarter of 2016 . In all periods, the remaining charges primarily consist of (1) severance and employment-related charges, including those related to external service providers, incurred in conjunction with a structural business shift, which can be represented by a notable change in headcount, change in leadership, or transformation of business processes, (2) lease exit charges, and (3) other acquisition and integration-related charges. The following tables show the restructuring and acquisition accrual activity and related payments, which are exclusive of the adjustments individually noted above. (in millions) Severance & Employment-Related Lease Exit Other Acquisition Total December 31, 2016 $ 19.7 5.5 5.8 31.0 Accruals 10.6 0.7 4.7 16.0 Payments made (19.0 ) (0.6 ) (6.5 ) (26.1 ) September 30, 2017 $ 11.3 5.6 4.0 20.9 (in millions) Severance & Employment-Related Lease Other Total December 31, 2015 $ 2.7 5.7 0.2 8.6 Accruals 16.0 — 14.9 30.9 Payments made (5.1 ) (0.4 ) (11.4 ) (16.9 ) September 30, 2016 $ 13.6 5.3 3.7 22.6 We expect the majority of accrued severance and other accrued acquisition costs as of September 30, 2017 will be paid during the next twelve months. Lease exit payments depend on the terms of various leases, which extend as far out as 2022.

Noncontrolling Interest

Noncontrolling Interest	9 Months Ended
	Sep. 30, 2017
Noncontrolling Interest [Abstract]
Noncontrolling Interest Disclosure [Text Block]	11. NONCONTROLLING INTEREST We reflect changes in amounts attributable to noncontrolling interests in the Condensed Consolidated Statement of Changes in Equity. We present changes in amounts attributable to redeemable noncontrolling interests in the following table. (in millions) Redeemable noncontrolling interests as of December 31, 2016 $ 6.8 Acquisition of redeemable noncontrolling interest (1) (3.5 ) Net loss (0.1 ) Impact of exchange rate movements 0.7 Redeemable noncontrolling interests as of September 30, 2017 $ 3.9 (1) Reflects our redemption of a portion of the redeemable noncontrolling interest related to our 2014 acquisition of Tenzing AB and includes $1.1 million representing the difference between the redemption value and the carrying value of the acquired interest.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss) by Component	9 Months Ended
	Sep. 30, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss) by Component	12. ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) BY COMPONENT The tables below present the changes in Accumulated other comprehensive income (loss) by component. (in millions) Pension and postretirement benefit Cumulative foreign currency translation adjustment Total Balance as of June 30, 2017 $ (67.9 ) (353.3 ) (421.2 ) Other comprehensive income before reclassification — 45.6 45.6 Amounts reclassified from AOCI after tax expense of $0.3, $ - and $0.3 1.2 — 1.2 Other comprehensive income after tax expense of $0.3, $ - and $0.3 1.2 45.6 46.8 Balance as of September 30, 2017 $ (66.7 ) (307.7 ) (374.4 ) (in millions) Pension and postretirement benefit Cumulative foreign currency translation adjustment Total Balance as of June 30, 2016 $ (35.8 ) (336.4 ) (372.2 ) Other comprehensive loss before reclassification — (15.0 ) (15.0 ) Amounts reclassified from AOCI after tax expense of $ - , $ - and $ - — — — Other comprehensive loss after tax expense of $ - , $ - and $ - — (15.0 ) (15.0 ) Balance as of September 30, 2016 $ (35.8 ) (351.4 ) (387.2 ) (in millions) Pension and postretirement benefit Cumulative foreign currency translation adjustment Total Balance as of December 31, 2016 $ (68.7 ) (482.4 ) (551.1 ) Other comprehensive income before reclassification — 174.7 174.7 Amounts reclassified from AOCI after tax expense of $0.5, $ - and $0.5 2.0 — 2.0 Other comprehensive income after tax expense of $0.5, $ - and $0.5 2.0 174.7 176.7 Balance as of September 30, 2017 $ (66.7 ) (307.7 ) (374.4 ) (in millions) Pension and postretirement benefit Cumulative foreign currency translation adjustment Total Balance as of December 31, 2015 $ (35.8 ) (300.5 ) (336.3 ) Other comprehensive loss before reclassification — (50.9 ) (50.9 ) Amounts reclassified from AOCI after tax expense of $ - , $ - and $ - — — — Other comprehensive loss after tax expense of $ - , $ - and $ - — (50.9 ) (50.9 ) Balance as of September 30, 2016 $ (35.8 ) (351.4 ) (387.2 ) For pension and postretirement benefits, we report amounts reclassified from Accumulated other comprehensive income (loss) in Compensation and benefits within the Condensed Consolidated Statements of Comprehensive Income.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2017
Subsequent Event [Line Items]
Subsequent Events	13. SUBSEQUENT EVENTS On November 6, 2017 , we announced a semi-annual cash dividend of $0.37 per share of common stock. The dividend payment will be made on December 15, 2017 , to holders of record at the close of business on November 16, 2017 . A dividend-equivalent in the same per share amount will also be paid simultaneously on outstanding but unvested shares of eligible restricted stock units granted under the Company's Stock Award and Incentive Plan.

