$JHG
Janus Henderson Group PLC Stock $jhg

$jhg Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000155837022002009 Filed on February 25, 2022

Income Statement

Concept	2021 Q4	2021	2020 Q4
Revenue	$697.2M	$2.767B	$657.2M
YoY Change	6.09%	20.38%	9.31%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin	$409.2M	$855.1M	$373.9M
YoY Change	9.44%	15.68%	-2.96%
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$10.20M	$40.70M	$11.60M
YoY Change	-12.07%	-17.28%	-32.16%
% of Gross Profit
Operating Expenses	$462.1M	$855.1M	$430.2M
YoY Change	7.42%	15.68%	-6.01%
Operating Profit		$823.4M	$227.0M
YoY Change		421.8%	47.12%
Interest Expense	-$13.40M	$12.80M	$29.00M
YoY Change	-146.21%	-0.78%	229.55%
% of Operating Profit		1.55%	12.78%
Other Income/Expense, Net	$10.90M	$8.800M	-$200.0K
YoY Change	-5550.0%	-77.83%	-96.55%
Pretax Income	$155.1M	$820.2M	$255.8M
YoY Change	-39.37%	238.79%	62.62%
Income Tax	$29.60M	$205.7M	$57.40M
% Of Pretax Income	19.08%	25.08%	22.44%
Net Earnings	$132.5M	$614.5M	$198.4M
YoY Change	-33.22%	236.53%	64.78%
Net Earnings / Revenue	19.0%	22.21%	30.19%
Basic Earnings Per Share		$3.60	$1.03
Diluted Earnings Per Share	$799.2K	$3.59	$1.02
COMMON SHARES
Basic Shares Outstanding	170.6M	167.9M	181.4M
Diluted Shares Outstanding		168.5M

Balance Sheet

Concept	2021 Q4	2021	2020 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.821B	$1.821B	$1.591B
YoY Change	14.46%	14.45%	-19.45%
Cash & Equivalents	$1.119B	$1.119B	$1.108B
Short-Term Investments	$702.3M	$702.3M	$482.7M
Other Short-Term Assets	$150.2M	$152.3M	$111.1M
YoY Change	35.19%	32.43%	-4.22%
Inventory
Prepaid Expenses	$38.10M		$35.10M
Receivables	$84.40M	$84.40M	$114.7M
Other Receivables	$351.6M	$351.6M	$373.6M
Total Short-Term Assets	$2.409B	$2.409B	$2.194B
YoY Change	9.82%	9.81%	-15.0%
LONG-TERM ASSETS
Property, Plant & Equipment	$63.30M	$178.8M	$77.90M
YoY Change	-18.74%	-10.6%	-8.03%
Goodwill	$1.374B		$1.384B
YoY Change	-0.69%		-8.0%
Intangibles	$2.543B		$2.686B
YoY Change	-5.35%		-13.03%
Long-Term Investments
YoY Change
Other Assets	$172.9M	$222.5M	$157.7M
YoY Change	9.64%	-1.98%	5.63%
Total Long-Term Assets	$4.318B	$4.318B	$4.497B
YoY Change	-3.98%	-3.97%	-10.79%
TOTAL ASSETS
Total Short-Term Assets	$2.409B	$2.409B	$2.194B
Total Long-Term Assets	$4.318B	$4.318B	$4.497B
Total Assets	$6.728B	$6.728B	$6.691B
YoY Change	0.55%	0.55%	-12.21%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$273.4M	$273.4M	$235.3M
YoY Change	16.19%	619.47%	-15.18%
Accrued Expenses	$420.0M	$466.0M	$371.0M
YoY Change	13.21%	-11.91%	2.88%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due		$700.0K
YoY Change		-30.0%
Total Short-Term Liabilities	$786.4M	$786.4M	$727.8M
YoY Change	8.05%	8.02%	-5.44%
LONG-TERM LIABILITIES
Long-Term Debt	$310.4M	$311.8M	$313.3M
YoY Change	-0.93%	-1.02%	-0.92%
Other Long-Term Liabilities	$134.4M	$183.5M	$144.3M
YoY Change	-6.86%	-8.71%	-9.13%
Total Long-Term Liabilities	$444.8M	$495.3M	$457.6M
YoY Change	-2.8%	-4.01%	-3.66%
TOTAL LIABILITIES
Total Short-Term Liabilities	$786.4M	$786.4M	$727.8M
Total Long-Term Liabilities	$444.8M	$495.3M	$457.6M
Total Liabilities	$1.901B	$2.080B	$1.871B
YoY Change	1.59%	5.35%	-8.17%
SHAREHOLDERS EQUITY
Retained Earnings	$1.074B		$1.062B
YoY Change	1.08%		-17.29%
Common Stock	$253.6M		$270.6M
YoY Change	-6.28%		-3.53%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$55.10M		$107.3M
YoY Change	-48.65%		-23.08%
Treasury Stock Shares	$1.134M		$2.548M
Shareholders Equity	$4.648B	$4.648B	$4.716B
YoY Change
Total Liabilities & Shareholders Equity	$6.728B	$6.728B	$6.691B
YoY Change	0.55%	0.55%	-12.21%

Cashflow Statement

Concept	2021 Q4	2021	2020 Q4
OPERATING ACTIVITIES
Net Income	$132.5M	$614.5M	$198.4M
YoY Change	-33.22%	236.53%	64.78%
Depreciation, Depletion And Amortization	$10.20M	$40.70M	$11.60M
YoY Change	-12.07%	-17.28%	-32.16%
Cash From Operating Activities	$281.2M	$895.4M	$220.2M
YoY Change	27.7%	38.67%	6.38%
INVESTING ACTIVITIES
Capital Expenditures	-$4.500M	$10.40M	-$1.300M
YoY Change	246.15%	-41.57%	-91.1%
Acquisitions
YoY Change
Other Investing Activities	-$13.00M	-$272.9M	$120.7M
YoY Change	-110.77%	-285.39%	-134.48%
Cash From Investing Activities	-$17.50M	-$283.3M	$119.4M
YoY Change	-114.66%	-318.93%	-132.74%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-90.70M	-588.1M	-191.2M
YoY Change	-52.56%	19.78%	-208.64%
NET CHANGE
Cash From Operating Activities	281.2M	895.4M	220.2M
Cash From Investing Activities	-17.50M	-283.3M	119.4M
Cash From Financing Activities	-90.70M	-588.1M	-191.2M
Net Change In Cash	173.0M	10.50M	148.4M
YoY Change	16.58%	-96.63%	710.93%
FREE CASH FLOW
Cash From Operating Activities	$281.2M	$895.4M	$220.2M
Capital Expenditures	-$4.500M	$10.40M	-$1.300M
Free Cash Flow	$285.7M	$885.0M	$221.5M
YoY Change	28.98%	40.95%	-0.05%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
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CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
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CY2021	jhg	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Number Of Years In Time DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationNumberOfYearsInTime	P15Y
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0001274173
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherAssetsNoncurrent
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CY2021	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	98-1376360
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	201 Bishopsgate
