$JLL
JONES LANG LASALLE INC Stock $jll

$jll Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000103797620000011 Filed on February 27, 2020

Income Statement

Concept	2019 Q4	2018 Q4	2018 Q3
Revenue	$5.401B	$4.890B	$3.970B
YoY Change	10.45%	12.59%	12.71%
Cost Of Revenue	$2.226B	$2.068B	$1.756B
YoY Change	7.6%	11.98%	13.92%
Gross Profit	$3.175B	$2.821B	$2.214B
YoY Change	12.53%	13.04%	11.76%
Gross Profit Margin	58.79%	57.7%	55.76%
Selling, General & Admin	$2.680B	$2.409B	$1.976B
YoY Change	11.26%	10.9%	9.94%
% of Gross Profit	84.4%	85.37%	89.28%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$56.80M	$55.00M	$42.70M
YoY Change	3.27%	22.49%	2.15%
% of Gross Profit	1.79%	1.95%	1.93%
Operating Expenses	$5.032B	$4.577B	$3.779B
YoY Change	9.94%	12.16%	11.66%
Operating Profit	$368.3M	$312.4M	$190.9M
YoY Change	17.89%	19.28%	38.53%
Interest Expense	-$11.20M	-$5.100M	-$8.900M
YoY Change	119.61%	155.0%	286.96%
% of Operating Profit	-3.04%	-1.63%	-4.66%
Other Income/Expense, Net	$1.100M	$13.50M	-$300.0K
YoY Change	-91.85%	1250.0%	0.0%
Pretax Income	$358.2M	$320.8M	$181.7M
YoY Change	11.66%	22.96%	34.39%
Income Tax	$86.40M	$70.60M	$45.60M
% Of Pretax Income	24.12%	22.01%	25.1%
Net Earnings	$274.4M	$201.3M	$134.9M
YoY Change	36.31%	163.48%	37.23%
Net Earnings / Revenue	5.08%	4.12%	3.4%
Basic Earnings Per Share	$5.31	$4.41	$2.96
Diluted Earnings Per Share	$5.23	$4.37	$2.93
COMMON SHARES
Basic Shares Outstanding	51.53M shares	45.57M shares	45.55M shares
Diluted Shares Outstanding			45.97M shares

Balance Sheet

Concept	2019 Q4	2018 Q4	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$452.0M	$481.0M	$327.0M
YoY Change	-6.03%	79.48%	17.63%
Cash & Equivalents	$451.9M	$480.9M	$327.0M
Short-Term Investments
Other Short-Term Assets	$2.049B	$1.863B	$1.716B
YoY Change	9.98%	378.8%	1051.68%
Inventory
Prepaid Expenses
Receivables	$2.034B	$1.854B	$1.610B
Other Receivables	$1.000B	$694.0M	$915.0M
Total Short-Term Assets	$5.869B	$5.206B	$4.861B
YoY Change	12.73%	14.64%	62.79%
LONG-TERM ASSETS
Property, Plant & Equipment	$701.9M	$567.9M	$540.8M
YoY Change	23.6%	4.41%	4.68%
Goodwill	$4.168B	$2.698B	$2.690B
YoY Change	54.5%	-0.42%	-0.43%
Intangibles	$682.6M	$336.9M	$291.5M
YoY Change	102.61%	10.46%	-5.17%
Long-Term Investments	$404.0M	$357.0M	$372.0M
YoY Change	13.17%	-5.05%	-0.27%
Other Assets	$197.2M	$192.7M	$164.4M
YoY Change	2.34%	23.92%	78.31%
Total Long-Term Assets	$7.804B	$4.820B	$4.758B
YoY Change	61.93%	2.25%	4.15%
TOTAL ASSETS
Total Short-Term Assets	$5.869B	$5.206B	$4.861B
Total Long-Term Assets	$7.804B	$4.820B	$4.758B
Total Assets	$13.67B	$10.03B	$9.619B
YoY Change	36.38%	8.33%	27.33%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.289B	$1.261B	$995.0M
YoY Change	2.22%	26.99%	25.31%
Accrued Expenses	$1.883B	$1.605B	$1.206B
YoY Change	17.32%	13.11%	29.54%
Deferred Revenue
YoY Change
Short-Term Debt	$120.1M	$32.70M	$83.70M
YoY Change	267.28%	-57.75%	30.37%
Long-Term Debt Due	$120.0M	$33.00M	$84.00M
YoY Change	263.64%	-57.14%	31.25%
Total Short-Term Liabilities	$5.490B	$4.762B	$4.335B
YoY Change	15.3%	10.39%	67.86%
LONG-TERM LIABILITIES
Long-Term Debt	$1.177B	$656.0M	$901.0M
YoY Change	79.42%	-5.07%	-19.41%
Other Long-Term Liabilities	$436.2M	$387.3M	$328.3M
YoY Change	12.63%	16.55%	84.96%
Total Long-Term Liabilities	$436.2M	$387.3M	$328.3M
YoY Change	12.63%	16.55%	84.96%
TOTAL LIABILITIES
Total Short-Term Liabilities	$5.490B	$4.762B	$4.335B
Total Long-Term Liabilities	$436.2M	$387.3M	$328.3M
Total Liabilities	$8.459B	$6.291B	$6.046B
YoY Change	34.47%	7.13%	38.07%
SHAREHOLDERS EQUITY
Retained Earnings	$3.588B	$3.096B	$2.913B
YoY Change	15.91%	16.86%	16.93%
Common Stock	$1.963B	$1.058B	$1.050B
YoY Change	85.6%	1.9%	1.69%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$0.00
YoY Change
Treasury Stock Shares	0.000 shares
Shareholders Equity	$5.118B	$3.692B	$3.532B
YoY Change
Total Liabilities & Shareholders Equity	$13.67B	$10.03B	$9.619B
YoY Change	36.38%	8.33%	27.33%

Cashflow Statement

Concept	2019 Q4	2018 Q4	2018 Q3
OPERATING ACTIVITIES
Net Income	$274.4M	$201.3M	$134.9M
YoY Change	36.31%	163.48%	37.23%
Depreciation, Depletion And Amortization	$56.80M	$55.00M	$42.70M
YoY Change	3.27%	22.49%	2.15%
Cash From Operating Activities	$735.3M	$604.4M	$267.6M
YoY Change	21.66%	16.01%	-15.4%
INVESTING ACTIVITIES
Capital Expenditures	-$135.9M	-$64.00M	-$39.10M
YoY Change	112.34%	15.11%	12.03%
Acquisitions
YoY Change
Other Investing Activities	$80.30M	-$69.20M	-$24.40M
YoY Change	-216.04%	-1117.65%	662.5%
Cash From Investing Activities	-$55.60M	-$133.2M	-$63.50M
YoY Change	-58.26%	172.95%	66.67%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-610.0M	-313.8M	-210.7M
YoY Change	94.39%	-31.5%	-15.62%
NET CHANGE
Cash From Operating Activities	735.3M	604.4M	267.6M
Cash From Investing Activities	-55.60M	-133.2M	-63.50M
Cash From Financing Activities	-610.0M	-313.8M	-210.7M
Net Change In Cash	69.70M	157.4M	-6.600M
YoY Change	-55.72%	1016.31%	-123.16%
FREE CASH FLOW
Cash From Operating Activities	$735.3M	$604.4M	$267.6M
Capital Expenditures	-$135.9M	-$64.00M	-$39.10M
Free Cash Flow	$871.2M	$668.4M	$306.7M
YoY Change	30.34%	15.92%	-12.67%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0001037976
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	52000000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	68100000	USD
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.72
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.82
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.86
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	45599418	shares
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	51549654	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	45599418	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	51549654	shares
CY2018Q2	us-gaap	Fair Value Assets Level1 To Level2 Transfers Amount FairValueAssetsLevel1ToLevel2TransfersAmount	0	USD
CY2018Q2	us-gaap	Fair Value Assets Level2 To Level1 Transfers Amount FairValueAssetsLevel2ToLevel1TransfersAmount	0	USD
CY2019Q2	us-gaap	Fair Value Assets Level2 To Level1 Transfers Amount FairValueAssetsLevel2ToLevel1TransfersAmount	0	USD
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Entity File Number EntityFileNumber	1-13145
CY2019	dei	Entity Registrant Name EntityRegistrantName	Jones Lang LaSalle Incorporated
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	36-4150422
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	200 East Randolph Dr,
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Chicago,
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	IL
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	60601
CY2019	dei	City Area Code CityAreaCode	(312)
CY2019	dei	Local Phone Number LocalPhoneNumber	782-5800
CY2019	dei	Security12b Title Security12bTitle	Common Stock, par value $0.01
CY2019	dei	Trading Symbol TradingSymbol	JLL
CY2019	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2019	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2019	dei	Entity Small Business EntitySmallBusiness	false
CY2019	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019	dei	Entity Shell Company EntityShellCompany	false
CY2019Q2	dei	Entity Public Float EntityPublicFloat	6378765436	USD
CY2020Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	51565299	shares
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	451900000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	480900000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	2034300000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1854000000.0	USD
CY2019Q4	us-gaap	Notes And Loans Receivable Net Current NotesAndLoansReceivableNetCurrent	472800000	USD
CY2018Q4	us-gaap	Notes And Loans Receivable Net Current NotesAndLoansReceivableNetCurrent	363000000.0	USD
CY2019Q4	jll	Accounts Receivable Reimbursedby Client Current AccountsReceivableReimbursedbyClientCurrent	1671200000	USD
CY2018Q4	jll	Accounts Receivable Reimbursedby Client Current AccountsReceivableReimbursedbyClientCurrent	1540500000	USD
CY2019Q4	jll	Loans Receivable Gross Mortgage Warehouse Lending. LoansReceivableGrossMortgageWarehouseLending.	527100000	USD
CY2018Q4	jll	Loans Receivable Gross Mortgage Warehouse Lending. LoansReceivableGrossMortgageWarehouseLending.	331200000	USD
CY2019Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	333400000	USD
CY2018Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	314700000	USD
CY2019Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	377900000	USD
CY2018Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	321700000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	5868600000	USD
CY2018Q4	us-gaap	Assets Current AssetsCurrent	5206000000.0	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	701900000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	567900000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	804400000	USD
CY2018Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	0	USD
CY2019Q4	us-gaap	Goodwill Goodwill	4168200000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	2697800000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	682600000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	336900000	USD
CY2019Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	404200000	USD
CY2018Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	356900000	USD
CY2019Q4	us-gaap	Long Term Accounts Notes And Loans Receivable Net Noncurrent LongTermAccountsNotesAndLoansReceivableNetNoncurrent	250200000	USD
CY2018Q4	us-gaap	Long Term Accounts Notes And Loans Receivable Net Noncurrent LongTermAccountsNotesAndLoansReceivableNetNoncurrent	199000000.0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	245400000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	210100000	USD
CY2019Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	349900000	USD
CY2018Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	258200000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	197200000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	192700000	USD
CY2019Q4	us-gaap	Assets Assets	13672600000	USD
CY2018Q4	us-gaap	Assets Assets	10025500000	USD
CY2019Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	1289400000	USD
CY2018Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	1261400000	USD
CY2019Q4	jll	Accounts Payable Reimbursedby Client Current AccountsPayableReimbursedbyClientCurrent	1245800000	USD
CY2018Q4	jll	Accounts Payable Reimbursedby Client Current AccountsPayableReimbursedbyClientCurrent	1090700000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	1729200000	USD
CY2018Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	1604500000	USD
CY2019Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	120100000	USD
CY2018Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	32700000	USD
CY2019Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	158800000	USD
CY2018Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	190400000	USD
CY2019Q4	us-gaap	Business Combination Contingent Consideration Liability Current BusinessCombinationContingentConsiderationLiabilityCurrent	74400000	USD
CY2018Q4	us-gaap	Business Combination Contingent Consideration Liability Current BusinessCombinationContingentConsiderationLiabilityCurrent	78500000	USD
