$JHG
Janus Henderson Group PLC Stock $jhg

$jhg Overview Financials Valuation SEC Filings Company Website

2018 Q4 Form 10-K Financial Statement

#000155837020001487 Filed on February 26, 2020

Income Statement

Concept	2018 Q4	2018 Q3	2018 Q2
Revenue	$545.1M	$581.2M	$592.4M
YoY Change	-12.34%	2.14%	49.37%
Cost Of Revenue		$6.000M
YoY Change		185.71%
Gross Profit		$581.2M
YoY Change		2.52%
Gross Profit Margin		100.0%
Selling, General & Admin	$345.0M	$179.3M	$346.1M
YoY Change	-5.92%	-50.61%	22.21%
% of Gross Profit		30.85%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$17.80M	$20.80M	$15.80M
YoY Change	-20.18%	40.54%	68.09%
% of Gross Profit		3.58%
Operating Expenses	$393.3M	$179.3M	$413.2M
YoY Change	-7.5%	-58.18%	21.57%
Operating Profit	$150.0M	$148.3M	$175.3M
YoY Change		7.31%
Interest Expense	-$19.30M	$4.000M	$3.900M
YoY Change	1654.55%	185.71%	-50.0%
% of Operating Profit	-12.87%	2.7%	2.22%
Other Income/Expense, Net	$13.50M	$2.300M	$13.90M
YoY Change	-250.0%	-73.56%	-795.0%
Pretax Income	$144.2M	$138.3M	$168.7M
YoY Change	-22.68%	-6.74%	169.92%
Income Tax	$46.40M	$33.20M	$38.20M
% Of Pretax Income	32.18%	24.01%	22.64%
Net Earnings	$100.8M	$105.1M	$130.5M
YoY Change	-78.63%	5.63%	212.95%
Net Earnings / Revenue	18.49%	18.08%	22.03%
Basic Earnings Per Share	$0.54	$0.55	$0.70
Diluted Earnings Per Share	$0.54	$0.55	$0.70
COMMON SHARES
Basic Shares Outstanding		195.2M	195.8M
Diluted Shares Outstanding		195.9M	196.6M

Balance Sheet

Concept	2018 Q4	2018 Q3	2018 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.491B	$1.410B	$1.368B
YoY Change	-0.21%	-0.23%	1.94%
Cash & Equivalents	$916.6M	$796.1M	$703.8M
Short-Term Investments	$574.5M	$614.2M	$664.4M
Other Short-Term Assets	$69.40M	$78.40M	$78.80M
YoY Change	-21.85%	-3.45%	-19.59%
Inventory
Prepaid Expenses	$22.60M
Receivables	$144.4M	$174.4M	$183.7M
Other Receivables	$309.2M	$333.3M	$335.7M
Total Short-Term Assets	$2.019B	$1.996B	$1.966B
YoY Change	-9.97%	-3.73%	-4.6%
LONG-TERM ASSETS
Property, Plant & Equipment	$69.50M	$65.00M	$65.00M
YoY Change	-1.56%	-12.52%	-15.03%
Goodwill	$1.478B	$1.495B	$1.505B
YoY Change	-3.64%
Intangibles	$3.123B	$3.146B	$3.168B
YoY Change	-2.54%
Long-Term Investments
YoY Change
Other Assets	$15.50M	$220.8M	$219.5M
YoY Change	-92.98%	-4.29%	0.69%
Total Long-Term Assets	$4.893B	$4.927B	$4.957B
YoY Change	-2.73%	-1.72%	-0.29%
TOTAL ASSETS
Total Short-Term Assets	$2.019B	$1.996B	$1.966B
Total Long-Term Assets	$4.893B	$4.927B	$4.957B
Total Assets	$6.912B	$6.924B	$6.923B
YoY Change	-4.96%	-2.31%	-1.56%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$239.7M	$235.9M	$225.2M
YoY Change	-23.76%	-24.46%	-36.47%
Accrued Expenses	$345.4M	$287.1M	$228.0M
YoY Change	-13.37%	4.21%	11.17%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$0.00	$0.00	$9.400M
YoY Change	-100.0%	-100.0%	-91.85%
Total Short-Term Liabilities	$728.4M	$689.7M	$644.0M
YoY Change	-27.53%	-20.74%	-32.08%
LONG-TERM LIABILITIES
Long-Term Debt	$319.1M	$319.8M	$320.6M
YoY Change	-0.9%	-0.9%	-0.9%
Other Long-Term Liabilities	$79.20M	$131.5M	$124.0M
YoY Change	-37.74%	-1.05%	1.47%
Total Long-Term Liabilities	$398.3M	$451.3M	$444.6M
YoY Change	-11.33%	-0.94%	-0.25%
TOTAL LIABILITIES
Total Short-Term Liabilities	$728.4M	$689.7M	$644.0M
Total Long-Term Liabilities	$398.3M	$451.3M	$444.6M
Total Liabilities	$1.915B	$2.052B	$2.043B
YoY Change	-21.37%	-23.39%	-24.39%
SHAREHOLDERS EQUITY
Retained Earnings	$1.315B
YoY Change
Common Stock	$294.6M
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)	$170.8M
YoY Change
Treasury Stock Shares	$4.524M
Shareholders Equity	$4.839B	$4.872B	$4.881B
YoY Change
Total Liabilities & Shareholders Equity	$6.912B	$6.924B	$6.923B
YoY Change	-4.96%	-2.31%	-1.56%