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	London
CY2021	dei	Entity Address Country EntityAddressCountry	GB
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	EC2M3AE
CY2021	dei	Country Region CountryRegion	+44
CY2021	dei	City Area Code CityAreaCode	(0) 20
CY2021	dei	Local Phone Number LocalPhoneNumber	7818 1818
CY2021	dei	Security12b Title Security12bTitle	Common Stock, $1.50 Per Share Par Value
CY2021	dei	Trading Symbol TradingSymbol	JHG
CY2022Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	169046154
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CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	001-38103
CY2021	dei	Entity Registrant Name EntityRegistrantName	JANUS HENDERSON GROUP PLC
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	Y9
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CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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CY2021	dei	Auditor Location AuditorLocation	Denver, Colorado
CY2021	dei	Auditor Name AuditorName	PricewaterhouseCoopers LLP
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CY2019	us-gaap	Undistributed Earnings UndistributedEarnings	427600000
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.60
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.87
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.21
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.59
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.87
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.21
CY2021	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-50100000
CY2020	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	71800000
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	74700000
CY2021	jhg	Other Comprehensive Income Actuarial Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeActuarialGainLossArisingDuringPeriodNetOfTax	-22400000
CY2020	jhg	Other Comprehensive Income Actuarial Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeActuarialGainLossArisingDuringPeriodNetOfTax	-29500000
CY2019	jhg	Other Comprehensive Income Actuarial Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeActuarialGainLossArisingDuringPeriodNetOfTax	-5600000
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-72500000
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	42300000
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	69100000
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	-400000
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	-800000
CY2021	jhg	Pension Contributions In Excess Of Pension Costs Recognized PensionContributionsInExcessOfPensionCostsRecognized	-1200000
CY2020	jhg	Pension Contributions In Excess Of Pension Costs Recognized PensionContributionsInExcessOfPensionCostsRecognized	4600000
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	12700000
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-72100000
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	43100000
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	56400000
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	542000000.0
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	224900000
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	514800000
CY2021	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-8000000.0
CY2020	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	20200000
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	30800000
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	550000000.0
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	204700000
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	484000000.0
CY2021	us-gaap	Profit Loss ProfitLoss	614500000
CY2020	us-gaap	Profit Loss ProfitLoss	182600000
CY2019	us-gaap	Profit Loss ProfitLoss	445700000
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	40700000
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	49200000
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	62600000
CY2021	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	121900000
CY2020	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	513700000
CY2019	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	18000000.0
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-2200000
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-104800000
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4700000
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	68200000
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	66700000
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	74200000
CY2020	jhg	Right Of Use Operating Lease Impairment Loss RightOfUseOperatingLeaseImpairmentLoss	1300000
CY2019	jhg	Right Of Use Operating Lease Impairment Loss RightOfUseOperatingLeaseImpairmentLoss	4700000
CY2020	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	16200000
CY2021	jhg	Gain Loss On Investments Net GainLossOnInvestmentsNet	800000
CY2020	jhg	Gain Loss On Investments Net GainLossOnInvestmentsNet	57500000
CY2019	jhg	Gain Loss On Investments Net GainLossOnInvestmentsNet	34200000
CY2019	jhg	Pension Contributions In Excess Of Pension Costs Recognized PensionContributionsInExcessOfPensionCostsRecognized	-1000000.0
CY2020	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-7100000
CY2019	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-20000000.0
CY2021	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	8400000
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	20500000
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	11100000