CY2019Q4	us-gaap	Warehouse Agreement Borrowings WarehouseAgreementBorrowings	515900000	USD
CY2018Q4	us-gaap	Warehouse Agreement Borrowings WarehouseAgreementBorrowings	317900000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	153400000	USD
CY2018Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	0	USD
CY2019Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	203200000	USD
CY2018Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	185700000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	5490200000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	4761800000	USD
CY2019Q4	jll	Longterm Lineof Credit Noncurrent Netof Debt Issuance Costs LongtermLineofCreditNoncurrentNetofDebtIssuanceCosts	512700000	USD
CY2018Q4	jll	Longterm Lineof Credit Noncurrent Netof Debt Issuance Costs LongtermLineofCreditNoncurrentNetofDebtIssuanceCosts	-15900000	USD
CY2019Q4	us-gaap	Senior Long Term Notes SeniorLongTermNotes	664600000	USD
CY2018Q4	us-gaap	Senior Long Term Notes SeniorLongTermNotes	671500000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	106000000.0	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	32700000	USD
CY2019Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	374300000	USD
CY2018Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	277800000	USD
CY2019Q4	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	124100000	USD
CY2018Q4	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	175800000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	751200000	USD
CY2018Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	0	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	436200000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	387300000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	8459300000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	6291000000.0	USD
CY2019Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	8600000	USD
CY2018Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	0	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	500000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	500000	USD
CY2019Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1962800000	USD
CY2018Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1057300000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3588300000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3095700000	USD
CY2019Q4	us-gaap	Common Stock Held In Trust CommonStockHeldInTrust	5700000	USD
CY2018Q4	us-gaap	Common Stock Held In Trust CommonStockHeldInTrust	5800000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-427800000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-456200000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	5118100000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	3691500000	USD
CY2019Q4	us-gaap	Minority Interest MinorityInterest	86600000	USD
CY2018Q4	us-gaap	Minority Interest MinorityInterest	43000000.0	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5204700000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3734500000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	13672600000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	10025500000	USD
CY2019	jll	Revenue Before Reimbursements RevenueBeforeReimbursements	10030600000	USD
CY2018	jll	Revenue Before Reimbursements RevenueBeforeReimbursements	9089500000	USD
CY2017	jll	Revenue Before Reimbursements RevenueBeforeReimbursements	7967400000	USD
CY2019	jll	Reimbursement Revenues ReimbursementRevenues	7952600000	USD
CY2018	jll	Reimbursement Revenues ReimbursementRevenues	7228900000	USD
CY2017	jll	Reimbursement Revenues ReimbursementRevenues	6485800000	USD
CY2019	us-gaap	Revenues Revenues	17983200000	USD
CY2018	us-gaap	Revenues Revenues	16318400000	USD
CY2017	us-gaap	Revenues Revenues	14453200000	USD
CY2019	us-gaap	Labor And Related Expense LaborAndRelatedExpense	5812700000	USD
CY2018	us-gaap	Labor And Related Expense LaborAndRelatedExpense	5206800000	USD
CY2017	us-gaap	Labor And Related Expense LaborAndRelatedExpense	4622400000	USD
CY2019	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	3115700000	USD
CY2018	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	2950900000	USD
CY2017	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	2601200000	USD
CY2019	jll	Costof Reimbursable Expenses CostofReimbursableExpenses	7952600000	USD
CY2018	jll	Costof Reimbursable Expenses CostofReimbursableExpenses	7228900000	USD
CY2017	jll	Costof Reimbursable Expenses CostofReimbursableExpenses	6485800000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	202400000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	186100000	USD
CY2017	us-gaap	Depreciation And Amortization DepreciationAndAmortization	167200000	USD
CY2019	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	184400000	USD
CY2018	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	38800000	USD
CY2017	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	30700000	USD
CY2019	us-gaap	Operating Expenses OperatingExpenses	17267800000	USD
CY2018	us-gaap	Operating Expenses OperatingExpenses	15611500000	USD
CY2017	us-gaap	Operating Expenses OperatingExpenses	13907300000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	715400000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	706900000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	545900000	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-56400000	USD
CY2018	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-51100000	USD
CY2017	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-56200000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	36300000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	32800000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	44400000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	2300000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	17400000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1700000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	697600000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	706000000.0	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	535800000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	159700000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	214300000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	256300000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	537900000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	491700000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	279500000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	2600000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	7200000	USD
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	3100000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	535300000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	484500000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	276400000	USD
CY2019	us-gaap	Dividends Share Based Compensation DividendsShareBasedCompensation	900000	USD
CY2018	us-gaap	Dividends Share Based Compensation DividendsShareBasedCompensation	400000	USD
CY2017	us-gaap	Dividends Share Based Compensation DividendsShareBasedCompensation	400000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	534400000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	484100000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	276000000.0	USD
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	10.98
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	10.64
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.09
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	48647000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	45517000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	45316000	shares
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	10.87
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	10.54
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.03
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	49154000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	45931000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	45758000	shares
CY2019	us-gaap	Net Income Loss NetIncomeLoss	535300000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	484500000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	276400000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	14600000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-3100000	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-8200000	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	43000000.0	USD
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-118200000	USD
CY2017	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	202000000.0	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	563700000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	369400000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	486600000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2888500000	USD
CY2017	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	279600000	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	3600000	USD
CY2017	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	6600000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	24900000	USD
CY2017	us-gaap	New Accounting Pronouncement Or Change In Accounting Principle Effect Of Adoption Quantification NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification	0	USD
CY2017	jll	Increase Decrease In Common Stock Held In Trust IncreaseDecreaseInCommonStockHeldInTrust	100000	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	33100000	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-8200000	USD
CY2017	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	202000000.0	USD
CY2017	us-gaap	Minority Interest Period Increase Decrease MinorityInterestPeriodIncreaseDecrease	9900000	USD
CY2017	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	1100000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3378200000	USD
CY2018	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	491700000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	2900000	USD
CY2018	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	12400000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	26800000	USD
CY2018	jll	Increase Decrease In Common Stock Held In Trust IncreaseDecreaseInCommonStockHeldInTrust	100000	USD
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	37800000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-3100000	USD
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-118200000	USD
CY2018	us-gaap	Minority Interest Period Increase Decrease MinorityInterestPeriodIncreaseDecrease	-2300000	USD
CY2018	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	2400000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3734500000	USD
CY2019	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	537700000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	3700000	USD
CY2019	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	841200000	USD
CY2019	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	13600000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	74200000	USD
CY2019	jll	Increase Decrease In Common Stock Held In Trust IncreaseDecreaseInCommonStockHeldInTrust	100000	USD