Cashflow Statement

Concept	2018 Q4	2018 Q3	2018 Q2
OPERATING ACTIVITIES
Net Income	$100.8M	$105.1M	$130.5M
YoY Change	-78.63%	5.63%	212.95%
Depreciation, Depletion And Amortization	$17.80M	$20.80M	$15.80M
YoY Change	-20.18%	40.54%	68.09%
Cash From Operating Activities	$243.3M	$246.6M	$119.2M
YoY Change	7.7%	57.47%	-1590.0%
INVESTING ACTIVITIES
Capital Expenditures	-$11.50M	-$6.300M	-$4.800M
YoY Change	33.72%	800.0%	-25.0%
Acquisitions
YoY Change
Other Investing Activities	$24.50M	$38.20M	$49.20M
YoY Change	169.23%	-185.65%	-91.59%
Cash From Investing Activities	$13.00M	$31.90M	$44.40M
YoY Change	2500.0%	-170.42%	-92.32%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-127.8M	-182.4M	-98.40M
YoY Change	-4.34%	95.5%	-61.05%
NET CHANGE
Cash From Operating Activities	243.3M	246.6M	119.2M
Cash From Investing Activities	13.00M	31.90M	44.40M
Cash From Financing Activities	-127.8M	-182.4M	-98.40M
Net Change In Cash	128.5M	96.10M	65.20M
YoY Change	38.47%	433.89%	-79.49%
FREE CASH FLOW
Cash From Operating Activities	$243.3M	$246.6M	$119.2M
Capital Expenditures	-$11.50M	-$6.300M	-$4.800M
Free Cash Flow	$254.8M	$252.9M	$124.0M
YoY Change	8.66%	60.78%	-7850.0%