New Accounting Standards New 21

New Accounting Standards New Accounting Standards (Policies)	9 Months Ended
	Sep. 30, 2017
Text Block [Abstract]
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	2. NEW ACCOUNTING STANDARDS Recently adopted accounting guidance Effective January 1, 2017, we adopted Accounting Standards Update ("ASU") No. 2016-09, Improvements to Employee Share-Based Payment Accounting , which was intended to simplify several aspects of the accounting for employee share-based payment transactions, including the accounting for income taxes, forfeitures, and statutory tax withholding requirements, as well as classification in the statement of cash flows. One primary effect of adoption was our election to account for forfeitures as they occur, rather than estimate forfeitures in our determination of periodic compensation cost; we adopted this portion of the standard on a modified retrospective basis. The second primary effect of adoption was the recognition of excess tax benefits in our provision for income taxes, rather than Additional paid-in capital, which also results in reclassification of cash flows related to excess tax benefits from a financing activity to an operating activity on the statement of cash flows for periods beginning January 1, 2017; we adopted this portion of the standard on a prospective basis with the effect of adoption reflected for the interim periods beginning this year. As a result of the adoption, we recorded a $1.3 million cumulative-effect decrease to beginning retained earnings to recognize the impact of share-based compensation expense previously estimated to be forfeited; there was no material impact to our provision for income taxes in the nine months ended September 30, 2017 . Recently issued accounting guidance, not yet adopted In March 2017, the FASB issued ASU No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Post-retirement Benefit Cost (Topic 715) , which amends the requirements for presentation of service costs and other components of net benefit costs on the Income Statement. This ASU is effective for interim and annual periods beginning after December 15, 2017, with early adoption permitted. We do not believe this guidance will have a material impact on our financial statements and related disclosures. In January 2017, the FASB issued ASU No. 2017-04, Simplifying the Test for Goodwill Impairment , which eliminates Step 2 from the goodwill impairment test. The annual goodwill impairment test will require companies to compare the fair value of a reporting unit with its carrying amount and recognize an impairment charge when the carrying amount exceeds the fair value of the reporting unit. This ASU is effective for annual and interim goodwill impairment tests beginning after December 15, 2019, with early adoption permitted. We do not believe this guidance will have a material impact on our financial statements and related disclosures. In August 2016, the FASB issued ASU No. 2016-15, Classification of Certain Cash Receipts and Cash Payments , which addresses appropriate presentation and classification of certain cash receipts and cash payments within the statement of cash flows under Accounting Standards Codification ("ASC") Topic 230, Statement of Cash Flows . Specifically, this ASU provides clarification guidance on eight cash flow issues intended to improve comparability across financial statements. This ASU is effective for annual and interim periods beginning after December 15, 2017, with early adoption permitted. We do not believe this guidance will have a material impact on our financial statements and related disclosures. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326) , which creates a new framework to evaluate financial instruments, such as trade receivables, for expected credit losses. This new framework replaces the existing incurred loss approach and is expected to result in more timely recognition of credit losses. ASU No. 2016-13 is effective for annual and interim periods beginning after December 15, 2019 and early adoption is not permitted until years beginning after December 15, 2018. We are evaluating the effect this guidance will have on our financial statements and related disclosures. In March 2016, the FASB issued ASU No. 2016-08, Principal versus Agent Considerations (Reporting Revenue Gross versus Net) , which clarifies the implementation guidance on principal versus agent considerations and together with ASU No. 2014-09 (collectively the "ASUs"), as discussed below, amends and comprises ASC Topic 606 , Revenue from Contracts with Customers . In May 2014, the FASB issued 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. These ASUs, and other related ASUs, will replace most existing revenue recognition guidance in U.S. generally accepted accounting principles ("U.S. GAAP") when effective. The final standard is effective for annual and interim periods in fiscal years beginning after December 15, 2017, with early adoption permitted for annual and interim periods in fiscal years beginning after December 15, 2016. We plan to apply the full retrospective approach to adopt ASC Topic 606. Based upon analyses performed, we anticipate ASC Topic 606 will result in an acceleration of the timing of revenue recognition for certain transaction commissions and advisory services. These items include variable consideration or other aspects, such as contingencies, that preclude revenue recognition contemporaneous with the satisfaction of our performance obligations within the existing revenue recognition framework. We do not expect the acceleration of the timing of revenue recognition to have a material impact to our Consolidated Financial Statements. In addition, we anticipate implementation of the updated principal versus agent considerations in ASC Topic 606 will result in a significant increase to the proportion of our Property & Facility Management and Project & Development Services contracts accounted for on a gross basis. Under the legacy principal versus agent framework, our evaluations for presentation of a service contract contemplated both performance and payment risk. Contractual provisions with clients and vendors, such as “pay-when-paid”, that substantially mitigate payment risk to us with respect to on-site personnel and other expenses incurred on our clients’ behalf have historically resulted in the majority of our service contracts being accounted for on a net basis. However, within ASC Topic 606, payment risk is not an evaluation factor; instead, control of the service before transfer to the customer is the focal point of principal versus agent assessments. Within certain Property & Facility Management and Project & Development Services contracts, we have concluded that we control the services provided by a third party on behalf of clients. Therefore upon adoption of ASC Topic 606, for these service contracts, we will present the expenses incurred on behalf of clients along with the corresponding reimbursement revenue on a gross basis. Based upon evaluations which are ongoing, we estimate our application of the full retrospective approach will result in our full-year 2016 Consolidated Statements of Comprehensive Income reflecting approximately $5.5 billion to $6.5 billion of additional Revenue and an equal amount of Operating expenses. The estimated increase is anticipated to be most impacted by service contracts in the U.S. We expect the impact for 2017 to be generally consistent with 2016; however, we have not yet completed these assessments. We do not anticipate a material impact to our other revenue streams beyond what is discussed above. We expect the adoption of ASC Topic 606 to result in a material increase to total assets and total liabilities to reflect (i) contract assets and accrued commissions payable recognized upon acceleration of the timing of revenue recognition for certain transaction commissions and advisory services and (ii) nearly balanced receivables and payables relating to Property & Facility Management and Project & Development Services contracts to be reported on a gross basis. Our assessment with respect to the quantitative impact of ASC Topic 606 on our Consolidated Balance Sheets is ongoing. Finally, we expect the adoption of ASC Topic 606 to have a notable increase to the level of detail provided by our disclosures, including further disaggregation of revenue, quantitative and qualitative information about performance obligations, as well as additional balance sheet disclosures. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) , which increases transparency and comparability by requiring the recognition of lease assets and lease liabilities on the balance sheet as well as requiring the disclosure of key information about leasing arrangements. This ASU is effective for annual and interim periods beginning after December 15, 2018, with early adoption permitted. We anticipate the adoption of this ASU will result in an increase to the Condensed Consolidated Balance Sheet to reflect right-of-use assets and lease liabilities primarily associated with our office leases around the world. However, we have not yet quantified this impact nor the impact associated with non-real estate leases. We continue to evaluate any other effect the guidance will have on our financial statements and related disclosures.

Business Segments (Tables)

Business Segments (Tables)	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Summarized Unaudited Financial Information by Business Segments	Summarized financial information by business segment is as follows. Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2017 2016 2017 2016 Real Estate Services Americas Revenue $ 796.7 771.1 $ 2,311.3 2,047.5 Gross contract costs (40.4 ) (52.6 ) (131.4 ) (144.8 ) Net non-cash MSR and mortgage banking derivative activity (7.1 ) (2.9 ) (11.1 ) (2.3 ) Total fee revenue 749.2 715.6 2,168.8 1,900.4 Operating expenses: Compensation, operating and administrative expenses 699.1 686.0 2,054.0 1,842.2 Depreciation and amortization 24.2 21.3 71.4 58.4 Total segment operating expenses 723.3 707.3 2,125.4 1,900.6 Gross contract costs (40.4 ) (52.6 ) (131.4 ) (144.8 ) Total fee-based segment operating expenses 682.9 654.7 1,994.0 1,755.8 Segment operating income $ 73.4 63.8 $ 185.9 146.9 Equity earnings 0.1 0.1 0.5 0.8 Total segment income $ 73.5 63.9 $ 186.4 147.7 EMEA Revenue $ 635.2 522.7 $ 1,727.1 1,373.4 Gross contract costs (171.6 ) (146.2 ) (464.7 ) (407.3 ) Total fee revenue 463.6 376.5 1,262.4 966.1 Operating expenses: Compensation, operating and administrative expenses 621.4 513.9 1,712.3 1,348.9 Depreciation and amortization 11.6 9.6 33.0 25.6 Total segment operating expenses 633.0 523.5 1,745.3 1,374.5 Gross contract costs (171.6 ) (146.2 ) (464.7 ) (407.3 ) Total fee-based segment operating expenses 461.4 377.3 1,280.6 967.2 Segment operating income (loss) $ 2.2 (0.8 ) $ (18.2 ) (1.1 ) Equity losses — — — (0.1 ) Total segment income (loss) $ 2.2 (0.8 ) $ (18.2 ) (1.2 ) Continued: Summarized financial information by business segment is as follows. Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2017 2016 2017 2016 Real Estate Services Asia Pacific Revenue $ 413.0 331.1 $ 1,095.4 916.9 Gross contract costs (103.3 ) (59.2 ) (272.5 ) (183.4 ) Total fee revenue 309.7 271.9 822.9 733.5 Operating expenses: Compensation, operating and administrative expenses 383.6 309.3 1,033.7 869.0 Depreciation and amortization 5.2 4.2 15.7 12.4 Total segment operating expenses 388.8 313.5 1,049.4 881.4 Gross contract costs (103.3 ) (59.2 ) (272.5 ) (183.4 ) Total fee-based segment operating expenses 285.5 254.3 776.9 698.0 Segment operating income $ 24.2 17.6 $ 46.0 35.5 Equity earnings 0.9 0.5 2.3 0.5 Total segment income $ 25.1 18.1 $ 48.3 36.0 LaSalle Revenue $ 102.1 80.3 $ 263.1 307.8 Operating expenses: Compensation, operating and administrative expenses 79.6 71.1 216.6 236.8 Depreciation and amortization 0.8 0.8 2.2 2.1 Total segment operating expenses 80.4 71.9 218.8 238.9 Segment operating income $ 21.7 8.4 $ 44.3 68.9 Equity earnings 11.6 4.9 29.9 26.5 Total segment income $ 33.3 13.3 $ 74.2 95.4 Segment Reconciling Items Total fee revenue $ 1,624.6 1,444.3 $ 4,517.2 3,907.8 Gross contract costs 315.3 258.0 868.6 735.5 Net non-cash MSR and mortgage banking derivative activity 7.1 2.9 11.1 2.3 Total revenue $ 1,947.0 1,705.2 $ 5,396.9 4,645.6 Total segment operating expenses before restructuring and acquisition charges 1,825.5 1,616.2 5,138.9 4,395.4 Operating income before restructuring and acquisition charges $ 121.5 89.0 $ 258.0 250.2 Restructuring and acquisition charges 3.4 18.0 13.3 35.9 Operating income $ 118.1 71.0 $ 244.7 214.3