CY2021	jhg	Increase Decrease In Oeic And Unit Trust Receivables And Payables IncreaseDecreaseInOEICAndUnitTrustReceivablesAndPayables	-1000000.0
CY2020	jhg	Increase Decrease In Oeic And Unit Trust Receivables And Payables IncreaseDecreaseInOEICAndUnitTrustReceivablesAndPayables	-7600000
CY2019	jhg	Increase Decrease In Oeic And Unit Trust Receivables And Payables IncreaseDecreaseInOEICAndUnitTrustReceivablesAndPayables	-400000
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	44100000
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	53400000
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	16400000
CY2021	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	103400000
CY2020	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	88700000
CY2019	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-57000000.0
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	895400000
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	645700000
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	463200000
CY2021	jhg	Purchases Settlements And Maturities Of Marketable Securities And Derivatives PurchasesSettlementsAndMaturitiesOfMarketableSecuritiesAndDerivatives	177100000
CY2020	jhg	Purchases Settlements And Maturities Of Marketable Securities And Derivatives PurchasesSettlementsAndMaturitiesOfMarketableSecuritiesAndDerivatives	-134800000
CY2019	jhg	Purchases Settlements And Maturities Of Marketable Securities And Derivatives PurchasesSettlementsAndMaturitiesOfMarketableSecuritiesAndDerivatives	-1500000
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	10400000
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	17800000
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	37800000
CY2021	jhg	Proceeds From Payments For Investment Securities By Consolidated Seeded Investment Products Net ProceedsFromPaymentsForInvestmentSecuritiesByConsolidatedSeededInvestmentProductsNet	-97400000
CY2020	jhg	Proceeds From Payments For Investment Securities By Consolidated Seeded Investment Products Net ProceedsFromPaymentsForInvestmentSecuritiesByConsolidatedSeededInvestmentProductsNet	-20200000
CY2019	jhg	Proceeds From Payments For Investment Securities By Consolidated Seeded Investment Products Net ProceedsFromPaymentsForInvestmentSecuritiesByConsolidatedSeededInvestmentProductsNet	-320800000
CY2021	us-gaap	Payments For Proceeds From Hedge Investing Activities PaymentsForProceedsFromHedgeInvestingActivities	27000000.0
CY2020	us-gaap	Payments For Proceeds From Hedge Investing Activities PaymentsForProceedsFromHedgeInvestingActivities	11600000
CY2019	us-gaap	Payments For Proceeds From Hedge Investing Activities PaymentsForProceedsFromHedgeInvestingActivities	34900000
CY2021	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	1200000
CY2020	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	400000
CY2019	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	400000
CY2021	jhg	Proceeds From Sale Of Volantis Contingent Consideration ProceedsFromSaleOfVolantisContingentConsideration	2000000.0
CY2020	jhg	Proceeds From Sale Of Volantis Contingent Consideration ProceedsFromSaleOfVolantisContingentConsideration	2200000
CY2019	jhg	Proceeds From Sale Of Volantis Contingent Consideration ProceedsFromSaleOfVolantisContingentConsideration	2300000
CY2021	jhg	Proceeds From Sale Of Geneva Contingent Consideration ProceedsFromSaleOfGenevaContingentConsideration	25400000
CY2020	jhg	Proceeds From Sale Of Geneva Contingent Consideration ProceedsFromSaleOfGenevaContingentConsideration	3200000
CY2020	jhg	Proceeds From Geneva ProceedsFromGeneva	38400000
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-283300000
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	129400000
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-389300000
CY2021	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	12500000
CY2020	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	1000000.0
CY2021	jhg	Payments For Repurchase Of Common Stock For Stock Based Compensation Plans PaymentsForRepurchaseOfCommonStockForStockBasedCompensationPlans	71800000
CY2020	jhg	Payments For Repurchase Of Common Stock For Stock Based Compensation Plans PaymentsForRepurchaseOfCommonStockForStockBasedCompensationPlans	49100000
CY2019	jhg	Payments For Repurchase Of Common Stock For Stock Based Compensation Plans PaymentsForRepurchaseOfCommonStockForStockBasedCompensationPlans	39000000.0
CY2021	jhg	Payments For Repurchase Of Common Stock From Dai Ichi And For Share Buyback Program PaymentsForRepurchaseOfCommonStockFromDaiIchiAndForShareBuybackProgram	372100000
CY2020	jhg	Payments For Repurchase Of Common Stock From Dai Ichi And For Share Buyback Program PaymentsForRepurchaseOfCommonStockFromDaiIchiAndForShareBuybackProgram	130800000
CY2019	jhg	Payments For Repurchase Of Common Stock From Dai Ichi And For Share Buyback Program PaymentsForRepurchaseOfCommonStockFromDaiIchiAndForShareBuybackProgram	199900000
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	256000000.0
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	262900000
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	272400000
CY2020	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	13800000
CY2019	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	14100000
CY2021	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	500000
CY2020	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	800000
CY2019	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	1300000