Facts In Submission

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CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
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CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	001-38103
CY2019	dei	Entity Registrant Name EntityRegistrantName	JANUS HENDERSON GROUP PLC
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	Y9
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	98-1376360
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	201 Bishopsgate
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	London
CY2019	dei	Entity Address Country EntityAddressCountry	GB
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CY2019	dei	Country Region CountryRegion	+44
CY2019	dei	City Area Code CityAreaCode	(0) 20
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CY2019	dei	Security12b Title Security12bTitle	Common Stock
CY2019	dei	Trading Symbol TradingSymbol	JHG
CY2019	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
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CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	56400000
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-119200000
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	132700000
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	514800000
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	379000000.0
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	770300000
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	30800000
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-25600000
CY2017	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-17900000
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	484000000.0
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	404600000
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	788200000
CY2019	us-gaap	Profit Loss ProfitLoss	445700000
CY2018	us-gaap	Profit Loss ProfitLoss	499600000
CY2017	us-gaap	Profit Loss ProfitLoss	658400000
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	62600000
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	62600000
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	52800000
CY2019	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	18000000.0
CY2018	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	7200000
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4700000
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-10500000
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-355600000
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	74200000
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	82400000
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	67400000
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-600000
CY2019	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	4700000
CY2019	jhg	Gain Loss On Investments Net GainLossOnInvestmentsNet	34200000
CY2018	jhg	Gain Loss On Investments Net GainLossOnInvestmentsNet	-40900000
CY2017	jhg	Gain Loss On Investments Net GainLossOnInvestmentsNet	18000000.0
CY2019	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-20000000.0
CY2019	jhg	Pension Contributions In Excess Of Pension Costs Recognized PensionContributionsInExcessOfPensionCostsRecognized	-1000000.0
CY2018	jhg	Pension Contributions In Excess Of Pension Costs Recognized PensionContributionsInExcessOfPensionCostsRecognized	16100000
CY2017	jhg	Pension Contributions In Excess Of Pension Costs Recognized PensionContributionsInExcessOfPensionCostsRecognized	20900000
CY2018	jhg	Gain From Bnp Paribas Transaction GainFromBnpParibasTransaction	22300000
CY2018	jhg	Dai Ichi Option Fair Value Adjustment DaiIchiOptionFairValueAdjustment	-26800000
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	11100000
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-4800000
CY2017	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-7200000
CY2019	jhg	Increase Decrease In Oeic And Unit Trust Receivables And Payables IncreaseDecreaseInOEICAndUnitTrustReceivablesAndPayables	-400000
CY2018	jhg	Increase Decrease In Oeic And Unit Trust Receivables And Payables IncreaseDecreaseInOEICAndUnitTrustReceivablesAndPayables	-3900000
CY2017	jhg	Increase Decrease In Oeic And Unit Trust Receivables And Payables IncreaseDecreaseInOEICAndUnitTrustReceivablesAndPayables	900000
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	16400000
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-134500000
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	117800000
CY2019	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-57000000.0
CY2018	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-89400000
CY2017	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	170900000
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	463200000
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	670800000
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	444100000
CY2017	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	417200000
CY2019	jhg	Purchases Settlements And Maturities Of Marketable Securities And Derivatives PurchasesSettlementsAndMaturitiesOfMarketableSecuritiesAndDerivatives	-1500000
CY2018	jhg	Purchases Settlements And Maturities Of Marketable Securities And Derivatives PurchasesSettlementsAndMaturitiesOfMarketableSecuritiesAndDerivatives	-35100000
CY2017	jhg	Purchases Settlements And Maturities Of Marketable Securities And Derivatives PurchasesSettlementsAndMaturitiesOfMarketableSecuritiesAndDerivatives	-7500000
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	37800000
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	29100000
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	17700000
CY2017	jhg	Proceeds From Investment Income Received By Consolidated Funds ProceedsFromInvestmentIncomeReceivedByConsolidatedFunds	-7900000
CY2017	us-gaap	Cash Divested From Deconsolidation CashDivestedFromDeconsolidation	11200000
CY2018	jhg	Proceeds From Bnp Paribas Transaction Net ProceedsFromBnpParibasTransactionNet	36500000
CY2019	us-gaap	Payments For Proceeds From Hedge Investing Activities PaymentsForProceedsFromHedgeInvestingActivities	34900000
CY2018	us-gaap	Payments For Proceeds From Hedge Investing Activities PaymentsForProceedsFromHedgeInvestingActivities	-16000000.0
CY2017	us-gaap	Payments For Proceeds From Hedge Investing Activities PaymentsForProceedsFromHedgeInvestingActivities	23700000
CY2019	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	400000
CY2017	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	200000
CY2017	jhg	Dividends Attributable To Noncontrolling Interests DividendsAttributableToNoncontrollingInterests	-2600000
CY2019	jhg	Proceeds From Volantis ProceedsFromVolantis	2300000
CY2018	jhg	Proceeds From Volantis ProceedsFromVolantis	5900000
CY2017	jhg	Proceeds From Volantis ProceedsFromVolantis	500000
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-389300000
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	100900000
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	519500000
CY2017	jhg	Proceeds From Settlement Of Convertible Note Hedge ProceedsFromSettlementOfConvertibleNoteHedge	59300000
CY2017	jhg	Payments For Settlement Of Stock Warrant PaymentsForSettlementOfStockWarrant	47800000
CY2017	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	25700000
CY2018	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	8600000
CY2017	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	6000000.0
CY2019	jhg	Payments For Repurchase Of Common Stock For Stock Based Compensation Plans PaymentsForRepurchaseOfCommonStockForStockBasedCompensationPlans	39000000.0
CY2018	jhg	Payments For Repurchase Of Common Stock For Stock Based Compensation Plans PaymentsForRepurchaseOfCommonStockForStockBasedCompensationPlans	86600000
CY2017	jhg	Payments For Repurchase Of Common Stock For Stock Based Compensation Plans PaymentsForRepurchaseOfCommonStockForStockBasedCompensationPlans	52100000
CY2019	jhg	Payments For Repurchase Of Common Stock For Share Buyback Program PaymentsForRepurchaseOfCommonStockForShareBuybackProgram	199900000
CY2018	jhg	Payments For Repurchase Of Common Stock For Share Buyback Program PaymentsForRepurchaseOfCommonStockForShareBuybackProgram	99800000