Business Combinations, Goodwi23

Business Combinations, Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2017
BUSINESS COMBINATIONS, GOODWILL AND OTHER INTANGIBLE ASSETS [Abstract]
Movements in Goodwill by Reporting Segment	The following tables detail, by reporting segment, movements in goodwill. Real Estate Services (in millions) Americas EMEA Asia Pacific LaSalle Consolidated Balance as of December 31, 2016 $ 1,406.1 851.7 306.1 15.4 $ 2,579.3 Additions, net of adjustments 5.2 17.9 6.5 — 29.6 Impact of exchange rate movements 0.9 80.5 10.0 1.0 92.4 Balance as of September 30, 2017 $ 1,412.2 950.1 322.6 16.4 $ 2,701.3 Real Estate Services (in millions) Americas EMEA Asia Pacific LaSalle Consolidated Balance as of December 31, 2015 $ 1,161.1 696.2 266.6 17.6 $ 2,141.5 Additions, net of adjustments 174.2 239.8 36.6 — 450.6 Impact of exchange rate movements 0.8 (50.8 ) 6.2 (1.5 ) (45.3 ) Balance as of September 30, 2016 $ 1,336.1 885.2 309.4 16.1 $ 2,546.8
Movements in Gross Carrying Amount and Accumulated Amortization of Finite-Lived Intangible Assets	The following tables detail, by reporting segment, movements in the gross carrying amount and accumulated amortization of our identifiable intangibles. MSRs Other Intangibles (in millions) Americas Americas EMEA Asia Pacific LaSalle Consolidated Gross Carrying Amount Balance as of December 31, 2016 $ 193.1 167.1 91.1 24.2 0.1 $ 475.6 Additions, net of adjustments (1) 50.7 0.4 3.1 5.8 — 60.0 Adjustment for fully amortized intangibles (12.5 ) (50.0 ) (7.7 ) (8.0 ) (0.1 ) (78.3 ) Impact of exchange rate movements — 0.2 7.6 1.3 — 9.1 Balance as of September 30, 2017 $ 231.3 117.7 94.1 23.3 — $ 466.4 Accumulated Amortization Balance as of December 31, 2016 $ (32.3 ) (98.7 ) (38.0 ) (11.5 ) (0.1 ) $ (180.6 ) Amortization, net (2) (29.8 ) (10.3 ) (11.2 ) (1.9 ) — (53.2 ) Adjustment for fully amortized intangibles 12.5 50.0 7.7 8.0 0.1 78.3 Impact of exchange rate movements — 0.3 (3.6 ) (0.2 ) — (3.5 ) Balance as of September 30, 2017 $ (49.6 ) (58.7 ) (45.1 ) (5.6 ) — $ (159.0 ) Net book value as of September 30, 2017 $ 181.7 59.0 49.0 17.7 — $ 307.4 (1) Included in this amount for MSRs was $7.7 million relating to prepayments/write-offs due to prepayments of sold warehouse receivables for which we retained the servicing rights. (2) Amortization of MSRs is included in Revenue within the Condensed Consolidated Statements of Comprehensive Income. MSRs Other Intangibles (in millions) Americas Americas EMEA Asia Pacific LaSalle Consolidated Gross Carrying Amount Balance as of December 31, 2015 $ 171.6 125.5 48.5 14.3 6.3 $ 366.2 Additions, net of adjustments 17.0 38.6 51.8 5.7 — 113.1 Impairments (1) — — — — (6.5 ) (6.5 ) Impact of exchange rate movements — (0.3 ) (4.7 ) 0.5 0.3 (4.2 ) Balance as of September 30, 2016 $ 188.6 163.8 95.6 20.5 0.1 $ 468.6 Accumulated Amortization Balance as of December 31, 2015 $ (8.6 ) (88.4 ) (32.6 ) (9.3 ) (0.1 ) $ (139.0 ) Amortization, net (2) (17.8 ) (7.7 ) (7.0 ) (1.3 ) — (33.8 ) Impact of exchange rate movements — 0.4 3.5 (0.2 ) — 3.7 Balance as of September 30, 2016 $ (26.4 ) (95.7 ) (36.1 ) (10.8 ) (0.1 ) $ (169.1 ) Net book value as of September 30, 2016 $ 162.2 68.1 59.5 9.7 — $ 299.5 (1) In the third quarter of 2016, we fully impaired an indefinite-lived intangible asset related to a 2011 acquisition of an Australian property fund management business. (2) Amortization of MSRs is included in Revenue within the Condensed Consolidated Statements of Comprehensive Income.
Future Amortization Expense for Finite-Lived Intangible Assets	The remaining estimated future amortization expense of MSRs and other identifiable intangible assets, by year, as of September 30, 2017 , is presented in the following table. (in millions) MSRs Other Intangibles Total 2017 (3 months) $ 7.7 11.9 $ 19.6 2018 30.0 24.2 54.2 2019 26.9 22.2 49.1 2020 24.2 19.5 43.7 2021 20.4 13.3 33.7 2022 17.4 13.5 30.9 Thereafter 55.1 12.3 67.4 Total $ 181.7 116.9 $ 298.6

Investments in Real Estate Ve24

Investments in Real Estate Ventures (Tables)	9 Months Ended
	Sep. 30, 2017
Schedule of Equity Method Investments [Line Items]
Investments in real estate ventures, Fair Value	The table below shows the movement in our investments in real estate ventures reported at fair value. (in millions) 2017 2016 Fair value investments as of January 1, $ 212.7 155.2 Investments 21.2 59.8 Distributions (22.5 ) (32.6 ) Change in fair value 17.9 14.2 Foreign currency translation adjustments, net 4.9 7.4 Fair value investments as of September 30, $ 234.2 204.0
Consolidated Variable Interest Entities [Member]
Schedule of Equity Method Investments [Line Items]
Balance Sheet Amounts Consolidated for Variable Interest Entity [Table Text Block]	Summarized financial information for our consolidated VIEs is presented in the following tables. (in millions) September 30, 2017 December 31, 2016 Property and equipment, net $ 13.5 13.8 Investment in real estate ventures 9.1 10.3 Other current assets (1) 40.0 40.7 Total assets $ 62.6 64.8 Other current liabilities (1) $ 31.2 35.0 Mortgage indebtedness (included in Other liabilities) 9.3 9.7 Total liabilities 40.5 44.7 Members' equity (included in Noncontrolling interest) 22.1 20.1 Total liabilities and members' equity $ 62.6 64.8 (1) Balances primarily represent investment properties and their corresponding liabilities, classified as held for sale.
Comprehensive Income Amounts Consolidated for Variable Interest Entity [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2017 2016 2017 2016 Revenue $ 1.8 2.6 $ 4.4 5.6 Operating and other expenses (1.6 ) (3.7 ) (3.6 ) (5.7 ) Gain on sale of investment — — — 13.3 Net income $ 0.2 (1.1 ) $ 0.8 13.2

Stock-based Compensation (Table

Stock-based Compensation (Tables)	9 Months Ended
	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Restricted Stock Unit Activity	Restricted stock unit activity is presented in the following tables. Shares (thousands) Weighted Average Weighted Average Remaining (in years) Unvested as of June 30, 2017 775.9 $ 117.74 1.61 Granted 5.1 115.47 Vested (70.9 ) 112.64 Forfeited (0.8 ) 130.32 Unvested as of September 30, 2017 709.3 $ 118.22 1.43 Unvested shares expected to vest as of September 30, 2017 709.3 $ 118.22 1.43 Unvested as of June 30, 2016 817.3 $ 112.58 2.00 Granted 27.0 112.75 Vested (96.2 ) 101.71 Forfeited (2.4 ) 107.79 Unvested as of September 30, 2016 745.7 $ 114.00 1.91 Unvested shares expected to vest as of September 30, 2016 726.0 $ 114.10 1.92 Shares (thousands) Weighted Average Weighted Average Remaining (in years) Unvested as of December 31, 2016 750.9 $ 113.97 1.71 Granted 157.0 116.50 Vested (177.3 ) 99.24 Forfeited (21.3 ) 113.18 Unvested as of September 30, 2017 709.3 $ 118.22 1.43 Unvested shares expected to vest as of September 30, 2017 709.3 $ 118.22 1.43 Unvested as of December 31, 2015 706.0 $ 111.78 2.03 Granted 277.6 107.96 Vested (190.8 ) 96.51 Forfeited (47.1 ) 116.07 Unvested as of September 30, 2016 745.7 $ 114.00 1.91 Unvested shares expected to vest as of September 30, 2016 726.0 $ 114.10 1.92