CY2021	jhg	Payments For Proceeds From Third Party Investments In Seeded Investment Products Net Of Redemptions PaymentsForProceedsFromThirdPartyInvestmentsInSeededInvestmentProductsNetOfRedemptions	-100300000
CY2020	jhg	Payments For Proceeds From Third Party Investments In Seeded Investment Products Net Of Redemptions PaymentsForProceedsFromThirdPartyInvestmentsInSeededInvestmentProductsNetOfRedemptions	34000000.0
CY2019	jhg	Payments For Proceeds From Third Party Investments In Seeded Investment Products Net Of Redemptions PaymentsForProceedsFromThirdPartyInvestmentsInSeededInvestmentProductsNetOfRedemptions	-320800000
CY2021	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	500000
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	600000
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	1100000
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-588100000
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-491000000.0
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-207000000.0
CY2021	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	-13500000
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	27500000
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
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	10500000
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	311600000
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-120100000
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1108100000
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
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1118600000
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1108100000
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	796500000
CY2021	us-gaap	Interest Paid Net InterestPaidNet	14600000
CY2020	us-gaap	Interest Paid Net InterestPaidNet	14600000
CY2019	us-gaap	Interest Paid Net InterestPaidNet	14600000
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	217600000
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	159000000.0
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	160000000.0
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1118600000
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1108100000
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	796500000
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4860800000
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	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	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
CY2020	jhg	Net Income Loss Excluding Redeemable Noncontrolling Interests NetIncomeLossExcludingRedeemableNoncontrollingInterests	160100000
CY2020	jhg	Other Comprehensive Income Loss Excluding Redeemable Noncontrolling Interest Net Of Tax OtherComprehensiveIncomeLossExcludingRedeemableNoncontrollingInterestNetOfTax	43100000
CY2020	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.44
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	262900000
CY2020	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	130800000
CY2020	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	800000
CY2020	jhg	Fair Value Adjustments To Redeemable Noncontrolling Interests FairValueAdjustmentsToRedeemableNoncontrollingInterests	300000
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	49100000
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	66700000
CY2020	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	1000000.0
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4733800000
CY2021	jhg	Net Income Loss Excluding Redeemable Noncontrolling Interests NetIncomeLossExcludingRedeemableNoncontrollingInterests	620600000
CY2021	jhg	Other Comprehensive Income Loss Excluding Redeemable Noncontrolling Interest Net Of Tax OtherComprehensiveIncomeLossExcludingRedeemableNoncontrollingInterestNetOfTax	-72100000
CY2021	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.50
CY2021	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	256000000.0
CY2021	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	372100000
CY2021	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	500000
CY2021	jhg	Fair Value Adjustments To Redeemable Noncontrolling Interests FairValueAdjustmentsToRedeemableNoncontrollingInterests	600000
CY2021	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	71800000
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	68200000
CY2021	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	12500000
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4663200000
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<p style="font-family:'Times New Roman','Times','serif';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','Times','serif';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>
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	23500000
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	26000000.0
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	23500000
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	157500000
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	149700000
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	94200000
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	71800000
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	63300000
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	77900000
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0
CY2020	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0
CY2021	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0