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	272400000
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	275100000
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	256000000.0
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	95300000
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	92500000
CY2019	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	14100000
CY2018	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	22700000
CY2019	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	1300000
CY2018	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	8100000
CY2017	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	5000000.0
CY2019	jhg	Proceeds From Third Party Investments In Seeded Investment Products Net Of Redemptions ProceedsFromThirdPartyInvestmentsInSeededInvestmentProductsNetOfRedemptions	320800000
CY2018	jhg	Proceeds From Third Party Investments In Seeded Investment Products Net Of Redemptions ProceedsFromThirdPartyInvestmentsInSeededInvestmentProductsNetOfRedemptions	-36500000
CY2017	jhg	Proceeds From Third Party Investments In Seeded Investment Products Net Of Redemptions ProceedsFromThirdPartyInvestmentsInSeededInvestmentProductsNetOfRedemptions	-141400000
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	1100000
CY2018	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	1300000
CY2017	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	900000
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-207000000.0
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-616800000
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-504700000
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	13000000.0
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	-32500000
CY2017	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	12100000
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-120100000
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	122400000
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	471000000.0
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	916600000
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	794200000
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	323200000
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	796500000
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	916600000
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	794200000
CY2019	us-gaap	Interest Paid Net InterestPaidNet	14600000
CY2018	us-gaap	Interest Paid Net InterestPaidNet	14800000
CY2017	us-gaap	Interest Paid Net InterestPaidNet	8000000.0
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	160000000.0
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	184700000
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	113100000
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	796500000
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	916600000
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	794200000
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1692300000
CY2017	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.0915
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	255900000
CY2017	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	600000
CY2017	jhg	Adjustments To Additional Paid In Capital Derivative Instruments Acquired AdjustmentsToAdditionalPaidInCapitalDerivativeInstrumentsAcquired	31400000
CY2017	jhg	Net Income Loss Excluding Redeemable Noncontrolling Interests NetIncomeLossExcludingRedeemableNoncontrollingInterests	657000000.0
CY2017	jhg	Other Comprehensive Income Loss Excluding Redeemable Noncontrolling Interest Net Of Tax OtherComprehensiveIncomeLossExcludingRedeemableNoncontrollingInterestNetOfTax	111900000
CY2017	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.64
CY2019	jhg	Net Income Loss Excluding Redeemable Noncontrolling Interests NetIncomeLossExcludingRedeemableNoncontrollingInterests	426500000
CY2019	jhg	Other Comprehensive Income Loss Excluding Redeemable Noncontrolling Interest Net Of Tax OtherComprehensiveIncomeLossExcludingRedeemableNoncontrollingInterestNetOfTax	56400000
CY2019	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.44
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	272400000
CY2019	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	199900000
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	700000
CY2019	jhg	Fair Value Adjustments To Redeemable Noncontrolling Interests FairValueAdjustmentsToRedeemableNoncontrollingInterests	300000
CY2019	jhg	Stock Repurchased For Stock Based Compensation Plan During Period Value StockRepurchasedForStockBasedCompensationPlanDuringPeriodValue	39000000.0
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	74200000
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4906200000
CY2017	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	13300000
CY2017	jhg	Fair Value Adjustments To Redeemable Noncontrolling Interests FairValueAdjustmentsToRedeemableNoncontrollingInterests	-400000
CY2017	jhg	Adjust Consideration For Post Combination Services Under Unvested Stock Based Compensation Plans AdjustConsiderationForPostCombinationServicesUnderUnvestedStockBasedCompensationPlans	-51800000
CY2017	jhg	Adjustments To Additional Paid In Capital Derivative Instruments Settlement AdjustmentsToAdditionalPaidInCapitalDerivativeInstrumentsSettlement	-22300000
CY2017	jhg	Adjustments To Additional Paid In Capital Tax Impact Resulting From Settlement Of Derivative Instruments AdjustmentsToAdditionalPaidInCapitalTaxImpactResultingFromSettlementOfDerivativeInstruments	-2700000
CY2017	jhg	Stock Repurchased For Stock Based Compensation Plan During Period Value StockRepurchasedForStockBasedCompensationPlanDuringPeriodValue	52100000
CY2017	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	2682000000.0
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	67400000
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	6000000.0
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4875500000
CY2017Q4	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	200000
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest Adjusted Balance1 StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	4875700000
CY2018	jhg	Net Income Loss Excluding Redeemable Noncontrolling Interests NetIncomeLossExcludingRedeemableNoncontrollingInterests	514700000
CY2018	jhg	Other Comprehensive Income Loss Excluding Redeemable Noncontrolling Interest Net Of Tax OtherComprehensiveIncomeLossExcludingRedeemableNoncontrollingInterestNetOfTax	-119200000
CY2018	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.40
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	270200000
CY2018	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	99800000
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	7600000
CY2018	jhg	Fair Value Adjustments To Redeemable Noncontrolling Interests FairValueAdjustmentsToRedeemableNoncontrollingInterests	800000
CY2018	jhg	Adjustments To Additional Paid In Capital Derivative Instruments Settlement AdjustmentsToAdditionalPaidInCapitalDerivativeInstrumentsSettlement	-38000000.0
CY2018	jhg	Stock Repurchased For Stock Based Compensation Plan During Period Value StockRepurchasedForStockBasedCompensationPlanDuringPeriodValue	86600000
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	82400000
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	8600000
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4860800000
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	72500000
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	62700000
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	84700000
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	69500000
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Accounting Estimates</span></p><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 12pt 0pt;">The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates and the differences could be material. Our significant estimates relate to investment securities, acquisition accounting, goodwill and intangible assets, retirement benefit assets and obligations, contingent consideration, equity compensation and income taxes.</p>
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	23500000
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	24700000