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	42700000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	14600000	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	43000000.0	USD
CY2019	us-gaap	Minority Interest Period Increase Decrease MinorityInterestPeriodIncreaseDecrease	41200000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5204700000	USD
CY2019	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	200000	USD
CY2017	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	-100000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	537900000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	491700000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	279500000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	202400000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	186100000	USD
CY2017	us-gaap	Depreciation And Amortization DepreciationAndAmortization	167200000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	36300000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	32800000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	44400000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-900000	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	12900000	USD
CY2017	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-3500000	USD
CY2019	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	21000000.0	USD
CY2018	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	59500000	USD
CY2017	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	30300000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	30800000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	18800000	USD
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	26300000	USD
CY2019	us-gaap	Other Amortization Of Deferred Charges OtherAmortizationOfDeferredCharges	74200000	USD
CY2018	us-gaap	Other Amortization Of Deferred Charges OtherAmortizationOfDeferredCharges	26800000	USD
CY2017	us-gaap	Other Amortization Of Deferred Charges OtherAmortizationOfDeferredCharges	24900000	USD
CY2019	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-4700000	USD
CY2018	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	1200000	USD
CY2017	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-10100000	USD
CY2019	us-gaap	Accretion Expense AccretionExpense	5300000	USD
CY2018	us-gaap	Accretion Expense AccretionExpense	4900000	USD
CY2017	us-gaap	Accretion Expense AccretionExpense	6200000	USD
CY2019	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-14600000	USD
CY2018	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-17100000	USD
CY2017	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-20700000	USD
CY2019	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	330000000.0	USD
CY2018	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	229500000	USD
CY2017	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	203700000	USD
CY2019	jll	Increase Decreasein Reimbursable Receivablesand Reimbursable Payables IncreaseDecreaseinReimbursableReceivablesandReimbursablePayables	26200000	USD
CY2018	jll	Increase Decreasein Reimbursable Receivablesand Reimbursable Payables IncreaseDecreaseinReimbursableReceivablesandReimbursablePayables	-215600000	USD
CY2017	jll	Increase Decreasein Reimbursable Receivablesand Reimbursable Payables IncreaseDecreaseinReimbursableReceivablesandReimbursablePayables	-34500000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	110000000.0	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	229200000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	114500000	USD
CY2019	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	18700000	USD
CY2018	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	25200000	USD
CY2017	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	44000000.0	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-64700000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	372400000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	435700000	USD
CY2019	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	154700000	USD
CY2018	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	207400000	USD
CY2017	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	276800000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	483800000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	604100000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	798700000	USD
CY2019	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	187800000	USD
CY2018	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	161900000	USD
CY2017	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	151400000	USD
CY2019	jll	Netinvestmentactivitylessthanwhollyowned Netinvestmentactivitylessthanwhollyowned	79200000	USD
CY2018	jll	Netinvestmentactivitylessthanwhollyowned Netinvestmentactivitylessthanwhollyowned	14300000	USD
CY2017	jll	Netinvestmentactivitylessthanwhollyowned Netinvestmentactivitylessthanwhollyowned	2300000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	801300000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	101300000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	18700000	USD
CY2019	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	137700000	USD
CY2018	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	58800000	USD
CY2017	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	40100000	USD
CY2019	us-gaap	Proceeds From Real Estate And Real Estate Joint Ventures ProceedsFromRealEstateAndRealEstateJointVentures	113800000	USD
CY2018	us-gaap	Proceeds From Real Estate And Real Estate Joint Ventures ProceedsFromRealEstateAndRealEstateJointVentures	51900000	USD
CY2017	us-gaap	Proceeds From Real Estate And Real Estate Joint Ventures ProceedsFromRealEstateAndRealEstateJointVentures	44700000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-42500000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-4000000.0	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	3000000.0	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1049700000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-280400000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-170800000	USD
CY2019	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	USD
CY2017	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	395700000	USD
CY2019	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	5864000000.0	USD
CY2018	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	3145000000.0	USD
CY2017	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	3072000000.0	USD
CY2019	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	5339000000.0	USD
CY2018	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	3145000000.0	USD
CY2017	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	3997000000.0	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	280800000	USD
CY2019	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	86800000	USD
CY2018	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-41400000	USD
CY2017	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-15900000	USD
CY2019	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	77300000	USD
CY2018	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	57100000	USD
CY2017	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	47000000.0	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	13600000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	12400000	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	6600000	USD
CY2019	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	3700000	USD
CY2018	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	2900000	USD
CY2017	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	3600000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	42700000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	37800000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	33100000	USD
CY2019	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	40600000	USD
CY2018	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	3600000	USD
CY2017	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	7500000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	62100000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	900000	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-2700000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	584600000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-141300000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-623500000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-800000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-19900000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	13300000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	17900000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	162500000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	17700000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	634200000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	471700000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	454000000.0	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	652100000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	634200000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	471700000	USD
CY2019Q4	us-gaap	Restricted Cash RestrictedCash	200200000	USD
CY2018Q4	us-gaap	Restricted Cash RestrictedCash	153300000	USD
CY2017Q4	us-gaap	Restricted Cash RestrictedCash	203700000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	58500000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	49200000	USD
CY2017	us-gaap	Interest Paid InterestPaid	47600000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	153400000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	144700000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	171200000	USD
CY2019	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	846100000	USD
CY2018	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	11600000	USD
CY2017	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	11500000	USD
CY2019	jll	Business Combinations Guaranteed Deferred Acquisition Obligation BusinessCombinationsGuaranteedDeferredAcquisitionObligation	17000000.0	USD
CY2018	jll	Business Combinations Guaranteed Deferred Acquisition Obligation BusinessCombinationsGuaranteedDeferredAcquisitionObligation	3900000	USD
CY2017	jll	Business Combinations Guaranteed Deferred Acquisition Obligation BusinessCombinationsGuaranteedDeferredAcquisitionObligation	1800000	USD