CY2021	jhg	Period Over Which Sales Commissions Can Be Deferred And Amortized Maximum PeriodOverWhichSalesCommissionsCanBeDeferredAndAmortizedMaximum	P4Y
CY2019	us-gaap	Deferred Compensation Arrangement With Individual Contributions By Employer DeferredCompensationArrangementWithIndividualContributionsByEmployer	0
CY2020	us-gaap	Deferred Compensation Arrangement With Individual Contributions By Employer DeferredCompensationArrangementWithIndividualContributionsByEmployer	0
CY2021	us-gaap	Deferred Compensation Arrangement With Individual Contributions By Employer DeferredCompensationArrangementWithIndividualContributionsByEmployer	0
CY2021	jhg	Trade And Other Receivables Payment Terms TradeAndOtherReceivablesPaymentTerms	P30D
CY2021	us-gaap	Number Of Reporting Units NumberOfReportingUnits	1
CY2021Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.50
CY2021	jhg	Gain Loss Recognized On Purchase Issue Sale Or Cancellation Of Own Equity Shares GainLossRecognizedOnPurchaseIssueSaleOrCancellationOfOwnEquityShares	0
CY2020Q4	us-gaap	Financial Instruments Sold Not Yet Purchased Derivatives And Other Contracts FinancialInstrumentsSoldNotYetPurchasedDerivativesAndOtherContracts	7900000
CY2021Q4	us-gaap	Derivative Assets DerivativeAssets	3200000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	100700000
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	7700000
CY2021	jhg	Accumulated Amortization Related To Foreign Currency Translation Gain Loss AccumulatedAmortizationRelatedToForeignCurrencyTranslationGainLoss	1200000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	107200000
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	2686300000
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	7700000
CY2021	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	121900000
CY2021	jhg	Intangible Assets Translation Adjustments IntangibleAssetsTranslationAdjustments	-14000000.0
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	2542700000
CY2020Q4	us-gaap	Goodwill Goodwill	1383900000
CY2021Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	702300000
CY2020Q4	us-gaap	Investment Owned At Fair Value InvestmentOwnedAtFairValue	482700000
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	800000
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	57500000
CY2019	us-gaap	Gain Loss On Investments GainLossOnInvestments	34200000
CY2021Q4	us-gaap	Financial Instruments Sold Not Yet Purchased Derivatives And Other Contracts FinancialInstrumentsSoldNotYetPurchasedDerivativesAndOtherContracts	3100000
CY2021	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	9600000
CY2021Q4	us-gaap	Goodwill Goodwill	1374300000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	147200000
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	12400000
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset Accumulated Amortization FinanceLeaseRightOfUseAssetAccumulatedAmortization	13400000
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Accumulated Amortization FinanceLeaseRightOfUseAssetAccumulatedAmortization	12900000
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	2000000.0
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	2000000.0
CY2021Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	700000
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	500000
CY2021Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	1400000
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	1600000
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	2100000
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	2100000
CY2020	jhg	Accumulated Amortization Related To Disposals AccumulatedAmortizationRelatedToDisposals	61400000
CY2020	jhg	Accumulated Amortization Related To Foreign Currency Translation Gain Loss AccumulatedAmortizationRelatedToForeignCurrencyTranslationGainLoss	2500000
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	100700000
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	3088600000
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	12400000
CY2020Q4	jhg	Disposal Group Including Discontinued Operation Intangible Assets Net Of Amortization DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsNetOfAmortization	17900000
CY2020	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	390200000
CY2020	jhg	Intangible Assets Translation Adjustments IntangibleAssetsTranslationAdjustments	18200000
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	2686300000
CY2019Q4	us-gaap	Goodwill Goodwill	1504300000
CY2020Q4	us-gaap	Disposal Group Including Discontinued Operation Goodwill1 DisposalGroupIncludingDiscontinuedOperationGoodwill1	23500000
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	123500000
CY2020	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-26600000
CY2020Q4	us-gaap	Goodwill Goodwill	1383900000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	7600000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	7300000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	5900000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	5900000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	5900000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	28600000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	61200000
CY2021	us-gaap	Lessee Operating Lease Existence Of Option To Extend LesseeOperatingLeaseExistenceOfOptionToExtend	true
CY2021	us-gaap	Lessee Finance Lease Existence Of Option To Extend LesseeFinanceLeaseExistenceOfOptionToExtend	true