CY2017	us-gaap	Depreciation And Amortization DepreciationAndAmortization	24600000
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	157200000
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	132200000
CY2017	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0
CY2018	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0
CY2019	jhg	Period Over Which Sales Commissions Can Be Deferred And Amortized Maximum PeriodOverWhichSalesCommissionsCanBeDeferredAndAmortizedMaximum	P4Y
CY2017	us-gaap	Deferred Compensation Arrangement With Individual Contributions By Employer DeferredCompensationArrangementWithIndividualContributionsByEmployer	0
CY2018	us-gaap	Deferred Compensation Arrangement With Individual Contributions By Employer DeferredCompensationArrangementWithIndividualContributionsByEmployer	0
CY2019	us-gaap	Deferred Compensation Arrangement With Individual Contributions By Employer DeferredCompensationArrangementWithIndividualContributionsByEmployer	0
CY2019	jhg	Trade And Other Receivables Payment Terms TradeAndOtherReceivablesPaymentTerms	P30D
CY2019	us-gaap	Number Of Reporting Units NumberOfReportingUnits	1
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.50
CY2019	jhg	Gain Loss Recognized On Purchase Issue Sale Or Cancellation Of Own Equity Shares GainLossRecognizedOnPurchaseIssueSaleOrCancellationOfOwnEquityShares	0
CY2017Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.125
CY2017Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.1547
CY2017Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	1131842110
CY2017Q2	us-gaap	Common Stock Value CommonStockValue	175100000
CY2017Q2	us-gaap	Common Stock Value CommonStockValue	175100000
CY2017Q2	us-gaap	Common Stock Value CommonStockValue	234400000
CY2017Q2	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1237900000
CY2017Q2	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1297200000
CY2017Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.15
CY2017Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.1547
CY2017Q2	us-gaap	Common Stock Value CommonStockValue	169800000
CY2017Q2	jhg	Adjustments To Additional Paid In Capital Change In Par Value AdjustmentsToAdditionalPaidInCapitalChangeInParValue	5300000
CY2017Q2	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1297200000
CY2017Q2	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1302500000
CY2017Q2	us-gaap	Stockholders Equity Note Stock Split Conversion Ratio1 StockholdersEquityNoteStockSplitConversionRatio1	10
CY2017Q2	us-gaap	Stockholders Equity Note Stock Split Conversion Ratio1 StockholdersEquityNoteStockSplitConversionRatio1	1
CY2017Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.50
CY2017	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	2182600000
CY2017	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	704600000
	us-gaap	Business Combination Pro Forma Information Revenue Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual	752900000
	us-gaap	Business Combination Pro Forma Information Earnings Or Loss Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual	354000000.0
CY2019Q4	us-gaap	Derivative Assets DerivativeAssets	700000
CY2019Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	1178300000
CY2018Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	574500000
CY2019Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	8700000
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-1100000
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-6800000
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-3200000
CY2019	jhg	Derivative Instruments Not Designated As Hedging Instruments Gains Losses Net Denominated In Foreign Currency DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainsLossesNetDenominatedInForeignCurrency	1100000
CY2018	jhg	Derivative Instruments Not Designated As Hedging Instruments Gains Losses Net Denominated In Foreign Currency DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainsLossesNetDenominatedInForeignCurrency	6800000
CY2017	jhg	Derivative Instruments Not Designated As Hedging Instruments Gains Losses Net Denominated In Foreign Currency DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainsLossesNetDenominatedInForeignCurrency	3200000
CY2019Q4	us-gaap	Financial Instruments Sold Not Yet Purchased Derivatives And Other Contracts FinancialInstrumentsSoldNotYetPurchasedDerivativesAndOtherContracts	26500000
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	29500000
CY2018	jhg	Accumulated Amortization Related To Foreign Currency Translation Gain Loss AccumulatedAmortizationRelatedToForeignCurrencyTranslationGainLoss	-2900000
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	116300000
CY2017Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	3204800000
CY2019	us-gaap	Gain Loss On Investments GainLossOnInvestments	34200000
CY2018	us-gaap	Gain Loss On Investments GainLossOnInvestments	-40900000
CY2017	us-gaap	Gain Loss On Investments GainLossOnInvestments	18000000.0
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	116300000
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	29300000
CY2019	jhg	Accumulated Amortization Related To Foreign Currency Translation Gain Loss AccumulatedAmortizationRelatedToForeignCurrencyTranslationGainLoss	-1600000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	147200000
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	3123300000
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	29300000
CY2019	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	18000000.0
CY2019	jhg	Intangible Assets Translation Adjustments IntangibleAssetsTranslationAdjustments	12600000
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	3088600000
CY2018Q4	us-gaap	Goodwill Goodwill	1478000000.0
CY2019	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-26300000
CY2019Q4	us-gaap	Goodwill Goodwill	1504300000
CY2018	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	7200000
CY2017Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	381200000
CY2018	us-gaap	Indefinite Lived Intangible Assets Foreign Currency Translation Gain Loss IndefiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss	400000
CY2017Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	89700000
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Intangible Assets Other Than Goodwill BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill	29500000
CY2018	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	7200000
CY2018	jhg	Intangible Assets Translation Adjustments IntangibleAssetsTranslationAdjustments	44800000
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	3123300000
CY2017Q4	us-gaap	Goodwill Goodwill	1533900000
CY2018	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	46400000
CY2018Q4	us-gaap	Disposal Group Including Discontinued Operation Goodwill1 DisposalGroupIncludingDiscontinuedOperationGoodwill1	9500000
CY2018Q4	us-gaap	Goodwill Goodwill	1478000000.0
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	29400000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	26500000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	18000000.0
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	17800000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	16400000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	109400000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	217500000
CY2019Q4	jhg	Amount Of Fair Value Greater Than Less Than Carrying Value AmountOfFairValueGreaterThanLessThanCarryingValue	300000
CY2019	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	0
CY2019	us-gaap	Lessee Operating Lease Existence Of Option To Extend LesseeOperatingLeaseExistenceOfOptionToExtend	true
CY2019	us-gaap	Lessee Finance Lease Existence Of Option To Extend LesseeFinanceLeaseExistenceOfOptionToExtend	true
CY2019	us-gaap	Lessee Finance Lease Existence Of Option To Terminate LesseeFinanceLeaseExistenceOfOptionToTerminate	true
CY2019	us-gaap	Lessee Operating Lease Existence Of Option To Terminate LesseeOperatingLeaseExistenceOfOptionToTerminate	true
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	132600000
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	24900000
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	129400000