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2017
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 of our assets and liabilities measured at fair value on a recurring basis. September 30, 2017 December 31, 2016 (in millions) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Assets Investments in real estate ventures - fair value $ 45.0 — — 43.7 — — Foreign currency forward contracts receivable — 3.0 — — 8.7 — Warehouse receivables — 337.8 — n/a n/a n/a Deferred compensation plan assets — 218.5 — — 173.0 — Mortgage banking derivative assets — — 22.8 — — 31.4 Total assets at fair value $ 45.0 559.3 22.8 43.7 181.7 31.4 Liabilities Foreign currency forward contracts payable $ — 11.6 — — 22.9 — Deferred compensation plan liabilities — 208.8 — 169.5 — Earn-out liabilities — — 223.5 — — 229.6 Mortgage banking derivative liabilities — — 11.3 — — 15.9 Total liabilities at fair value $ — 220.4 234.8 — 192.4 245.5
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation	The tables below present a reconciliation for assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3). (in millions) Balance as of June 30, 2017 Net change in fair value Foreign currency translation adjustments Purchases / Additions Settlements Balance as of September 30, 2017 Mortgage banking derivative assets and liabilities, net $ 14.1 3.4 — 25.5 (31.5 ) $ 11.5 Earn-out liabilities $ 225.6 (0.6 ) 2.9 0.7 (5.1 ) $ 223.5 (in millions) Balance as of June 30, 2016 Net change in fair value Foreign currency translation adjustments Purchases / Additions Settlements Balance as of September 30, 2016 Earn-out liabilities $ 169.6 (0.6 ) 0.2 43.3 (2.4 ) $ 210.1 (in millions) Balance as of December 31, 2016 Net change in fair value Foreign currency translation adjustments Purchases / Additions Settlements Balance as of September 30, 2017 Mortgage banking derivative assets and liabilities, net $ 15.5 11.8 — 56.6 (72.4 ) $ 11.5 Earn-out liabilities 229.6 (2.7 ) 7.4 11.4 (22.2 ) 223.5 (in millions) Balance as of December 31, 2015 Net change in fair value Foreign currency translation adjustments Purchases / Additions Settlements Balance as of September 30, 2016 Earn-out liabilities $ 127.3 (1.5 ) (1.0 ) 90.5 (5.2 ) $ 210.1
Fair Value, Qualitative Disclosures About Assets and Liabilities using Unobservable Inputs	Net change in fair value, included in the tables above, is reported in Net income as follows. Category of Assets/Liabilities using Unobservable Inputs Condensed Consolidated Statements of Comprehensive Income Account Caption Earn-out liabilities (Short-term and Long-term) Restructuring and acquisition charges Other current assets - Mortgage banking derivative assets Revenue Other current liabilities - Mortgage banking derivative liabilities Revenue

Debt Short-Term Borrowings and

Debt Short-Term Borrowings and Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2017
Debt Instrument [Line Items]
Schedule of Debt [Table Text Block]	Short-term borrowings and long-term debt obligations are composed of the following. (in millions) September 30, 2017 December 31, 2016 Short-term borrowings: Local overdraft facilities $ 28.2 31.6 Other short-term borrowings 36.0 57.9 Total short-term borrowings $ 64.2 89.5 Credit facility, net of debt issuance costs of $16.4 and $19.6 433.6 905.4 Long-term senior notes, 4.4%, face amount of $275.0, due November 2022, net of debt issuance costs of $2.0 and $2.3 273.0 272.7 Long-term senior notes, 1.96%, face amount of €175.0, due June 2027, net of debt issuance costs of $1.3 and $0.0 205.6 — Long-term senior notes, 2.21%, face amount of €175.0, due June 2029, net of debt issuance costs of $1.2 and $0.0 205.6 — Total debt $ 1,182.0 1,267.6

Debt Warehouse Facilities (Tabl

Debt Warehouse Facilities (Tables)	9 Months Ended
	Sep. 30, 2017
Line of Credit Facility [Line Items]
Schedule of Warehouse Facilities	September 30, 2017 December 31, 2016 ($ in millions) Outstanding Balance Maximum Capacity Outstanding Balance Maximum Capacity Warehouse Facilities: LIBOR plus 1.4%, expires September 24, 2018 1 $ 179.0 375.0 135.2 275.0 LIBOR plus 1.35%, expires September 29, 2018 2 122.5 375.0 314.7 650.0 LIBOR plus 1.5%, expires August 31, 2018 — 100.0 15.0 100.0 Fannie Mae ASAP program, LIBOR plus 1.30% to 1.45% 32.0 n/a 116.1 n/a Gross warehouse facilities $ 333.5 850.0 581.0 1,025.0 Debt issuance costs (1.6 ) n/a (0.9 ) n/a Total warehouse facilities $ 331.9 850.0 580.1 1,025.0 1 In the third quarter of 2017, we extended the Warehouse facility; the facility originally had a maximum capacity of $275.0 million and a maturity date of September 25, 2017. 2 In the third quarter of 2017, we extended the Warehouse facility; the facility originally had a maximum capacity of $250.0 million and a maturity date of September 22, 2017.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Schedule of Loss Contingencies by Contingency [Table Text Block]	The following table shows the professional indemnity accrual activity and related payments. (in millions) December 31, 2016 $ 7.3 New claims 0.7 Prior year claims adjustments 1.5 Claims paid (3.0 ) September 30, 2017 $ 6.5 December 31, 2015 $ 19.2 New claims 7.5 Prior year claims adjustments (1.6 ) Claims paid (15.2 ) September 30, 2016 $ 9.9

Restructuring and Acquisition30

Restructuring and Acquisition Charges (Tables)	9 Months Ended
	Sep. 30, 2017
Restructuring and Related Activities [Abstract]
Restructuring Charges and Related Payment Activity	The following tables show the restructuring and acquisition accrual activity and related payments, which are exclusive of the adjustments individually noted above. (in millions) Severance & Employment-Related Lease Exit Other Acquisition Total December 31, 2016 $ 19.7 5.5 5.8 31.0 Accruals 10.6 0.7 4.7 16.0 Payments made (19.0 ) (0.6 ) (6.5 ) (26.1 ) September 30, 2017 $ 11.3 5.6 4.0 20.9 (in millions) Severance & Employment-Related Lease Other Total December 31, 2015 $ 2.7 5.7 0.2 8.6 Accruals 16.0 — 14.9 30.9 Payments made (5.1 ) (0.4 ) (11.4 ) (16.9 ) September 30, 2016 $ 13.6 5.3 3.7 22.6

Noncontrolling Interest (Tables

Noncontrolling Interest (Tables)	9 Months Ended
	Sep. 30, 2017
Noncontrolling Interest [Abstract]
Redeemable Noncontrolling Interest [Table Text Block]	We present changes in amounts attributable to redeemable noncontrolling interests in the following table. (in millions) Redeemable noncontrolling interests as of December 31, 2016 $ 6.8 Acquisition of redeemable noncontrolling interest (1) (3.5 ) Net loss (0.1 ) Impact of exchange rate movements 0.7 Redeemable noncontrolling interests as of September 30, 2017 $ 3.9 (1) Reflects our redemption of a portion of the redeemable noncontrolling interest related to our 2014 acquisition of Tenzing AB and includes $1.1 million representing the difference between the redemption value and the carrying value of the acquired interest.

Accumulated Other Comprehensi32

Accumulated Other Comprehensive Income (Loss) by Component (Tables)	9 Months Ended
	Sep. 30, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	The tables below present the changes in Accumulated other comprehensive income (loss) by component. (in millions) Pension and postretirement benefit Cumulative foreign currency translation adjustment Total Balance as of June 30, 2017 $ (67.9 ) (353.3 ) (421.2 ) Other comprehensive income before reclassification — 45.6 45.6 Amounts reclassified from AOCI after tax expense of $0.3, $ - and $0.3 1.2 — 1.2 Other comprehensive income after tax expense of $0.3, $ - and $0.3 1.2 45.6 46.8 Balance as of September 30, 2017 $ (66.7 ) (307.7 ) (374.4 ) (in millions) Pension and postretirement benefit Cumulative foreign currency translation adjustment Total Balance as of June 30, 2016 $ (35.8 ) (336.4 ) (372.2 ) Other comprehensive loss before reclassification — (15.0 ) (15.0 ) Amounts reclassified from AOCI after tax expense of $ - , $ - and $ - — — — Other comprehensive loss after tax expense of $ - , $ - and $ - — (15.0 ) (15.0 ) Balance as of September 30, 2016 $ (35.8 ) (351.4 ) (387.2 ) (in millions) Pension and postretirement benefit Cumulative foreign currency translation adjustment Total Balance as of December 31, 2016 $ (68.7 ) (482.4 ) (551.1 ) Other comprehensive income before reclassification — 174.7 174.7 Amounts reclassified from AOCI after tax expense of $0.5, $ - and $0.5 2.0 — 2.0 Other comprehensive income after tax expense of $0.5, $ - and $0.5 2.0 174.7 176.7 Balance as of September 30, 2017 $ (66.7 ) (307.7 ) (374.4 ) (in millions) Pension and postretirement benefit Cumulative foreign currency translation adjustment Total Balance as of December 31, 2015 $ (35.8 ) (300.5 ) (336.3 ) Other comprehensive loss before reclassification — (50.9 ) (50.9 ) Amounts reclassified from AOCI after tax expense of $ - , $ - and $ - — — — Other comprehensive loss after tax expense of $ - , $ - and $ - — (50.9 ) (50.9 ) Balance as of September 30, 2016 $ (35.8 ) (351.4 ) (387.2 )