CY2021	us-gaap	Lessee Finance Lease Existence Of Option To Terminate LesseeFinanceLeaseExistenceOfOptionToTerminate	true
CY2021	us-gaap	Lessee Operating Lease Existence Of Option To Terminate LesseeOperatingLeaseExistenceOfOptionToTerminate	true
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	115500000
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	121800000
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	28400000
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	26800000
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	104600000
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	117800000
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	133000000.0
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	144600000
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	15400000
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	14900000
CY2021	jhg	Right Of Use Asset Obtained In Exchange For Lease Liability RightOfUseAssetObtainedInExchangeForLeaseLiability	11400000
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	30200000
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	31200000
CY2021	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	500000
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	900000
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	100000
CY2021	jhg	Finance Lease Cost FinanceLeaseCost	500000
CY2020	jhg	Finance Lease Cost FinanceLeaseCost	1000000.0
CY2021	us-gaap	Sublease Income SubleaseIncome	7200000
CY2020	us-gaap	Sublease Income SubleaseIncome	3000000.0
CY2020	jhg	Lessee Operating Sublease Impairment Of Right Of Use Asset LesseeOperatingSubleaseImpairmentOfRightOfUseAsset	1400000
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	27900000
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	32400000
CY2021	jhg	Finance Lease Payments FinanceLeasePayments	400000
CY2020	jhg	Finance Lease Payments FinanceLeasePayments	700000
CY2020	jhg	Right Of Use Asset Obtained In Exchange For Lease Liability RightOfUseAssetObtainedInExchangeForLeaseLiability	1200000
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P67M
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P74M
CY2021Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P42M
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P52M
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.042
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.042
CY2021Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.035
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.043
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	29600000
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	600000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	27400000
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	600000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	26000000.0
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	600000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	19100000
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	400000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	14500000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	26400000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	143000000.0
CY2021Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	2200000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	10000000.0
CY2021Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	100000
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	133000000.0
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	2100000
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	3000000.0
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	6000000.0
CY2020Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	31400000
CY2019Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	12800000
CY2020	jhg	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sell Off FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSellOff	20500000
CY2021	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	19400000
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	3900000
CY2021	jhg	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings	6600000
CY2020	jhg	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings	-5000000.0
CY2021	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	4600000
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	-3100000
CY2021	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	1200000
CY2020	jhg	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncome	-100000
CY2021Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	8800000
CY2020Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	31400000
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	12800000
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	736900000
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	743000000.0
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	618800000
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	207900000
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	164300000
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	142500000
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-2200000
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-104800000
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4700000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	205700000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	59500000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	137800000