CY2019	us-gaap	Nature Of Operations NatureOfOperations	<div style="line-height:130%;font-size:10pt;padding-left:0px;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">1.</span></div><div style="line-height:130%;text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">ORGANIZATION</span></div><div style="line-height:130%;padding-bottom:8px;padding-top:8px;text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Jones Lang LaSalle Incorporated ("Jones Lang LaSalle," which we may refer to as "JLL," "we," "us," "our," or the "Company") was incorporated in 1997. We have corporate offices worldwide and over </span><span style="font-family:inherit;font-size:10pt;"><span>93,000</span></span><span style="font-family:inherit;font-size:10pt;"> employees, including approximately </span><span style="font-family:inherit;font-size:10pt;"><span>38,800</span></span><span style="font-family:inherit;font-size:10pt;"> employees whose costs are reimbursed by our clients. We provide comprehensive integrated real estate and investment management expertise on a local, regional and global level to owner, occupier and investor clients. We are an industry leader in property and facility management services, with a managed portfolio of approximately </span><span style="font-family:inherit;font-size:10pt;"><span>5.1 billion</span></span><span style="font-family:inherit;font-size:10pt;"> square feet worldwide as of </span><span style="font-family:inherit;font-size:10pt;">December 31, 2019</span><span style="font-family:inherit;font-size:10pt;">. LaSalle Investment Management ("LaSalle") is one of the world's largest and most diversified real estate investment management firms, with </span><span style="font-family:inherit;font-size:10pt;"><span>$67.6 billion</span></span><span style="font-family:inherit;font-size:10pt;"> of assets under management (unaudited) as of </span><span style="font-family:inherit;font-size:10pt;">December 31, 2019</span><span style="font-family:inherit;font-size:10pt;">.</span></div><div style="line-height:130%;padding-bottom:0px;padding-top:8px;text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The following table shows the revenue for the major product categories into which we group our services.</span></div><div style="line-height:130%;padding-bottom:8px;padding-top:0px;text-align:left;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="8"/></tr><tr><td style="width:46%;"/><td style="width:1%;"/><td style="width:16%;"/><td style="width:1%;"/><td style="width:17%;"/><td style="width:1%;"/><td style="width:17%;"/><td style="width:1%;"/></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="7" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:center;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">Year Ended December 31,</span></div></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">($ in millions)</span></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">2019</span></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">2018</span></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">2017</span></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">Real Estate Services:</span></div></td><td colspan="3" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:12px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">Leasing</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">$</span></div></td><td style="vertical-align:bottom;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;"><span>2,524.0</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>2,372.1</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>2,051.9</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:12px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">Capital Markets</span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;"><span>1,542.2</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>1,145.4</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>1,149.4</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:12px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">Property & Facility Management</span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;"><span>9,364.7</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>8,782.8</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>7,821.3</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:12px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">Project & Development Services</span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;"><span>3,121.5</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>2,669.0</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>2,344.5</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:12px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">Advisory, Consulting and Other</span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;"><span>904.7</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>815.2</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>730.3</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">LaSalle</span></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;"><span>526.1</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>533.9</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>355.8</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">Total revenue</span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">$</span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;"><span>17,983.2</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>16,318.4</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><span>14,453.2</span></span></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr></table></div><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:130%;padding-bottom:12px;padding-top:8px;text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">We work for a broad range of clients representing a wide variety of industries in markets throughout the world. Our clients vary greatly in size and include for-profit and not-for-profit entities of all kinds, public-private partnerships and governmental (public sector) entities looking to outsource real estate services. We provide real estate investment management services on a global basis for both public and private assets through LaSalle. Our integrated global business model, industry-leading research capabilities, client relationship management focus, consistent worldwide service delivery and strong brand are attributes that enhance our services.</span></div>
CY2019Q4	dei	Entity Number Of Employees EntityNumberOfEmployees	93000	employee
CY2019Q4	jll	Number Of Employees Whose Costs Are Reimbursed By Clients NumberOfEmployeesWhoseCostsAreReimbursedByClients	38800	employee
CY2019Q4	us-gaap	Area Of Real Estate Property AreaOfRealEstateProperty	5100000000	sqft
CY2019Q4	us-gaap	Assets Under Management Carrying Amount AssetsUnderManagementCarryingAmount	67600000000	USD
CY2019	us-gaap	Revenues Revenues	17983200000	USD
CY2018	us-gaap	Revenues Revenues	16318400000	USD
CY2017	us-gaap	Revenues Revenues	14453200000	USD
CY2016Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	6800000	USD
CY2017	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	-3500000	USD
CY2017	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	-100000	USD
CY2017	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToNoncontrollingInterest	600000	USD
CY2017Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	3800000	USD
CY2018	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	3800000	USD
CY2018Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	0	USD
CY2019	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	-8400000	USD
CY2019	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	200000	USD
CY2019Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	8600000	USD
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:130%;padding-bottom:8px;padding-top:8px;text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">Use of Estimates</span></div><div style="line-height:130%;padding-bottom:8px;padding-top:8px;text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The preparation of the Consolidated Financial Statements in conformity with U.S. GAAP requires us to make estimates and assumptions about future events that affect reported amounts of assets and liabilities, disclosure of contingent assets and liabilities, and reported amounts of revenue and expenses during the reporting periods. Such estimates include the value and allocation of purchase consideration, valuation of accounts receivable, reimbursable receivables, warehouse receivables, investments in real estate ventures, goodwill, intangible assets, derivative financial instruments, other long-lived assets, earn-out liabilities, legal contingencies, assumptions used in the calculation of income taxes, incentive compensation, self-insurance program liabilities, and retirement and other post-employment benefits, among others.</span></div><div style="line-height:130%;padding-bottom:8px;padding-top:8px;text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">These estimates and assumptions are based on management's best estimate and judgment. We evaluate these estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment, which we believe to be reasonable under the circumstances. We adjust such estimates and assumptions when facts and circumstances dictate. Market factors, such as illiquid credit markets, volatile equity markets and foreign currency exchange rate fluctuations can increase the uncertainty in such estimates and assumptions. Because future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in those estimates resulting from continuing changes in the economic environment will be reflected in the financial statements in future periods. Although actual amounts may differ from such estimated amounts, we believe such differences are not likely to be material.</span></div>
CY2019	us-gaap	Revenue Recognition Services Commissions RevenueRecognitionServicesCommissions	<div style="line-height:130%;padding-left:4px;padding-bottom:8px;padding-top:8px;text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-style:italic;">Leasing</span></div><div style="line-height:130%;padding-bottom:8px;padding-top:8px;text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Leasing revenue is earned from brokerage commissions as we represent tenants and/or landlords in connection with real estate leases. Our performance obligation is to facilitate the execution of a lease agreement, which is satisfied at a point in time, upon lease execution. Generally, we are either entitled to the full consideration upon lease execution or in part upon lease execution with the remainder upon the occurrence of a future event outside of our control (e.g. tenant occupancy, lease commencement, or rent commencement). The majority of the events that preclude our entitlement to the full consideration upon lease execution are considered to be “normal course of business” and, therefore, do not result in a constraint upon the recognition of revenue. In the infrequent instance our fee entitlement in a contract with a customer is predicated on the occurrence of a future event(s) uncertain of occurring, we constrain the recognition of revenue until the uncertainty is resolved or the future event occurs. Generally, less than </span><span style="font-family:inherit;font-size:10pt;"><span>5%</span></span><span style="font-family:inherit;font-size:10pt;"> of our Leasing revenue recognized in a period had previously been constrained.</span></div>
CY2019	jll	Percentageof Revenue Constrainedduetouncertainty PercentageofRevenueConstrainedduetouncertainty	0.05