New Accounting Standards ASU 20

New Accounting Standards ASU 2016-09 (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Jan. 01, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description	no material impact
Retained Earnings [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect from Adoption of new accounting for stock-based compensation	$ 1.3	$ 1.3

New Accounting Standards Effect

New Accounting Standards Effect of change related to ASU 2014-09 (Details) - Accounting Standards Update 2014-09 [Member] $ in Billions	12 Months Ended
	Dec. 31, 2016USD ($)
Minimum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 5.5
Maximum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 6.5

Business Segments (Details)

Business Segments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Segment revenue:
Revenue	$ 1,947	$ 1,705.2	$ 5,396.9	$ 4,645.6
Operating expenses:
Depreciation and amortization	41.8	35.9	122.3	98.5
Total operating expenses	1,828.9	1,634.2	5,152.2	4,431.3
Operating income	118.1	71	244.7	214.3
Equity in earnings (losses)	12.6	5.5	32.7	27.7
Segment Reconciling Items:
Revenue	1,947	1,705.2	5,396.9	4,645.6
Total segment operating expenses before restructuring and acquisition charges	1,825.5	1,616.2	5,138.9	4,395.4
Segment Reporting Information Operating Income Before Restructuring Charges	121.5	89	258	250.2
Restructuring and acquisition charges	3.4	18	13.3	35.9
Operating income	118.1	71	244.7	214.3
Reportable Subsegments [Member]
Segment revenue:
Total segment fee revenue	1,624.6	1,444.3	4,517.2	3,907.8
Operating expenses:
Gross contract vendor and subcontractor costs reimbursement	315.3	258	868.6	735.5
Reportable Subsegments [Member] | Americas [Member]
Segment revenue:
Revenue	796.7	771.1	2,311.3	2,047.5
Gross contract costs	(40.4)	(52.6)	(131.4)	(144.8)
Derivative, Gain (Loss) on Derivative, Net	7.1	2.9	11.1	2.3
Total segment fee revenue	749.2	715.6	2,168.8	1,900.4
Operating expenses:
Compensation, operating and administrative expenses	699.1	686	2,054	1,842.2
Depreciation and amortization	24.2	21.3	71.4	58.4
Total operating expenses	723.3	707.3	2,125.4	1,900.6
Gross contract vendor and subcontractor costs reimbursement	40.4	52.6	131.4	144.8
Total fee based segment operating expenses	682.9	654.7	1,994	1,755.8
Operating income	73.4	63.8	185.9	146.9
Equity in earnings (losses)	0.1	0.1	0.5	0.8
Operating Income (Loss), Including Income (Loss) from Equity Method Investments	73.5	63.9	186.4	147.7
Segment Reconciling Items:
Revenue	796.7	771.1	2,311.3	2,047.5
Operating income	73.4	63.8	185.9	146.9
Reportable Subsegments [Member] | EMEA [Member]
Segment revenue:
Revenue	635.2	522.7	1,727.1	1,373.4
Gross contract costs	(171.6)	(146.2)	(464.7)	(407.3)
Total segment fee revenue	463.6	376.5	1,262.4	966.1
Operating expenses:
Compensation, operating and administrative expenses	621.4	513.9	1,712.3	1,348.9
Depreciation and amortization	11.6	9.6	33	25.6
Total operating expenses	633	523.5	1,745.3	1,374.5
Gross contract vendor and subcontractor costs reimbursement	171.6	146.2	464.7	407.3
Total fee based segment operating expenses	461.4	377.3	1,280.6	967.2
Operating income	2.2	(0.8)	(18.2)	(1.1)
Equity in earnings (losses)	0	0	0	(0.1)
Operating Income (Loss), Including Income (Loss) from Equity Method Investments	2.2	(0.8)	(18.2)	(1.2)
Segment Reconciling Items:
Revenue	635.2	522.7	1,727.1	1,373.4
Operating income	2.2	(0.8)	(18.2)	(1.1)
Reportable Subsegments [Member] | Asia Pacific [Member]
Segment revenue:
Revenue	413	331.1	1,095.4	916.9
Gross contract costs	(103.3)	(59.2)	(272.5)	(183.4)
Total segment fee revenue	309.7	271.9	822.9	733.5
Operating expenses:
Compensation, operating and administrative expenses	383.6	309.3	1,033.7	869
Depreciation and amortization	5.2	4.2	15.7	12.4
Total operating expenses	388.8	313.5	1,049.4	881.4
Gross contract vendor and subcontractor costs reimbursement	103.3	59.2	272.5	183.4
Total fee based segment operating expenses	285.5	254.3	776.9	698
Operating income	24.2	17.6	46	35.5
Equity in earnings (losses)	0.9	0.5	2.3	0.5
Operating Income (Loss), Including Income (Loss) from Equity Method Investments	25.1	18.1	48.3	36
Segment Reconciling Items:
Revenue	413	331.1	1,095.4	916.9
Operating income	24.2	17.6	46	35.5
Investment Management [Member]
Segment revenue:
Revenue	102.1	80.3	263.1	307.8
Operating expenses:
Compensation, operating and administrative expenses	79.6	71.1	216.6	236.8
Depreciation and amortization	0.8	0.8	2.2	2.1
Total operating expenses	80.4	71.9	218.8	238.9
Operating income	21.7	8.4	44.3	68.9
Equity in earnings (losses)	11.6	4.9	29.9	26.5
Operating Income (Loss), Including Income (Loss) from Equity Method Investments	33.3	13.3	74.2	95.4
Segment Reconciling Items:
Revenue	102.1	80.3	263.1	307.8
Operating income	$ 21.7	$ 8.4	$ 44.3	$ 68.9

Business Combinations (Details)

Business Combinations (Details) $ in Millions	9 Months Ended
	Sep. 30, 2017USD ($)acquisition	Sep. 30, 2016USD ($)	Jun. 30, 2017USD ($)	Dec. 31, 2016USD ($)acquisition	Jun. 30, 2016USD ($)	Dec. 31, 2015USD ($)
Business Acquisition [Line Items]
Number of Businesses Acquired | acquisition	5
Payments to Acquire Businesses	$ 22.4
Cash Acquired in Excess of Payments to Acquire Business	5.6
Business Combinations, Guaranteed Deferred Acquisition Obligation	1.8	$ 53.1
Business Combination, contingent earn-out consideration	11.5
Goodwill, Acquired During Period	24.3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	9.7
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	1.7
Payment for deferred acquisition obligations and earn-out obligation	(41.2)	(46.6)
Payments for Repurchase of Redeemable Noncontrolling Interest	2.4
Goodwill, Period Increase (Decrease)	5.3
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Assets	1.9
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles	(0.4)
Maximum amount of the potential earn-out payments	$ 436.9			$ 435
Number of acquisitions subject to potential earn-out payments provisions | acquisition	56			52
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Business Acquisition [Line Items]
Business Combination, Contingent Consideration, Liability	$ 223.5	$ 210.1	$ 225.6	$ 229.6	$ 169.6	$ 127.3