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	626700000
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	820200000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	242100000
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	583500000
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	65300000
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	69700000
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	83800000
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	71000000.0
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	4300000
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	3400000
CY2021Q4	jhg	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Debt Premium DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDebtPremium	2900000
CY2020Q4	jhg	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Debt Premium DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDebtPremium	3800000
CY2021Q4	jhg	Deferred Tax Asset Lease Liabilities DeferredTaxAssetLeaseLiabilities	27800000
CY2020Q4	jhg	Deferred Tax Asset Lease Liabilities DeferredTaxAssetLeaseLiabilities	26000000.0
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	17600000
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	7500000
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	201700000
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	181400000
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	83600000
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	65100000
CY2021Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	118100000
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	116300000
CY2021Q4	jhg	Deferred Tax Liabilities Retirement Benefits DeferredTaxLiabilitiesRetirementBenefits	36500000
CY2020Q4	jhg	Deferred Tax Liabilities Retirement Benefits DeferredTaxLiabilitiesRetirementBenefits	28500000
CY2021Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	665000000.0
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	677400000
CY2021Q4	jhg	Deferred Tax Liabilities Lease Right Of Use Assets DeferredTaxLiabilitiesLeaseRightOfUseAssets	26300000
CY2020Q4	jhg	Deferred Tax Liabilities Lease Right Of Use Assets DeferredTaxLiabilitiesLeaseRightOfUseAssets	24300000
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	9100000
CY2021Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	619200000
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	627400000
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	618800000
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	626700000
CY2020	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	19000000.0
CY2020Q4	jhg	Unrecognized Tax Benefits Including Interest UnrecognizedTaxBenefitsIncludingInterest	15800000
CY2019Q4	jhg	Unrecognized Tax Benefits Including Interest UnrecognizedTaxBenefitsIncludingInterest	14100000
CY2018Q4	jhg	Unrecognized Tax Benefits Including Interest UnrecognizedTaxBenefitsIncludingInterest	12400000
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	5000000.0
CY2020	jhg	Unrecognized Tax Benefits Increase Decrease Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreaseDecreaseResultingFromPriorPeriodTaxPositions	3500000
CY2019	jhg	Unrecognized Tax Benefits Increase Decrease Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreaseDecreaseResultingFromPriorPeriodTaxPositions	3500000
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	1200000
CY2021	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	400000
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1900000
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1900000
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsIncreasesResultingFromForeignCurrencyTranslation	100000
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsIncreasesResultingFromForeignCurrencyTranslation	100000
CY2021Q4	jhg	Unrecognized Tax Benefits Including Interest UnrecognizedTaxBenefitsIncludingInterest	19200000
CY2020Q4	jhg	Unrecognized Tax Benefits Including Interest UnrecognizedTaxBenefitsIncludingInterest	15800000
CY2019Q4	jhg	Unrecognized Tax Benefits Including Interest UnrecognizedTaxBenefitsIncludingInterest	14100000
CY2021Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	2600000
CY2020Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	2100000
CY2019Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	1700000
CY2021Q4	us-gaap	Decrease In Unrecognized Tax Benefits Is Reasonably Possible DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible	1600000
CY2021Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	38100000
CY2020Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	35100000
CY2021Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	10900000
CY2020Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	2100000
CY2021Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	56400000
CY2020Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	24300000
CY2021Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	44800000
CY2020Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	49600000
CY2021Q4	us-gaap	Other Assets Current OtherAssetsCurrent	150200000
CY2020Q4	us-gaap	Other Assets Current OtherAssetsCurrent	111100000
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	157700000
CY2021Q4	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	65300000
CY2020Q4	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	40600000
CY2021Q4	jhg	Accrued Rebates Current AccruedRebatesCurrent	24500000
CY2020Q4	jhg	Accrued Rebates Current AccruedRebatesCurrent	37200000