CY2019	us-gaap	Revenue Recognition Services Management Fees RevenueRecognitionServicesManagementFees	<div style="line-height:130%;padding-bottom:8px;padding-top:8px;text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Property Management provides on-site day-to-day real estate management services for owners of office, industrial, retail, multifamily residential and various other types of properties, representing a series of daily performance obligations delivered over time. Pricing is generally in the form of a monthly management fee based upon property-level cash receipts, square footage under management or some other variable metric.</span></div><div style="line-height:130%;padding-bottom:8px;padding-top:8px;text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Although we are principal in limited situations, we generally act as agent on behalf of our Property Management clients in relation to third-party vendors and subcontractors engaged to deliver operational services to our clients' properties. In these situations, we arrange, but do not control, the services provided by third-party vendors and subcontractors prior to the transfer of the services to the client. As a result, the costs incurred on behalf of clients, along with the corresponding revenue, are presented net on our Consolidated Statements of Comprehensive Income.</span></div><div style="line-height:130%;padding-bottom:8px;padding-top:8px;text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Facility Management primarily provides comprehensive, on-site day-to-day real estate management services to corporations and institutions across a broad range of industries that outsource the management of the real estate they occupy, representing a series of daily performance obligations delivered over time. Pricing generally includes a management fee and, in many instances, an incentive fee or other form of variable consideration.</span></div><div style="line-height:130%;padding-bottom:8px;padding-top:8px;text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Although we may act as agent on behalf of our clients with respect to certain mandates, we generally act as principal for our Facility Management contracts with respect to third-party vendors and subcontractors engaged to deliver operational services to our clients' facilities. In these situations, we control the services provided by such third-party vendors and subcontractors prior to the transfer of the services to the client. As a result, the costs incurred on behalf of our clients, along with the corresponding reimbursement revenue, are presented gross on our Consolidated Statements of Comprehensive Income.</span></div>
CY2019Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	419300000	USD
CY2018Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	396200000	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	87700000	USD
CY2018Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	98900000	USD
CY2019	jll	Percentageof Revenue Remaining Performance Obligation PercentageofRevenueRemainingPerformanceObligation	0.05
CY2019Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	586600000	USD
CY2018Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	531400000	USD
CY2019	jll	Bank Servicing Fees. BankServicingFees.	63000000.0	USD
CY2018	jll	Bank Servicing Fees. BankServicingFees.	49600000	USD
CY2017	jll	Bank Servicing Fees. BankServicingFees.	43300000	USD
CY2019Q4	jll	Mortgage Servicing Rights MortgageServicingRights	376400000	USD
CY2018Q4	jll	Mortgage Servicing Rights MortgageServicingRights	193800000	USD
CY2019Q4	us-gaap	Mortgage Backed Securities Held To Maturity Fair Value Disclosure MortgageBackedSecuritiesHeldToMaturityFairValueDisclosure	423700000	USD
CY2018Q4	us-gaap	Mortgage Backed Securities Held To Maturity Fair Value Disclosure MortgageBackedSecuritiesHeldToMaturityFairValueDisclosure	246800000	USD
CY2019	us-gaap	Depreciation Depreciation	157600000	USD
CY2018	us-gaap	Depreciation Depreciation	156500000	USD
CY2017	us-gaap	Depreciation Depreciation	136000000.0	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1362600000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1156200000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	660700000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	588300000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	701900000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	567900000	USD
CY2019Q4	jll	Equity Method Investment Ownership Percentage Minimum EquityMethodInvestmentOwnershipPercentageMinimum	0.01
CY2019Q4	jll	Equity Method Investment Ownership Percentage Maximum EquityMethodInvestmentOwnershipPercentageMaximum	0.10
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-2400000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-4100000	USD
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-4800000	USD
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	jll	Revenue Before Reimbursements RevenueBeforeReimbursements	10030600000	USD
CY2018	jll	Revenue Before Reimbursements RevenueBeforeReimbursements	9089500000	USD
CY2017	jll	Revenue Before Reimbursements RevenueBeforeReimbursements	7967400000	USD
CY2019	jll	Reimbursement Revenues ReimbursementRevenues	7952600000	USD
CY2018	jll	Reimbursement Revenues ReimbursementRevenues	7228900000	USD
CY2017	jll	Reimbursement Revenues ReimbursementRevenues	6485800000	USD
CY2019	us-gaap	Revenues Revenues	17983200000	USD
CY2018	us-gaap	Revenues Revenues	16318400000	USD
CY2017	us-gaap	Revenues Revenues	14453200000	USD
CY2019	jll	Segment Reporting Information Operating Expenses SegmentReportingInformationOperatingExpenses	9130800000	USD
CY2018	jll	Segment Reporting Information Operating Expenses SegmentReportingInformationOperatingExpenses	8343800000	USD
CY2017	jll	Segment Reporting Information Operating Expenses SegmentReportingInformationOperatingExpenses	7390800000	USD
CY2019	jll	Reimbursement Revenues ReimbursementRevenues	7952600000	USD
CY2018	jll	Reimbursement Revenues ReimbursementRevenues	7228900000	USD
CY2017	jll	Reimbursement Revenues ReimbursementRevenues	6485800000	USD
CY2019	jll	Segment Operating Expensesbefore Restructuringandacquisition SegmentOperatingExpensesbeforeRestructuringandacquisition	17083400000	USD
CY2018	jll	Segment Operating Expensesbefore Restructuringandacquisition SegmentOperatingExpensesbeforeRestructuringandacquisition	15572700000	USD
CY2017	jll	Segment Operating Expensesbefore Restructuringandacquisition SegmentOperatingExpensesbeforeRestructuringandacquisition	13876600000	USD
CY2019	jll	Segment Reporting Information Operating Income Before Restructuring Charges SegmentReportingInformationOperatingIncomeBeforeRestructuringCharges	899800000	USD
CY2018	jll	Segment Reporting Information Operating Income Before Restructuring Charges SegmentReportingInformationOperatingIncomeBeforeRestructuringCharges	745700000	USD
CY2017	jll	Segment Reporting Information Operating Income Before Restructuring Charges SegmentReportingInformationOperatingIncomeBeforeRestructuringCharges	576600000	USD
CY2019	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	184400000	USD
CY2018	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	38800000	USD
CY2017	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	30700000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	715400000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	706900000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	545900000	USD
CY2018	jll	Paymentsto Acquireinvestmentpropertylessthanwhollyowned PaymentstoAcquireinvestmentpropertylessthanwhollyowned	47100000	USD
CY2017	jll	Netinvestmentactivitylessthanwhollyowned Netinvestmentactivitylessthanwhollyowned	2300000	USD
CY2019Q4	us-gaap	Assets Assets	13672600000	USD
CY2019Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	404200000	USD
CY2018Q4	us-gaap	Assets Assets	10025500000	USD
CY2018Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	356900000	USD
CY2019	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	267000000.0	USD
CY2018	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	209000000.0	USD
CY2017	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	153700000	USD
CY2019	jll	Netinvestmentactivitylessthanwhollyowned Netinvestmentactivitylessthanwhollyowned	79200000	USD
CY2019	us-gaap	Revenues Revenues	17983200000	USD
CY2018	us-gaap	Revenues Revenues	16318400000	USD
CY2017	us-gaap	Revenues Revenues	14453200000	USD
CY2019Q4	us-gaap	Assets Assets	13672600000	USD
CY2018Q4	us-gaap	Assets Assets	10025500000	USD
CY2019	jll	Percentage Of Assets From Countries Having Restrictions PercentageOfAssetsFromCountriesHavingRestrictions	0.05
CY2018	jll	Percentage Of Assets From Countries Having Restrictions PercentageOfAssetsFromCountriesHavingRestrictions	0.06
CY2019	us-gaap	Number Of Businesses Acquired NumberOfBusinessesAcquired	4	acquisition
CY2019	jll	Business Acquisition Estimated Adjustments Netof Tax BusinessAcquisitionEstimatedAdjustmentsNetofTax	39600000	USD
CY2018	jll	Business Acquisition Estimated Adjustments Netof Tax BusinessAcquisitionEstimatedAdjustmentsNetofTax	-86000000.0	USD
CY2019	jll	Business Acquisition Fair Valueof Intangible Assetat Acquisition Date BusinessAcquisitionFairValueofIntangibleAssetatAcquisitionDate	349900000	USD
CY2019	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	40400000	USD
CY2019	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	3800000	USD
CY2019	jll	Business Combinations Guaranteed Deferred Acquisition Obligation BusinessCombinationsGuaranteedDeferredAcquisitionObligation	17000000.0	USD
CY2019	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	12700000	USD
CY2019Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet	4700000	USD
CY2019Q4	jll	Redeemable Noncontrolling Interest Acquisition Date Fair Value RedeemableNoncontrollingInterestAcquisitionDateFairValue	8400000	USD
CY2019	jll	Paymentfor Contingent Consideration Liability Total PaymentforContingentConsiderationLiabilityTotal	104700000	USD
CY2019	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	1460500000	USD
CY2019Q4	us-gaap	Business Acquisition Purchase Price Allocation Goodwill Expected Tax Deductible Amount BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount	25400000	USD
CY2018	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	101300000	USD
CY2018	jll	Business Combinations Guaranteed Deferred Acquisition Obligation BusinessCombinationsGuaranteedDeferredAcquisitionObligation	3900000	USD
CY2018	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	11600000	USD
CY2018	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	60800000	USD
CY2018	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	57100000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet	1100000	USD
CY2019	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	1000000.0	USD
CY2019	us-gaap	Business Combination Provisional Information Initial Accounting Incomplete Adjustment Intangibles BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles	500000	USD
CY2019	us-gaap	Business Combination Provisional Information Initial Accounting Incomplete Adjustment Financial Liabilities BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentFinancialLiabilities	-1500000	USD
CY2018	jll	Paymentfor Contingent Consideration Liability Total PaymentforContingentConsiderationLiabilityTotal	72300000	USD
CY2018	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	1500000	USD
CY2018	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	60800000	USD
CY2018Q4	us-gaap	Business Acquisition Purchase Price Allocation Goodwill Expected Tax Deductible Amount BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount	35500000	USD