Business Combinations, Goodwi37

Business Combinations, Goodwill by Segment (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
BUSINESS COMBINATIONS, GOODWILL AND OTHER INTANGIBLE ASSETS [Abstract]
Intangible Assets, Net (Including Goodwill)	$ 3,008.7
Goodwill	307.4	$ 299.5	$ 295
Finite-Lived Intangible Assets, Net	298.6
Identifiable intangibles with indefinite useful lives	8.8
Goodwill [Roll Forward]
Goodwill	2,579.3	2,141.5
Goodwill Additions, net of adjustments	29.6	450.6
Goodwill, Translation Adjustments	92.4	(45.3)
Goodwill	2,701.3	2,546.8
Investment Management [Member]
Goodwill [Roll Forward]
Goodwill	15.4	17.6
Goodwill Additions, net of adjustments	0	0
Goodwill, Translation Adjustments	1	(1.5)
Goodwill	16.4	16.1
Americas [Member] | Reportable Subsegments [Member]
Goodwill [Roll Forward]
Goodwill	1,406.1	1,161.1
Goodwill Additions, net of adjustments	5.2	174.2
Goodwill, Translation Adjustments	0.9	0.8
Goodwill	1,412.2	1,336.1
EMEA [Member] | Reportable Subsegments [Member]
Goodwill [Roll Forward]
Goodwill	851.7	696.2
Goodwill Additions, net of adjustments	17.9	239.8
Goodwill, Translation Adjustments	80.5	(50.8)
Goodwill	950.1	885.2
Asia Pacific [Member] | Reportable Subsegments [Member]
Goodwill [Roll Forward]
Goodwill	306.1	266.6
Goodwill Additions, net of adjustments	6.5	36.6
Goodwill, Translation Adjustments	10	6.2
Goodwill	$ 322.6	$ 309.4

Business Combinations Other Int

Business Combinations Other Intangibles by Segment (Details) - USD ($) $ in Millions	6 Months Ended	9 Months Ended
	Jun. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015
Schedule of Finite and Indefinite lived Intangible Assets by Segment [Line Items]
Finite And Indefinite Lived Intangible Assets Gross		$ 466.4	$ 468.6	$ 475.6	$ 366.2
Finite and Indefinite lived Intangible Assets, Additions		60	113.1
Adjustment for fully amortized intangibles		(78.3)
Impairment of Intangible Assets (Excluding Goodwill)	$ (6.5)		(6.5)
Finite And Indefinite Lived Intangible Assets Translation Adjustments		9.1	(4.2)
Identified intangibles, with finite useful lives, accumulated amortization		(159)	(169.1)	(180.6)	(139)
Amortization expense		53.2	33.8
Accumulated Amortization Adjustment for fully Amortized Intangibles		78.3
Impact of exchange rate movements		(3.5)	3.7
Net book value as of end of period		307.4	299.5	295
Servicing Asset at Amortized Cost, Other than Temporary Impairments		7.7
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
2017 (3 months)		19.6
2,018		54.2
2,019		49.1
2,020		43.7
2,021		33.7
2,022		30.9
Thereafter		67.4
Total		298.6
Reportable Subsegments [Member] | Americas [Member]
Schedule of Finite and Indefinite lived Intangible Assets by Segment [Line Items]
Impairment of Intangible Assets (Excluding Goodwill)	0
Reportable Subsegments [Member] | EMEA [Member]
Schedule of Finite and Indefinite lived Intangible Assets by Segment [Line Items]
Impairment of Intangible Assets (Excluding Goodwill)	0
Reportable Subsegments [Member] | Asia Pacific [Member]
Schedule of Finite and Indefinite lived Intangible Assets by Segment [Line Items]
Impairment of Intangible Assets (Excluding Goodwill)	0
Investment Management [Member]
Schedule of Finite and Indefinite lived Intangible Assets by Segment [Line Items]
Impairment of Intangible Assets (Excluding Goodwill)			(6.5)
Mortgage servicing rights [Member]
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
2017 (3 months)		7.7
2,018		30
2,019		26.9
2,020		24.2
2,021		20.4
2,022		17.4
Thereafter		55.1
Total		181.7
Mortgage servicing rights [Member] | Reportable Subsegments [Member] | Americas [Member]
Schedule of Finite and Indefinite lived Intangible Assets by Segment [Line Items]
Finite And Indefinite Lived Intangible Assets Gross		231.3	188.6	193.1	171.6
Finite and Indefinite lived Intangible Assets, Additions		50.7	17
Adjustment for fully amortized intangibles		(12.5)
Impairment of Intangible Assets (Excluding Goodwill)	$ 0
Finite And Indefinite Lived Intangible Assets Translation Adjustments		0	0
Identified intangibles, with finite useful lives, accumulated amortization		(49.6)	(26.4)	(32.3)	(8.6)
Amortization expense		29.8	17.8
Accumulated Amortization Adjustment for fully Amortized Intangibles		12.5
Impact of exchange rate movements		0	0
Net book value as of end of period		181.7	162.2
Other Intangible Assets [Member]
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
2017 (3 months)		11.9
2,018		24.2
2,019		22.2
2,020		19.5
2,021		13.3
2,022		13.5
Thereafter		12.3
Total		116.9
Other Intangible Assets [Member] | Reportable Subsegments [Member] | Americas [Member]
Schedule of Finite and Indefinite lived Intangible Assets by Segment [Line Items]
Finite And Indefinite Lived Intangible Assets Gross		117.7	163.8	167.1	125.5
Finite and Indefinite lived Intangible Assets, Additions		0.4	38.6
Adjustment for fully amortized intangibles		(50)
Finite And Indefinite Lived Intangible Assets Translation Adjustments		0.2	(0.3)
Identified intangibles, with finite useful lives, accumulated amortization		(58.7)	(95.7)	(98.7)	(88.4)
Amortization expense		10.3	7.7
Accumulated Amortization Adjustment for fully Amortized Intangibles		50
Impact of exchange rate movements		0.3	0.4
Net book value as of end of period		59	68.1
Other Intangible Assets [Member] | Reportable Subsegments [Member] | EMEA [Member]
Schedule of Finite and Indefinite lived Intangible Assets by Segment [Line Items]
Finite And Indefinite Lived Intangible Assets Gross		94.1	95.6	91.1	48.5
Finite and Indefinite lived Intangible Assets, Additions		3.1	51.8
Adjustment for fully amortized intangibles		(7.7)
Finite And Indefinite Lived Intangible Assets Translation Adjustments		7.6	(4.7)
Identified intangibles, with finite useful lives, accumulated amortization		(45.1)	(36.1)	(38)	(32.6)
Amortization expense		11.2	7
Accumulated Amortization Adjustment for fully Amortized Intangibles		7.7
Impact of exchange rate movements		(3.6)	3.5
Net book value as of end of period		49	59.5
Other Intangible Assets [Member] | 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		23.3	20.5	24.2	14.3
Finite and Indefinite lived Intangible Assets, Additions		5.8	5.7
Adjustment for fully amortized intangibles		(8)
Finite And Indefinite Lived Intangible Assets Translation Adjustments		1.3	0.5
Identified intangibles, with finite useful lives, accumulated amortization		(5.6)	(10.8)	(11.5)	(9.3)
Amortization expense		1.9	1.3
Accumulated Amortization Adjustment for fully Amortized Intangibles		8
Impact of exchange rate movements		(0.2)	(0.2)
Net book value as of end of period		17.7	9.7
Other Intangible Assets [Member] | Investment Management [Member]
Schedule of Finite and Indefinite lived Intangible Assets by Segment [Line Items]
Finite And Indefinite Lived Intangible Assets Gross		0	0.1	0.1	6.3
Finite and Indefinite lived Intangible Assets, Additions		0	0
Adjustment for fully amortized intangibles		(0.1)
Finite And Indefinite Lived Intangible Assets Translation Adjustments		0	0.3
Identified intangibles, with finite useful lives, accumulated amortization		0	(0.1)	$ (0.1)	$ (0.1)
Amortization expense		0	0
Accumulated Amortization Adjustment for fully Amortized Intangibles		0.1
Impact of exchange rate movements		0	0
Net book value as of end of period		$ 0	$ 0