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	154300000
CY2019Q4	jhg	Finance Lease Right Of Use Asset Cost FinanceLeaseRightOfUseAssetCost	13000000.0
CY2019Q4	jhg	Finance Lease Right Of Use Asset Accumulated Depreciation FinanceLeaseRightOfUseAssetAccumulatedDepreciation	12200000
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	800000
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	800000
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	100000
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	900000
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	33700000
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	1100000
CY2019	jhg	Finance Lease Cost FinanceLeaseCost	1100000
CY2019	us-gaap	Sublease Income SubleaseIncome	7300000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	26900000
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	55900000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	2800000
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	28900000
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	1100000
CY2019	jhg	Right Of Use Asset Obtained In Exchange For Lease Liability RightOfUseAssetObtainedInExchangeForLeaseLiability	19800000
CY2019Q4	us-gaap	Lessee Operating Lease Lease Not Yet Commenced Term Of Contract1 LesseeOperatingLeaseLeaseNotYetCommencedTermOfContract1	P11Y
CY2019	jhg	Lessee Operating Lease Lease Not Yet Commenced Amount LesseeOperatingLeaseLeaseNotYetCommencedAmount	8400000
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P80M
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P15M
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.00046
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.00028
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	31100000
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	700000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	29800000
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	100000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	25500000
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	100000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	23600000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	22400000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	48800000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	181200000
CY2019Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	900000
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	154300000
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	900000
CY2019Q4	jhg	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Debt Premium DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDebtPremium	4600000
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	3100000
CY2019	jhg	Income Loss From Equity Method Investments Prior To Consolidation IncomeLossFromEquityMethodInvestmentsPriorToConsolidation	1500000
CY2018	jhg	Income Loss From Equity Method Investments Prior To Consolidation IncomeLossFromEquityMethodInvestmentsPriorToConsolidation	2000000.0
CY2018Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	23100000
CY2017Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	46500000
CY2018	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	7600000
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	142500000
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	172700000
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	144600000
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4700000
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-10500000
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-355600000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	137800000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	162200000
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-211000000.0
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	583500000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	661800000
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	447400000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	63000000.0
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	60800000
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	59900000
CY2018Q4	jhg	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Debt Premium DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDebtPremium	5400000
CY2019Q4	jhg	Deferred Tax Asset Lease Liabilities DeferredTaxAssetLeaseLiabilities	27100000
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	16900000
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	11800000
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	174300000
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	137000000.0
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	56100000
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	55600000
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	118200000
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	81400000
CY2019Q4	jhg	Deferred Tax Liabilities Retirement Benefits DeferredTaxLiabilitiesRetirementBenefits	24900000
CY2018Q4	jhg	Deferred Tax Liabilities Retirement Benefits DeferredTaxLiabilitiesRetirementBenefits	23900000
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	790000000.0
CY2018Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	783900000
CY2019Q4	jhg	Deferred Tax Liabilities Lease Right Of Use Assets DeferredTaxLiabilitiesLeaseRightOfUseAssets	25800000
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	4800000
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	3500000
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	845500000
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	811300000
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	727300000
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	729900000
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	729100000
CY2018Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	729900000
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	727300000
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	729900000
CY2019	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	500000
CY2018Q4	jhg	Unrecognized Tax Benefits Including Interest UnrecognizedTaxBenefitsIncludingInterest	12400000
CY2017Q4	jhg	Unrecognized Tax Benefits Including Interest UnrecognizedTaxBenefitsIncludingInterest	10200000
CY2016Q4	jhg	Unrecognized Tax Benefits Including Interest UnrecognizedTaxBenefitsIncludingInterest	2500000
CY2017	jhg	Unrecognized Tax Benefits Increase Resulting From Acquired From Merger UnrecognizedTaxBenefitsIncreaseResultingFromAcquiredFromMerger	5000000.0
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2200000
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	3400000
CY2018	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	3600000
CY2019	jhg	Unrecognized Tax Benefits Increase Decrease Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreaseDecreaseResultingFromPriorPeriodTaxPositions	3500000
CY2018	jhg	Unrecognized Tax Benefits Increase Decrease Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreaseDecreaseResultingFromPriorPeriodTaxPositions	1400000
CY2017	jhg	Unrecognized Tax Benefits Increase Decrease Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreaseDecreaseResultingFromPriorPeriodTaxPositions	800000
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	500000
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	900000
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1900000
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	700000
CY2017	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	900000
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsIncreasesResultingFromForeignCurrencyTranslation	100000
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsDecreasesResultingFromForeignCurrencyTranslation	200000
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsIncreasesResultingFromForeignCurrencyTranslation	300000
CY2019Q4	jhg	Unrecognized Tax Benefits Including Interest UnrecognizedTaxBenefitsIncludingInterest	14100000
CY2018Q4	jhg	Unrecognized Tax Benefits Including Interest UnrecognizedTaxBenefitsIncludingInterest	12400000
CY2017Q4	jhg	Unrecognized Tax Benefits Including Interest UnrecognizedTaxBenefitsIncludingInterest	10200000