CY2019Q4	jll	Number Of Acquisitions Subject To Potential Earn Out Payments Provisions NumberOfAcquisitionsSubjectToPotentialEarnOutPaymentsProvisions	44	acquisition
CY2018Q4	jll	Number Of Acquisitions Subject To Potential Earn Out Payments Provisions NumberOfAcquisitionsSubjectToPotentialEarnOutPaymentsProvisions	54	acquisition
CY2019Q4	us-gaap	Business Combination Contingent Consideration Arrangements Range Of Outcomes Value High BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh	268900000	USD
CY2018Q4	us-gaap	Business Combination Contingent Consideration Arrangements Range Of Outcomes Value High BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh	407300000	USD
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019Q4	us-gaap	Goodwill Goodwill	4168200000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	632600000	USD
CY2019Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	50000000.0	USD
CY2017Q4	us-gaap	Goodwill Goodwill	2709300000	USD
CY2018	jll	Goodwill Additions Net Of Adjustments GoodwillAdditionsNetOfAdjustments	59000000.0	USD
CY2018	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	3900000	USD
CY2018	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-66600000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	2697800000	USD
CY2019	jll	Goodwill Additions Net Of Adjustments GoodwillAdditionsNetOfAdjustments	1461500000	USD
CY2019	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	4400000	USD
CY2019	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	13300000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	4168200000	USD
CY2017Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	470900000	USD
CY2018	jll	Finite And Indefinite Lived Intangible Assets Additions FiniteAndIndefiniteLivedIntangibleAssetsAdditions	107000000.0	USD
CY2018	jll	Adjustment For Fully Amortized Intangibles AdjustmentForFullyAmortizedIntangibles	64400000	USD
CY2018	jll	Finite And Indefinite Lived Intangible Assets Translation Adjustments FiniteAndIndefiniteLivedIntangibleAssetsTranslationAdjustments	-6800000	USD
CY2018Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	506700000	USD
CY2019	jll	Finite And Indefinite Lived Intangible Assets Additions FiniteAndIndefiniteLivedIntangibleAssetsAdditions	454000000.0	USD
CY2019	jll	Adjustment For Fully Amortized Intangibles AdjustmentForFullyAmortizedIntangibles	64100000	USD
CY2019	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	500000	USD
CY2019	jll	Finite And Indefinite Lived Intangible Assets Translation Adjustments FiniteAndIndefiniteLivedIntangibleAssetsTranslationAdjustments	1300000	USD
CY2019Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	897400000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	165900000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	72200000	USD
CY2018	jll	Accumulated Amortization Adjustmentforfully Amortized Intangibles AccumulatedAmortizationAdjustmentforfullyAmortizedIntangibles	64400000	USD
CY2018	jll	Accumulated Amortization Finite Lived Intangible Assets Translation Adjustments AccumulatedAmortizationFiniteLivedIntangibleAssetsTranslationAdjustments	-3900000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	169800000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	109800000	USD
CY2019	jll	Accumulated Amortization Adjustmentforfully Amortized Intangibles AccumulatedAmortizationAdjustmentforfullyAmortizedIntangibles	64100000	USD
CY2019	jll	Accelerated Depreciationon Intangibles AcceleratedDepreciationonIntangibles	500000	USD
CY2019	jll	Accumulated Amortization Finite Lived Intangible Assets Translation Adjustments AccumulatedAmortizationFiniteLivedIntangibleAssetsTranslationAdjustments	200000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	214800000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	682600000	USD
CY2019	us-gaap	Servicing Asset At Amortized Cost Other Than Temporary Impairments ServicingAssetAtAmortizedCostOtherThanTemporaryImpairments	16600000	USD
CY2018	us-gaap	Servicing Asset At Amortized Cost Other Than Temporary Impairments ServicingAssetAtAmortizedCostOtherThanTemporaryImpairments	11400000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	122000000.0	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	109800000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	96100000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	86600000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	74700000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	143400000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	632600000	USD
CY2019Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	404200000	USD
CY2018Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	356900000	USD
CY2019Q4	jll	Number Of Separate Property Or Fund Co Investments NumberOfSeparatePropertyOrFundCoInvestments	46	investment
CY2019Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Assets EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets	22006600000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Assets EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets	13217700000	USD
CY2019Q4	us-gaap	Equity Method Investment Summarized Financial Information Assets EquityMethodInvestmentSummarizedFinancialInformationAssets	24784800000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Assets EquityMethodInvestmentSummarizedFinancialInformationAssets	15561200000	USD
CY2019Q4	jll	Equity Method Investment Summarized Financial Information Mortgage Indebtedness EquityMethodInvestmentSummarizedFinancialInformationMortgageIndebtedness	7345100000	USD
CY2018Q4	jll	Equity Method Investment Summarized Financial Information Mortgage Indebtedness EquityMethodInvestmentSummarizedFinancialInformationMortgageIndebtedness	4968000000.0	USD
CY2019Q4	jll	Equity Method Investment Summarized Financial Information Other Borrowings EquityMethodInvestmentSummarizedFinancialInformationOtherBorrowings	1118200000	USD
CY2018Q4	jll	Equity Method Investment Summarized Financial Information Other Borrowings EquityMethodInvestmentSummarizedFinancialInformationOtherBorrowings	561700000	USD
CY2019Q4	us-gaap	Equity Method Investment Summarized Financial Information Liabilities EquityMethodInvestmentSummarizedFinancialInformationLiabilities	9853900000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Liabilities EquityMethodInvestmentSummarizedFinancialInformationLiabilities	6155800000	USD
CY2019Q4	us-gaap	Equity Method Investment Summarized Financial Information Equity EquityMethodInvestmentSummarizedFinancialInformationEquity	14930900000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Equity EquityMethodInvestmentSummarizedFinancialInformationEquity	9405400000	USD
CY2019	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	1247600000	USD
CY2018	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	1199500000	USD
CY2017	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	1319000000.0	USD
CY2019	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	831200000	USD
CY2018	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	1046300000	USD
CY2017	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	895700000	USD
CY2018Q4	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	247300000	USD
CY2017Q4	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	242300000	USD
CY2016Q4	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	212700000	USD
CY2019	jll	Investmentsin Real Estate Venturesat Fair Value Additions InvestmentsinRealEstateVenturesatFairValueAdditions	144900000	USD
CY2018	jll	Investmentsin Real Estate Venturesat Fair Value Additions InvestmentsinRealEstateVenturesatFairValueAdditions	55200000	USD
CY2017	jll	Investmentsin Real Estate Venturesat Fair Value Additions InvestmentsinRealEstateVenturesatFairValueAdditions	33500000	USD
CY2019	jll	Investmentsin Real Estate Venturesat Fair Value Distributions InvestmentsinRealEstateVenturesatFairValueDistributions	101700000	USD
CY2018	jll	Investmentsin Real Estate Venturesat Fair Value Distributions InvestmentsinRealEstateVenturesatFairValueDistributions	63800000	USD
CY2017	jll	Investmentsin Real Estate Venturesat Fair Value Distributions InvestmentsinRealEstateVenturesatFairValueDistributions	37100000	USD
CY2019	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	35300000	USD
CY2018	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	13900000	USD
CY2017	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	28100000	USD
CY2019	jll	Investmentsin Real Estate Venturesat Fair Value Foreign Currency Translation InvestmentsinRealEstateVenturesatFairValueForeignCurrencyTranslation	2800000	USD
CY2018	jll	Investmentsin Real Estate Venturesat Fair Value Foreign Currency Translation InvestmentsinRealEstateVenturesatFairValueForeignCurrencyTranslation	-300000	USD
CY2017	jll	Investmentsin Real Estate Venturesat Fair Value Foreign Currency Translation InvestmentsinRealEstateVenturesatFairValueForeignCurrencyTranslation	5100000	USD
CY2019Q4	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	328600000	USD
CY2018Q4	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	247300000	USD
CY2017Q4	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	242300000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	76400000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	26900000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	25200000	USD
CY2019	jll	Number Of Contributory Defined Benefit Pension Plans NumberOfContributoryDefinedBenefitPensionPlans	5	plan
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	38200000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	39800000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	12200000	USD
CY2019	jll	Noncurrent Federal Tax Expense NoncurrentFederalTaxExpense	700000	USD
CY2018	jll	Noncurrent Federal Tax Expense NoncurrentFederalTaxExpense	35700000	USD
CY2017	jll	Noncurrent Federal Tax Expense NoncurrentFederalTaxExpense	122200000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-12900000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-20100000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-23700000	USD
CY2019	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	26000000.0	USD
CY2018	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	55400000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	12500000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	5400000	USD
CY2019	jll	Noncurrent Stateand Local Tax Expense Benefit NoncurrentStateandLocalTaxExpenseBenefit	0	USD
CY2018	jll	Noncurrent Stateand Local Tax Expense Benefit NoncurrentStateandLocalTaxExpenseBenefit	7500000	USD
CY2017	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	110700000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	15100000	USD
CY2017	jll	Noncurrent Stateand Local Tax Expense Benefit NoncurrentStateandLocalTaxExpenseBenefit	19100000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-7000000.0	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-5000000.0	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-5000000.0	USD
CY2019	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	8100000	USD
CY2018	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	15000000.0	USD