Investments in Real Estate Ve39

Investments in Real Estate Ventures (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)investment	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)investment	Sep. 30, 2016USD ($)	Dec. 31, 2016USD ($)
Schedule of Equity Method Investments [Line Items]
Investments in real estate ventures	$ 372.5		$ 372.5		$ 355.4
Number of separate property or fund co-investments | investment	46		46
Minimum ownership percentage in real estate ventures (in hundredths)	1.00%		1.00%
Maximum ownership percentage in real estate ventures (in hundredths)	10.00%		10.00%
Property, Plant and Equipment, Net, consolidated VIE	$ 516.6		$ 516.6		501
Investments in real estate ventures, consolidated VIE	372.5		372.5		355.4
Total assets	7,554.3		7,554.3		7,629.4
Other Liabilities, Noncurrent, consolidated VIE	177.5		177.5		161.3
Total liabilities	4,379		4,379		4,807.9
Total liabilities and equity	7,554.3		7,554.3		7,629.4
Revenue, consolidated VIE	1,947	$ 1,705.2	5,396.9	$ 4,645.6
Net income	87.5	48.2	177.5	167.8
Fair Value [Abstract]
Fair value investments at beginning of the period			212.7	155.2
Investments in Real Estate Ventures, at Fair Value, Additions			21.2	59.8
Investments in Real Estate Ventures, at Fair Value, Distributions			22.5	32.6
Unrealized Gain (Loss) on Investments			17.9	14.2
Investments in Real Estate Ventures, at Fair Value, Foreign Currency Translation			4.9	7.4
Fair value investments at end of the period	$ 234.2	204	$ 234.2	204
LaSalle Investment Company II [Member]
Schedule of Equity Method Investments [Line Items]
Partnership ownership interest (in hundredths)	48.78%		48.78%
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 65.4		$ 65.4
Exclusive of LaSalle Investment Company II [Member]
Schedule of Equity Method Investments [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	222.2		222.2
Equity Method Investments [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate ventures	9.1		9.1		10.3
Property, Plant and Equipment, Net, consolidated VIE	13.5		13.5		13.8
Investments in real estate ventures, consolidated VIE	9.1		9.1		10.3
Other Assets, consolidated VIE	40		40		40.7
Total assets	62.6		62.6		64.8
Other Liabilities, Noncurrent, consolidated VIE	31.2		31.2		35
Loans Payable, Fair Value Disclosure, consolidated VIE	9.3		9.3		9.7
Total liabilities	40.5		40.5		44.7
Members' Equity, consolidated VIE	22.1		22.1		20.1
Total liabilities and equity	62.6		62.6		$ 64.8
Revenue, consolidated VIE	1.8	2.6	4.4	5.6
Other Expenses, consolidated VIE	(1.6)	(3.7)	(3.6)	(5.7)
Gains (Losses) on Sales of Investment Real Estate, consolidated VIE	0	0	0	13.3
Net income	$ 0.2	$ (1.1)	$ 0.8	$ 13.2

Stock-based Compensation (Detai

Stock-based Compensation (Details) - Restricted Stock Units (RSUs) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015
Restricted stock unit activity [Roll Forward]
Unvested at beginning of period (in shares)	775,900		817,300		750,900	706,000	706,000
Granted (in shares)	5,100		27,000		157,000	277,600
Vested (in shares)	(70,900)		(96,200)		(177,300)	(190,800)
Forfeited (in shares)	(800)		(2,400)		(21,300)	(47,100)
Unvested at end of period (in shares)	709,300	775,900	745,700	817,300	709,300	745,700	750,900	706,000
Unvested shares expected to vest (in shares)	709,300		726,000		709,300	726,000
Restricted stock unit activity, additional disclosures [Abstract]
Weighted average grant date fair value, beginning of period (in dollars per share)	$ 117.74		$ 112.58		$ 113.97	$ 111.78	$ 111.78
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	115.47		112.75		116.50	107.96
Weighted average grant date fair value, vested (in dollars per share)	112.64		101.71		99.24	96.51
Weighted average grant date fair value, forfeited (in dollars per share)	130.32		107.79		113.18	116.07
Weighted average grant date fair value, end of period (in dollars per share)	118.22	$ 117.74	114	$ 112.58	118.22	114	$ 113.97	$ 111.78
Weighted average grant date fair value, unvested shares expected to vest (in dollars per share)	$ 118.22		$ 114.10		$ 118.22	$ 114.10
Weighted average remaining contractual life, unvested shares outstanding	1 year 5 months 5 days	1 year 7 months 9 days	1 year 10 months 29 days	2 years	1 year 5 months 5 days	1 year 10 months 29 days	1 year 8 months 15 days	2 years 10 days
Weighted average remaining contractual life, unvested shares outstanding, expected to vest	1 year 5 months 5 days		1 year 11 months		1 year 5 months 5 days	1 year 11 months
Unamortized deferred compensation cost	$ 25.1				$ 25.1

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount	$ 0		$ 0
Fair Value, Assets, Level 2 to Level 1 Transfers, Amount	0		$ 0
Fair value of long-term debt	704.5	$ 284.9
Long-term debt, net of debt issuance costs	684.2	272.7
Investments, Fair Value Disclosure, Measured at NAV	189.2	169
Foreign currency forward contracts, gross notional value	2,000	1,900
Foreign currency forward contracts, net notional value	1,410	1,390
Foreign Currency Transaction Gain (Loss), Unrealized	8.6
Deferred compensation plan, contra-equity, shares held in trust	5.8	6
Foreign Exchange Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	5.2	8.9
Derivative Asset, Fair Value, Gross Liability	2.2	0.2
Derivative Liability, Fair Value, Gross Asset	1.4	1.3
Derivative Liability, Fair Value, Gross Liability	13	24.2
Long-Term Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unamortized Debt Issuance Expense	4.5	2.3
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 contract, current asset amount	3	8.7
Foreign currency forward contract, current liability amount	11.6	22.9
Deferred compensation plan assets	218.5	173
Deferred compensation plan liabilities	$ 208.8	$ 169.5

Fair Value Measurements (Assets

Fair Value Measurements (Assets and Liabilities Measured on a Recurring Basis) (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Millions	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in real estate ventures - fair value	$ 45		$ 43.7
Foreign currency forward contracts receivable	0		0
Warehouse receivables	0
Deferred compensation plan assets	0		0
Mortgage banking derivative asset	0		0
Total assets at fair value	45		43.7
Foreign currency forward contracts payable	0		0
Deferred compensation plan liabilities	0		0
Business Combination, Contingent Consideration, Liability	0		0
Mortgage banking derivative liabilities	0		0
Total liabilities at fair value	0		0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in real estate ventures - fair value	0		0
Foreign currency forward contracts receivable	3		8.7
Warehouse receivables	337.8
Deferred compensation plan assets	218.5		173
Mortgage banking derivative asset	0		0
Total assets at fair value	559.3		181.7
Foreign currency forward contracts payable	11.6		22.9
Deferred compensation plan liabilities	208.8		169.5
Business Combination, Contingent Consideration, Liability	0		0
Mortgage banking derivative liabilities	0		0
Total liabilities at fair value	220.4		192.4
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in real estate ventures - fair value	0		0
Foreign currency forward contracts receivable	0		0
Warehouse receivables	0
Deferred compensation plan assets	0		0
Mortgage banking derivative asset	22.8		31.4
Total assets at fair value	22.8		31.4
Foreign currency forward contracts payable	0		0
Deferred compensation plan liabilities			0
Business Combination, Contingent Consideration, Liability	223.5	$ 225.6	229.6	$ 210.1	$ 169.6	$ 127.3
Mortgage banking derivative liabilities	11.3		15.9
Total liabilities at fair value	$ 234.8		$ 245.5

Fair Value Measurements Fair Va

Fair Value Measurements Fair Value Measurements (Reconciliation of Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs) (Details) - Fair Value, Measurements, Recurring [Member] - Fair Value, Inputs, Level 3 [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Business Combination, Contingent Consideration, Liability, Beginning Balance	$ 225.6	$ 169.6	$ 229.6	$ 127.3
Derivative Assets (Liabilities), at Fair Value, Net, Beginning Balance	14.1		15.5
Business Combination, Contingent Consideration, Liability, Ending Balance	223.5	210.1	223.5	210.1
Derivative Assets (Liabilities), at Fair Value, Net, Ending Balance	11.5		11.5
Earn-out Liabilities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings	(0.6)	(0.6)	(2.7)	(1.5)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)	2.9	0.2	7.4	(1)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases	0.7	43.3	11.4	90.5
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements	5.1	$ 2.4	22.2	$ 5.2
Derivative [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings	3.4		11.8
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)	0		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases	25.5		56.6
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements	$ 31.5		$ 72.4

Credit Facility (Details)

Credit Facility (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 850		$ 850		$ 1,025
Letters of Credit Outstanding, Amount	12		12		$ 18.2
Line of Credit [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	2,750		2,750
Line of Credit Facility, Average Outstanding Amount	$ 712.3	$ 1,211.3	$ 1,042.7	$ 904.2
Pricing on the Facility based on market rates			LIBOR plus 0.95% to 2.05%
Description of Variable Rate Basis			LIBOR
Basis spread on variable rate (in hundredths)			1.25%
Line of Credit Facility, Interest Rate During Period	2.30%	1.40%	2.00%	1.40%