CY2019Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	1700000
CY2018Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	1500000
CY2017Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	1500000
CY2019Q4	us-gaap	Decrease In Unrecognized Tax Benefits Is Reasonably Possible DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible	200000
CY2019Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	27400000
CY2018Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	22600000
CY2019Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	9500000
CY2018Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	4300000
CY2019Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	26000000.0
CY2018Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	3200000
CY2019Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	53100000
CY2018Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	39300000
CY2019Q4	us-gaap	Other Assets Current OtherAssetsCurrent	116000000.0
CY2018Q4	us-gaap	Other Assets Current OtherAssetsCurrent	69400000
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	149300000
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	15500000
CY2019Q4	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	50800000
CY2018Q4	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	42200000
CY2019Q4	jhg	Accrued Rebates Current AccruedRebatesCurrent	28500000
CY2018Q4	jhg	Accrued Rebates Current AccruedRebatesCurrent	30200000
CY2019Q4	jhg	Other Miscellaneous Accrued Liabilities Current OtherMiscellaneousAccruedLiabilitiesCurrent	52500000
CY2018Q4	jhg	Other Miscellaneous Accrued Liabilities Current OtherMiscellaneousAccruedLiabilitiesCurrent	84700000
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	131800000
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	157100000
CY2019Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	12600000
CY2018Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	28000000.0
CY2019Q4	jhg	Lease Liability Current LeaseLiabilityCurrent	25700000
CY2018Q4	jhg	Lease Liability Current LeaseLiabilityCurrent	1100000
CY2019Q4	us-gaap	Business Combination Contingent Consideration Liability Current BusinessCombinationContingentConsiderationLiabilityCurrent	14300000
CY2018Q4	us-gaap	Business Combination Contingent Consideration Liability Current BusinessCombinationContingentConsiderationLiabilityCurrent	13800000
CY2019Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	35300000
CY2018Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	1100000
CY2019Q4	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	26300000
CY2018Q4	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	32100000
CY2019Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	246000000.0
CY2018Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	233200000
CY2019Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	14900000
CY2018Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	10600000
CY2019Q4	jhg	Lease Liability Noncurrent LeaseLiabilityNoncurrent	129500000
CY2019Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	7500000
CY2018Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	10300000
CY2019Q4	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	6900000
CY2018Q4	us-gaap	Business Combination Contingent Consideration Liability Noncurrent BusinessCombinationContingentConsiderationLiabilityNoncurrent	47500000
CY2018Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	10800000
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	158800000
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	79200000
CY2019	jhg	Lessee Operating Lease Number LesseeOperatingLeaseNumber	2
CY2019Q4	us-gaap	Redeemable Noncontrolling Interest Equity Fair Value RedeemableNoncontrollingInterestEquityFairValue	677900000
CY2018Q4	us-gaap	Redeemable Noncontrolling Interest Equity Fair Value RedeemableNoncontrollingInterestEquityFairValue	136100000
CY2018	jhg	Defined Benefit Plan Contribution To Money Purchase Section DefinedBenefitPlanContributionToMoneyPurchaseSection	-8000000.0
CY2017	jhg	Defined Benefit Plan Contribution To Money Purchase Section DefinedBenefitPlanContributionToMoneyPurchaseSection	-7400000
CY2019Q4	us-gaap	Minority Interest MinorityInterest	19700000
CY2018Q4	us-gaap	Minority Interest MinorityInterest	21500000
CY2019	jhg	Share Based Compensation Arrangement By Share Based Payment Award Performance Hurdle Related To Group Tsr Percentage ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceHurdleRelatedToGroupTsrPercentage	0.95
CY2019	jhg	Share Based Compensation Arrangement By Share Based Payment Award Performance Hurdle Related To Risk And Sustainability Metrics ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceHurdleRelatedToRiskAndSustainabilityMetrics	0.05
CY2019	jhg	Share Based Compensation Net ShareBasedCompensationNet	73700000
CY2018	jhg	Share Based Compensation Net ShareBasedCompensationNet	81600000
CY2017	jhg	Share Based Compensation Net ShareBasedCompensationNet	66800000
CY2019	jhg	Liability Settled Of Share Based Award Plan LiabilitySettledOfShareBasedAwardPlan	57500000
CY2018	jhg	Liability Settled Of Share Based Award Plan LiabilitySettledOfShareBasedAwardPlan	54900000
CY2017	jhg	Liability Settled Of Share Based Award Plan LiabilitySettledOfShareBasedAwardPlan	41400000
CY2019	jhg	Mutual Fund Share Awards Liability Settled Of Share Based Award Plan MutualFundShareAwardsLiabilitySettledOfShareBasedAwardPlan	46200000
CY2018	jhg	Mutual Fund Share Awards Liability Settled Of Share Based Award Plan MutualFundShareAwardsLiabilitySettledOfShareBasedAwardPlan	24300000
CY2017	jhg	Mutual Fund Share Awards Liability Settled Of Share Based Award Plan MutualFundShareAwardsLiabilitySettledOfShareBasedAwardPlan	20700000
CY2019	jhg	Profits Interests And Other Share Based Award Plan ProfitsInterestsAndOtherShareBasedAwardPlan	-3900000
CY2018	jhg	Profits Interests And Other Share Based Award Plan ProfitsInterestsAndOtherShareBasedAwardPlan	18400000
CY2017	jhg	Profits Interests And Other Share Based Award Plan ProfitsInterestsAndOtherShareBasedAwardPlan	12300000
CY2019	jhg	Social Security Costs Share Based Award Plan SocialSecurityCostsShareBasedAwardPlan	10800000
CY2018	jhg	Social Security Costs Share Based Award Plan SocialSecurityCostsShareBasedAwardPlan	9400000
CY2017	jhg	Social Security Costs Share Based Award Plan SocialSecurityCostsShareBasedAwardPlan	10300000
CY2019	jhg	Stock Based Payment Expense Charged To Comprehensive Income StockBasedPaymentExpenseChargedToComprehensiveIncome	184300000
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CY2019	jhg	Mutual Fund Share Awards Liability Settled Of Unrecognized Compensation Share Based Award Plan Weighted Average Years MutualFundShareAwardsLiabilitySettledOfUnrecognizedCompensationShareBasedAwardPlanWeightedAverageYears	P2Y1M6D
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CY2019	jhg	Profits Interests And Other Weighted Average Years ProfitsInterestsAndOtherWeightedAverageYears	P4Y6M
CY2019	jhg	Social Security Costs Share Based Award Plan Unrecognized Compensation SocialSecurityCostsShareBasedAwardPlanUnrecognizedCompensation	19100000
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CY2019	jhg	Unrecognized Compensation Costs Charged To Comprehensive Income Remaining UnrecognizedCompensationCostsChargedToComprehensiveIncomeRemaining	152000000.0
CY2019	jhg	Unrecognized Compensation Weighted Average Years Charge To Comprehensive Income Remaining UnrecognizedCompensationWeightedAverageYearsChargeToComprehensiveIncomeRemaining	P1Y9M18D
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CY2017	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	19200000
CY2019	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	400000
CY2019	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	18600000
CY2018	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	21300000
CY2017	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	20300000
CY2019	jhg	Defined Benefit Plan Periodic Benefit Cost Credit Before Contribution To Money Purchase Section DefinedBenefitPlanPeriodicBenefitCostCreditBeforeContributionToMoneyPurchaseSection	-2100000