CY2017	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	19500000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	156900000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	145300000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	141200000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-31300000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-1400000	USD
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-15100000	USD
CY2019	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	125600000	USD
CY2018	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	143900000	USD
CY2017	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	126100000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	159700000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	214300000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	256300000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2017	jll	Tax Expensefor Income Tax Provision Transition Tax TaxExpenseforIncomeTaxProvisionTransitionTax	125900000	USD
CY2018	jll	Tax Expensefor Income Tax Provision Transition Tax TaxExpenseforIncomeTaxProvisionTransitionTax	47000000.0	USD
CY2019	jll	Tax Expense Adjustmentsfor Income Tax Provision Transition Tax TaxExpenseAdjustmentsforIncomeTaxProvisionTransitionTax	-4300000	USD
CY2019	jll	Increase Or Decrease In Current Tax Expense From Utilization Of Prior Years Net Operating Loss Carryovers IncreaseOrDecreaseInCurrentTaxExpenseFromUtilizationOfPriorYearsNetOperatingLossCarryovers	-300000	USD
CY2018	jll	Increase Or Decrease In Current Tax Expense From Utilization Of Prior Years Net Operating Loss Carryovers IncreaseOrDecreaseInCurrentTaxExpenseFromUtilizationOfPriorYearsNetOperatingLossCarryovers	-22200000	USD
CY2017	jll	Increase Or Decrease In Current Tax Expense From Utilization Of Prior Years Net Operating Loss Carryovers IncreaseOrDecreaseInCurrentTaxExpenseFromUtilizationOfPriorYearsNetOperatingLossCarryovers	3000000.0	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	146500000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	148300000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	187500000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	8900000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.013
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2800000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.004
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-100000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Amortization IncomeTaxReconciliationNondeductibleExpenseAmortization	-3700000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Amortization EffectiveIncomeTaxRateReconciliationNondeductibleExpenseAmortization	-0.005
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Amortization IncomeTaxReconciliationNondeductibleExpenseAmortization	-3400000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Amortization EffectiveIncomeTaxRateReconciliationNondeductibleExpenseAmortization	-0.005
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Amortization IncomeTaxReconciliationNondeductibleExpenseAmortization	-6700000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Amortization EffectiveIncomeTaxRateReconciliationNondeductibleExpenseAmortization	-0.013
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	18900000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Other EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther	0.027
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	14600000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Other EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther	0.021
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	7000000.0	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Other EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther	0.013
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-8700000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.013
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-21100000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.030
CY2017	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-69000000.0	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.129
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	7200000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.010
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	12400000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.018
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	5800000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.011
CY2019	jll	Tax Expense Adjustmentsfor Income Tax Provision Transition Tax TaxExpenseAdjustmentsforIncomeTaxProvisionTransitionTax	-4300000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0.006
CY2018	jll	Tax Expensefor Income Tax Provision Transition Tax TaxExpenseforIncomeTaxProvisionTransitionTax	47000000.0	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0.067
CY2017	jll	Tax Expensefor Income Tax Provision Transition Tax TaxExpenseforIncomeTaxProvisionTransitionTax	125900000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0.235
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-5100000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.007
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	13700000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.019
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	159700000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.229
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	214300000	USD
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.304
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.478
CY2019Q4	jll	Number Of Countries In Which Company Has Operations That Constitute Income Tax Presence NumberOfCountriesInWhichCompanyHasOperationsThatConstituteIncomeTaxPresence	92	country
CY2019Q4	jll	Income Tax Rate Threshold Determining Very Low Rate IncomeTaxRateThresholdDeterminingVeryLowRate	0.25
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	5900000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.011
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	256300000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	145900000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	101300000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	62700000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	551700000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	604700000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	473100000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	697600000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	706000000.0	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	535800000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	268300000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	216000000.0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	26500000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	24100000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	20200000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	17500000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	141500000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	142500000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	20300000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	17700000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	15600000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	11600000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	492400000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	429400000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	70400000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	79200000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	422000000.0	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	350200000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	11500000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	14200000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	244800000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	132200000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	12900000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	5900000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	3900000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	8000000.0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	9500000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	12600000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	282600000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	172900000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	139400000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	177300000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	139400000	USD
CY2019Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	4400000	USD
CY2019Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	235300000	USD
CY2019Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	230900000	USD
CY2019Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	152200000	USD
CY2018Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	59100000	USD
CY2018Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	156200000	USD
CY2018Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	215300000	USD
CY2018Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	171200000	USD
CY2019Q4	jll	Income Tax Disclosure State Jurisdictions Number IncomeTaxDisclosureStateJurisdictionsNumber	46	state
CY2019Q4	jll	Income Tax Disclosure City Jurisdictions Number IncomeTaxDisclosureCityJurisdictionsNumber	25	city
CY2019Q4	jll	Income Tax Disclosure Other Foreign Jurisdictions Number IncomeTaxDisclosureOtherForeignJurisdictionsNumber	78	country
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	62700000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	49400000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1400000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	8300000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	24300000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	5000000.0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	10200000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	78200000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	62700000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	100000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	1600000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	1100000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	1800000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	4400000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	2800000	USD
CY2019Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	685900000	USD
CY2018Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	671400000	USD
CY2019Q4	us-gaap	Senior Long Term Notes SeniorLongTermNotes	664600000	USD
CY2018Q4	us-gaap	Senior Long Term Notes SeniorLongTermNotes	671500000	USD
CY2019Q4	invest	Derivative Notional Amount DerivativeNotionalAmount	2300000000	USD
CY2019Q4	jll	Foreign Currency Forward Contract Net Notional Value ForeignCurrencyForwardContractNetNotionalValue	1050000000.00	USD
CY2018Q4	invest	Derivative Notional Amount DerivativeNotionalAmount	1990000000	USD