Debt Short-Term Borrowings an45

Debt Short-Term Borrowings and Long-Term Debt (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Borrowing capacity remaining	$ 97.2
Debt Instrument, Face Amount	350
Bank Overdrafts	28.2	$ 31.6
Other Short-term Borrowings	36	57.9
Short-term borrowings	64.2	89.5
Long-term Line of Credit, Noncurrent	433.6	905.4
Long-term debt, net of debt issuance costs	684.2	272.7
Debt, Long-term and Short-term, Combined Amount	1,182	1,267.6
Letters of Credit Outstanding, Amount	12	18.2
Line of Credit [Member]
Debt Instrument [Line Items]
Unamortized Debt Issuance Expense	16.4	19.6
Private Placement [Member]
Debt Instrument [Line Items]
Senior Notes	393.2
Long-term senior notes, 4.4%, due November 2022 [Member]
Debt Instrument [Line Items]
Unamortized Debt Issuance Expense	2	2.3
Long-term debt, net of debt issuance costs	273	272.7
Long-term senior notes, Euro notes, 2.21%, due June 2029 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	175	0
Unamortized Debt Issuance Expense	1.2	0
Long-term debt, net of debt issuance costs	$ 205.6	$ 0
Debt Instrument, Interest Rate, Stated Percentage	2.21%	0.00%
Long-term senior notes, Euro notes, 1.96%, due June 2027 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 175	$ 0
Unamortized Debt Issuance Expense	1.3	0
Long-term debt, net of debt issuance costs	$ 205.6	$ 0
Debt Instrument, Interest Rate, Stated Percentage	1.96%	0.00%
Long-Term Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 275	$ 275
Unamortized Debt Issuance Expense	$ 4.5	$ 2.3
Debt Instrument, Interest Rate, Stated Percentage	4.40%	4.40%

Debt Warehouse Facilities (Deta

Debt Warehouse Facilities (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 850	$ 1,025
Warehouse facilities	331.9	580.1
Line of Credit [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	2,750
Unamortized Debt Issuance Expense	$ 16.4	19.6
Pricing on the Facility based on market rates	LIBOR plus 0.95% to 2.05%
Warehouse Agreement Borrowings [Member]
Line of Credit Facility [Line Items]
Unamortized Debt Issuance Expense	$ 1.6	0.9
Agreement expires September 24, 2018, Extension [Member] [Member]
Line of Credit Facility [Line Items]
Line of Credit, Current	179	135.2
Line of Credit Facility, Maximum Borrowing Capacity	$ 375	275
Pricing on the Facility based on market rates	LIBOR plus 1.4%
Agreement expires September 29, 2018 [Member]
Line of Credit Facility [Line Items]
Line of Credit, Current	$ 122.5	314.7
Line of Credit Facility, Maximum Borrowing Capacity	$ 375	650
Pricing on the Facility based on market rates	LIBOR plus 1.35%
Agreement expires August 31, 2018 [Member]
Line of Credit Facility [Line Items]
Line of Credit, Current	$ 0	15
Line of Credit Facility, Maximum Borrowing Capacity	$ 100	100
Pricing on the Facility based on market rates	LIBOR plus 1.5%
Fannie Mae ASAP program [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Repurchase Amount	$ 32	116.1
Debt Instrument, Interest Rate Terms	LIBOR plus 1.30% to 1.45%
Line of Credit, Gross [Member]
Line of Credit Facility [Line Items]
Line of Credit, Current	$ 333.5	$ 581
Agreement expires September 25, 2017 [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	275
Agreement expires September 22, 2017 [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 250

Commitments and Contingencies47

Commitments and Contingencies (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Level of risk retained by our captive insurance company (per claim)	$ 2.5
Loss Contingency, Receivable	2.4		$ 1.3
Loan subject to loss-sharing arrangements, aggregate unpaid principal amount	7,600		5,800
Loan loss accrual	14.7		$ 12.2
Insurance Claims [Member]
Loss Contingency Accrual [Roll Forward]
Loss Contingency Accrual	7.3	$ 19.2
Loss Contingency Accrual, Provision	0.7	7.5
Loss Contingency Accrual, Provision Adjustment	1.5	(1.6)
Loss Contingency Accrual, Payments	(3)	(15.2)
Loss Contingency Accrual	$ 6.5	$ 9.9

Restructuring and Acquisition48

Restructuring and Acquisition Charges (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Jun. 30, 2016	Jun. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Restructuring and Related Activities [Abstract]
Restructuring and acquisition charges	$ 3.4	$ 18			$ 13.3	$ 35.9
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	(0.6)	(1.7)			(2.7)	(1.5)
Impairment of Intangible Assets (Excluding Goodwill)				$ 6.5		6.5
Restructuring Reserve, Foreign Currency Translation Gain (Loss)		(2.3)	$ 2.3
Restructuring reserve [Roll Forward]
Restructuring reserve, beginning balance				8.6	31	8.6
Restructuring charges					16	30.9
Payments made					(26.1)	(16.9)
Restructuring reserve, ending balance	20.9	22.6			20.9	22.6
Severance [Member]
Restructuring reserve [Roll Forward]
Restructuring reserve, beginning balance				2.7	19.7	2.7
Restructuring charges					10.6	16
Payments made					(19)	(5.1)
Restructuring reserve, ending balance	11.3	13.6			11.3	13.6
Lease Exit [Member]
Restructuring reserve [Roll Forward]
Restructuring reserve, beginning balance				5.7	5.5	5.7
Restructuring charges					0.7	0
Payments made					(0.6)	(0.4)
Restructuring reserve, ending balance	5.6	5.3			5.6	5.3
Other Acquisition Costs [Member]
Restructuring reserve [Roll Forward]
Restructuring reserve, beginning balance				$ 0.2	5.8	0.2
Restructuring charges					4.7	14.9
Payments made					(6.5)	(11.4)
Restructuring reserve, ending balance	$ 4	$ 3.7			$ 4	$ 3.7

Noncontrolling Interest Noncont

Noncontrolling Interest Noncontrolling Interest (Details) $ in Millions	9 Months Ended
	Sep. 30, 2017USD ($)
Noncontrolling Interest [Abstract]
Redeemable Noncontrolling Interest	$ 6.8
Acquisition of redeemable noncontrolling interest	(3.5)
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest	(0.1)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax, Portion Attributable to Noncontrolling Interest	0.7
Redeemable Noncontrolling Interest	3.9
Change in fair value of redeemable noncontrolling interest	$ 1.1

Accumulated Other Comprehensi50

Accumulated Other Comprehensive Income (Loss) by Component (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 3,171.4		$ 3,171.4			$ 2,814.7
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent	1.2	$ 0	2	$ 0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	45.6	(15)	174.7	(50.9)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(66.7)	(35.8)	(66.7)	(35.8)	$ (67.9)	(68.7)	$ (35.8)	$ (35.8)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	0	0	0	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	1.2	0	2	0
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent	1.2	0	2	0
Reclassification from AOCI, Current Period, Tax	0.3	0	0.5	0
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	0	0	0	0
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(307.7)	(351.4)	(307.7)	(351.4)	(353.3)	(482.4)	(336.4)	(300.5)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	45.6	(15)	174.7	(50.9)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0	0	0	0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	45.6	(15)	174.7	(50.9)
Reclassification from AOCI, Current Period, Tax	0	0	0	0
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	0	0	0	0
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(374.4)	(387.2)	(374.4)	(387.2)	$ (421.2)	$ (551.1)	$ (372.2)	$ (336.3)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	45.6	(15)	174.7	(50.9)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	1.2	0	2	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	46.8	(15)	176.7	(50.9)
Reclassification from AOCI, Current Period, Tax	0.3	0	0.5	0
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	$ 0	$ 0	$ 0	$ 0

Subsequent Events Subsequent Ev

Subsequent Events Subsequent Event (Details) - $ / shares	1 Months Ended	3 Months Ended		9 Months Ended
	Nov. 06, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Subsequent Event [Line Items]
Common Stock, Dividends, Per Share, Declared		$ 0	$ 0	$ 0.35	$ 0.31
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends Payable, Date Declared	Nov. 6, 2017
Common Stock, Dividends, Per Share, Declared	$ 0.37
Dividends Payable, Date to be Paid	Dec. 15, 2017
Dividends Payable, Date of Record	Nov. 16, 2017