CY2018	jhg	Defined Benefit Plan Periodic Benefit Cost Credit Before Contribution To Money Purchase Section DefinedBenefitPlanPeriodicBenefitCostCreditBeforeContributionToMoneyPurchaseSection	-4400000
CY2017	jhg	Defined Benefit Plan Periodic Benefit Cost Credit Before Contribution To Money Purchase Section DefinedBenefitPlanPeriodicBenefitCostCreditBeforeContributionToMoneyPurchaseSection	-1500000
CY2019	jhg	Defined Benefit Plan Contribution To Money Purchase Section DefinedBenefitPlanContributionToMoneyPurchaseSection	-7900000
CY2019	jhg	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Number Of Years In Time DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationNumberOfYearsInTime	P15Y
CY2018	jhg	Prior Service Cost United Kingdom Ruling PriorServiceCostUnitedKingdomRuling	3700000
CY2019	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	400000
CY2019Q4	us-gaap	Defined Benefit Plan Expected Amortization Of Prior Service Cost Credit Next Fiscal Year DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear	400000
CY2019Q4	us-gaap	Profit Loss ProfitLoss	120400000
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CY2019	us-gaap	Undistributed Earnings UndistributedEarnings	427600000
CY2018	us-gaap	Undistributed Earnings UndistributedEarnings	523800000
CY2017	us-gaap	Undistributed Earnings UndistributedEarnings	655500000
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	11700000
CY2018	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	12700000
CY2017	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	17300000
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	415900000
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	511100000
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	638200000
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	188000000.0
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	195000000.0
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	160700000
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	600000
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	900000
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1600000
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CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	162300000
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.21
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.62
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.97
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.21
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.61
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.93
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CY2019Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	536000000.0
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CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2192400000
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	124500000
CY2017	jhg	Common Stock Dividends Per Share Cash Paid Pre Merger CommonStockDividendsPerShareCashPaidPreMerger	0.0915
CY2019	jhg	Common Stock Dividends Per Share Cash Paid Post Merger CommonStockDividendsPerShareCashPaidPostMerger	1.4400
CY2018	jhg	Common Stock Dividends Per Share Cash Paid Post Merger CommonStockDividendsPerShareCashPaidPostMerger	1.4000
CY2017	jhg	Common Stock Dividends Per Share Cash Paid Post Merger CommonStockDividendsPerShareCashPaidPostMerger	0.6400
CY2019	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	1870100000
CY2018	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	1953200000
CY2017	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	1473500000
CY2019Q4	us-gaap	Due From Related Parties Current DueFromRelatedPartiesCurrent	198200000
CY2018Q4	us-gaap	Due From Related Parties Current DueFromRelatedPartiesCurrent	187200000
CY2019Q4	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	34000000.0
CY2018Q4	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	29700000
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2192400000
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2306400000
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1818300000
CY2019Q4	us-gaap	Noncurrent Assets NoncurrentAssets	3173300000
CY2019Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	154300000
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	540900000
CY2019Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	5800000
CY2019Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	2900000
CY2019Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1000000.0
CY2019Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	8400000
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	18100000
CY2019Q1	us-gaap	Undistributed Earnings UndistributedEarnings	94100000
CY2019Q2	us-gaap	Undistributed Earnings UndistributedEarnings	109400000
CY2019Q3	us-gaap	Undistributed Earnings UndistributedEarnings	112100000
CY2019Q4	us-gaap	Undistributed Earnings UndistributedEarnings	112000000.0
CY2019	us-gaap	Undistributed Earnings UndistributedEarnings	427600000
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.48
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.56
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.58
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.59
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.21
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.48
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.56
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.58
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.59
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.21
CY2018Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	587700000
CY2018Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	592400000
CY2018Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	581200000
CY2018Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	545100000
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2306400000
CY2018Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	176200000
CY2018Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	175300000
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	148300000
CY2018Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	150000000.0
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	649800000
CY2018Q1	us-gaap	Profit Loss ProfitLoss	163200000
CY2018Q2	us-gaap	Profit Loss ProfitLoss	130500000
CY2018Q3	us-gaap	Profit Loss ProfitLoss	105100000
CY2018Q4	us-gaap	Profit Loss ProfitLoss	100800000
CY2018	us-gaap	Profit Loss ProfitLoss	499600000
CY2018Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-2000000.0
CY2018Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-10100000
CY2018Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-6100000
CY2018Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-6000000.0
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-24200000
CY2018Q1	us-gaap	Undistributed Earnings UndistributedEarnings	165200000
CY2018Q2	us-gaap	Undistributed Earnings UndistributedEarnings	140600000
CY2018Q3	us-gaap	Undistributed Earnings UndistributedEarnings	111200000
CY2018Q4	us-gaap	Undistributed Earnings UndistributedEarnings	106800000
CY2018	us-gaap	Undistributed Earnings UndistributedEarnings	523800000
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.82
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.70
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.55
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.54
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.62
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.82
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.70
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.55
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.54
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.61

Files In Submission

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$JHG
Janus Henderson Group PLC Stock $jhg

2018 Q4 Form 10-K Financial Statement

#000155837020001487 Filed on February 26, 2020

Income Statement

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Facts In Submission

Files In Submission

$JHG Janus Henderson Group PLC Stock $jhg

2018 Q4 Form 10-K Financial Statement

#000155837020001487 Filed on February 26, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$JHG
Janus Henderson Group PLC Stock $jhg