CY2018Q4	jll	Foreign Currency Forward Contract Net Notional Value ForeignCurrencyForwardContractNetNotionalValue	840000000	USD
CY2019Q4	us-gaap	Common Stock Issued Employee Stock Trust CommonStockIssuedEmployeeStockTrust	5700000	USD
CY2018Q4	us-gaap	Common Stock Issued Employee Stock Trust CommonStockIssuedEmployeeStockTrust	5800000	USD
CY2019Q4	us-gaap	Bank Overdrafts BankOverdrafts	44800000	USD
CY2018Q4	us-gaap	Bank Overdrafts BankOverdrafts	17000000.0	USD
CY2019Q4	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	75300000	USD
CY2018Q4	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	15700000	USD
CY2019Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	120100000	USD
CY2018Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	32700000	USD
CY2019Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	1297400000	USD
CY2018Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	688300000	USD
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	800000	USD
CY2018Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	8600000	USD
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.036
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	167800000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	153100000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	132300000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	99400000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	81000000.0	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	257300000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	890900000	USD
CY2018	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	195300000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	197300000	USD
CY2019Q4	jll	Level Of Risk Retained Per Claim LevelOfRiskRetainedPerClaim	2500000	USD
CY2019Q4	us-gaap	Loss Contingency Receivable LossContingencyReceivable	37700000	USD
CY2018Q4	us-gaap	Loss Contingency Receivable LossContingencyReceivable	40600000	USD
CY2019Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	87100000	USD
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019Q4	us-gaap	Warehouse Agreement Borrowings WarehouseAgreementBorrowings	515900000	USD
CY2018Q4	us-gaap	Warehouse Agreement Borrowings WarehouseAgreementBorrowings	317900000	USD
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	170500000	USD
CY2019	jll	Variableand Short Term Operating Lease Expense VariableandShortTermOperatingLeaseExpense	33300000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	310700000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	11800000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	181600000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	169500000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	137800000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	113800000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	91700000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	342200000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	1036600000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	132000000.0	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	904600000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y4M24D
CY2019Q4	jll	Loansubjecttolosssharingarrangementsaggregateunpaidprincipalamount Loansubjecttolosssharingarrangementsaggregateunpaidprincipalamount	9700000000	USD
CY2018Q4	jll	Loansubjecttolosssharingarrangementsaggregateunpaidprincipalamount Loansubjecttolosssharingarrangementsaggregateunpaidprincipalamount	8400000000	USD
CY2019Q4	jll	Loanlossaccrual Loanlossaccrual	20600000	USD
CY2018Q4	jll	Loanlossaccrual Loanlossaccrual	17500000	USD
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	184400000	USD
CY2018	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	38800000	USD
CY2017	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	30700000	USD
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	28400000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	28000000.0	USD
CY2018	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	7400000	USD
CY2017	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	1900000	USD
CY2016Q4	us-gaap	Restructuring Reserve RestructuringReserve	31000000.0	USD
CY2017	us-gaap	Restructuring Charges RestructuringCharges	28800000	USD
CY2017	us-gaap	Payments For Restructuring PaymentsForRestructuring	38500000	USD
CY2017Q4	us-gaap	Restructuring Reserve RestructuringReserve	21300000	USD
CY2018	us-gaap	Restructuring Charges RestructuringCharges	31400000	USD
CY2018	us-gaap	Payments For Restructuring PaymentsForRestructuring	37600000	USD
CY2018Q4	us-gaap	Restructuring Reserve RestructuringReserve	15100000	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	128000000.0	USD
CY2019	us-gaap	Payments For Restructuring PaymentsForRestructuring	106600000	USD
CY2019Q4	us-gaap	Restructuring Reserve RestructuringReserve	36500000	USD
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019Q1	us-gaap	Revenues Revenues	3820600000	USD
CY2019Q2	us-gaap	Revenues Revenues	4266500000	USD
CY2019Q3	us-gaap	Revenues Revenues	4495600000	USD
CY2019Q4	us-gaap	Revenues Revenues	5400500000	USD
CY2019	us-gaap	Revenues Revenues	17983200000	USD
CY2019Q1	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	18600000	USD
CY2019Q2	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	25700000	USD
CY2019Q3	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	70000000.0	USD
CY2019Q4	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	70100000	USD
CY2019Q1	us-gaap	Operating Expenses OperatingExpenses	3795200000	USD
CY2019Q2	us-gaap	Operating Expenses OperatingExpenses	4116400000	USD
CY2019Q3	us-gaap	Operating Expenses OperatingExpenses	4324000000.0	USD
CY2019Q4	us-gaap	Operating Expenses OperatingExpenses	5032200000	USD
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	25400000	USD
CY2019Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	150100000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	171600000	USD
CY2019Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	368300000	USD
CY2019Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	21300000	USD
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	110500000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	128900000	USD
CY2019Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	273700000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.47
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.42
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.50
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.31
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	10.98
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.46
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.40
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.47
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.23
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	10.87
CY2018Q1	us-gaap	Revenues Revenues	3555200000	USD
CY2018Q2	us-gaap	Revenues Revenues	3903700000	USD
CY2018Q3	us-gaap	Revenues Revenues	3969800000	USD
CY2018Q4	us-gaap	Revenues Revenues	4889700000	USD
CY2018	us-gaap	Revenues Revenues	16318400000	USD
CY2018Q1	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	700000	USD
CY2018Q2	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	-11100000	USD
CY2018Q3	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	3700000	USD
CY2018Q4	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	45500000	USD
CY2018Q1	us-gaap	Operating Expenses OperatingExpenses	3501400000	USD
CY2018Q2	us-gaap	Operating Expenses OperatingExpenses	3753900000	USD
CY2018Q3	us-gaap	Operating Expenses OperatingExpenses	3778900000	USD
CY2018Q4	us-gaap	Operating Expenses OperatingExpenses	4577300000	USD
CY2018Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	53800000	USD
CY2018Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	149800000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	190900000	USD
CY2018Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	312400000	USD
CY2018Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	40300000	USD
CY2018Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	107800000	USD
CY2018Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	134900000	USD
CY2018Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	201100000	USD
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.89
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.37
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.96
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.41
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.88
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.35
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.93
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.37

Files In Submission

Name	View Source	Status
0001037976-20-000011-index-headers.html	Edgar Link	pending
0001037976-20-000011-index.html	Edgar Link	pending
0001037976-20-000011.txt	Edgar Link	pending
0001037976-20-000011-xbrl.zip	Edgar Link	pending
a2018sustaina04.jpg	Edgar Link	pending
achieveyourambitionsa10.jpg	Edgar Link	pending
beyond2017v2a09.jpg	Edgar Link	pending
chart-0ffc970052d96d7f736.jpg	Edgar Link	pending
chart-218083ceef2c5c77854.jpg	Edgar Link	pending
chart-2defa88a650d5032b0c.jpg	Edgar Link	pending
chart-3300bf4c5e3158e28de.jpg	Edgar Link	pending
chart-4991aa0818d97881ba0.jpg	Edgar Link	pending
chart-81fe4b87ed605947bc8.jpg	Edgar Link	pending
chart-aee8fced37715bb9ad3.jpg	Edgar Link	pending
chart-d1180f94b7c75690a34.jpg	Edgar Link	pending
chart-f121be7133d7561abc4.jpg	Edgar Link	pending
chart-fbee65e1702e51b69d3.jpg	Edgar Link	pending
exhibit108.htm	Edgar Link	pending
exhibit108for201910kp_image1.jpg	Edgar Link	pending
exhibit109.htm	Edgar Link	pending
exhibit109to201910k_image1a.jpg	Edgar Link	pending
exhibit211-jll201910kq4.htm	Edgar Link	pending
exhibit231-jll201910kq4.htm	Edgar Link	pending
exhibit311-jll201910kq4.htm	Edgar Link	pending
exhibit312-jll201910kq4.htm	Edgar Link	pending
exhibit321-jll201910kq4.htm	Edgar Link	pending
exhibit44.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
jll-20191231.xsd	Edgar Link	pending
jll-20191231_cal.xml	Edgar Link	unprocessable
jll-20191231_def.xml	Edgar Link	unprocessable
jll-20191231_lab.xml	Edgar Link	unprocessable
jll-20191231_pre.xml	Edgar Link	unprocessable
jll10kq42019.htm	Edgar Link	pending
jll10kq42019_htm.xml	Edgar Link	completed
jllcorporatepolicy1a01.jpg	Edgar Link	pending
jllcorporatepolicy2a03.jpg	Edgar Link	pending
jlllogonew2017smalla69.jpg	Edgar Link	pending
jlllogonew2017smalla74.jpg	Edgar Link	pending
limlogoitem1a01a24.jpg	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
new2019cs.jpg	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending
timeline2019v2.jpg	Edgar Link	pending
valuecreation19prelim.jpg	Edgar Link	pending
whatwedo2019v8.jpg	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$JLL
JONES LANG LASALLE INC Stock $jll

2019 Q4 Form 10-K Financial Statement

#000103797620000011 Filed on February 27, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$JLL JONES LANG LASALLE INC Stock $jll

2019 Q4 Form 10-K Financial Statement

#000103797620000011 Filed on February 27, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$JLL
JONES LANG LASALLE INC Stock $jll