CY2021Q4	jhg	Other Miscellaneous Accrued Liabilities Current OtherMiscellaneousAccruedLiabilitiesCurrent	76800000
CY2020Q4	jhg	Other Miscellaneous Accrued Liabilities Current OtherMiscellaneousAccruedLiabilitiesCurrent	53400000
CY2021Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	166600000
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	131200000
CY2021Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	17600000
CY2020Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	19800000
CY2021Q4	jhg	Lease Liability Current LeaseLiabilityCurrent	29100000
CY2020Q4	jhg	Lease Liability Current LeaseLiabilityCurrent	27300000
CY2021Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	15500000
CY2020Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	10800000
CY2021Q4	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	42800000
CY2020Q4	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	43000000.0
CY2021Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	271600000
CY2020Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	232100000
CY2021	jhg	Social Security Costs Weighted Average Years SocialSecurityCostsWeightedAverageYears	P0Y9M18D
CY2021	jhg	Unrecognized Compensation Costs Charged To Comprehensive Income Remaining UnrecognizedCompensationCostsChargedToComprehensiveIncomeRemaining	114400000
CY2021	jhg	Unrecognized Compensation Weighted Average Years Charge To Comprehensive Income Remaining UnrecognizedCompensationWeightedAverageYearsChargeToComprehensiveIncomeRemaining	P1Y7M6D
CY2020	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	9800000
CY2021Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	19800000
CY2020Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	16100000
CY2021Q4	jhg	Lease Liability Noncurrent LeaseLiabilityNoncurrent	104600000
CY2020Q4	jhg	Lease Liability Noncurrent LeaseLiabilityNoncurrent	117900000
CY2021Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	10000000.0
CY2020Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	10300000
CY2021Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	134400000
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	144300000
CY2021Q4	us-gaap	Redeemable Noncontrolling Interest Equity Fair Value RedeemableNoncontrollingInterestEquityFairValue	163400000
CY2020Q4	us-gaap	Redeemable Noncontrolling Interest Equity Fair Value RedeemableNoncontrollingInterestEquityFairValue	85800000
CY2021Q4	us-gaap	Minority Interest MinorityInterest	15400000
CY2020Q4	us-gaap	Minority Interest MinorityInterest	17400000
CY2019	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	5800000
CY2021	jhg	Share Based Compensation Net ShareBasedCompensationNet	67900000
CY2020	jhg	Share Based Compensation Net ShareBasedCompensationNet	64600000
CY2019	jhg	Share Based Compensation Net ShareBasedCompensationNet	73700000
CY2021	jhg	Mutual Fund Share Awards Liability Settled Of Share Based Award Plan MutualFundShareAwardsLiabilitySettledOfShareBasedAwardPlan	12900000
CY2020	jhg	Mutual Fund Share Awards Liability Settled Of Share Based Award Plan MutualFundShareAwardsLiabilitySettledOfShareBasedAwardPlan	28200000
CY2019	jhg	Mutual Fund Share Awards Liability Settled Of Share Based Award Plan MutualFundShareAwardsLiabilitySettledOfShareBasedAwardPlan	46200000
CY2021	jhg	Profits Interests And Other Share Based Award Plan ProfitsInterestsAndOtherShareBasedAwardPlan	2900000
CY2020	jhg	Profits Interests And Other Share Based Award Plan ProfitsInterestsAndOtherShareBasedAwardPlan	900000
CY2019	jhg	Profits Interests And Other Share Based Award Plan ProfitsInterestsAndOtherShareBasedAwardPlan	-3900000
CY2021	jhg	Social Security Costs Share Based Award Plan SocialSecurityCostsShareBasedAwardPlan	12900000
CY2020	jhg	Social Security Costs Share Based Award Plan SocialSecurityCostsShareBasedAwardPlan	11400000
CY2019	jhg	Social Security Costs Share Based Award Plan SocialSecurityCostsShareBasedAwardPlan	10800000
CY2021	jhg	Stock Based Payment Expense Charged To Comprehensive Income StockBasedPaymentExpenseChargedToComprehensiveIncome	181000000.0
CY2020	jhg	Stock Based Payment Expense Charged To Comprehensive Income StockBasedPaymentExpenseChargedToComprehensiveIncome	170100000
CY2019	jhg	Stock Based Payment Expense Charged To Comprehensive Income StockBasedPaymentExpenseChargedToComprehensiveIncome	184300000
CY2021Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	45500000
CY2021	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y9M18D
CY2021	jhg	Liability Settled Of Unrecognized Compensation Share Based Award Plan LiabilitySettledOfUnrecognizedCompensationShareBasedAwardPlan	600000
CY2021	jhg	Mutual Fund Share Awards Liability Settled Of Unrecognized Compensation Share Based Award Plan MutualFundShareAwardsLiabilitySettledOfUnrecognizedCompensationShareBasedAwardPlan	900000
CY2021	jhg	Mutual Fund Share Awards Liability Settled Of Unrecognized Compensation Share Based Award Plan Weighted Average Years MutualFundShareAwardsLiabilitySettledOfUnrecognizedCompensationShareBasedAwardPlanWeightedAverageYears	P0Y4M24D
CY2021	jhg	Profits Interests And Other Share Based Award Plan Unrecognized Compensation ProfitsInterestsAndOtherShareBasedAwardPlanUnrecognizedCompensation	1100000
CY2021	jhg	Profits Interests And Other Weighted Average Years ProfitsInterestsAndOtherWeightedAverageYears	P2Y6M
CY2021	jhg	Social Security Costs Share Based Award Plan Unrecognized Compensation SocialSecurityCostsShareBasedAwardPlanUnrecognizedCompensation	20900000
CY2021	jhg	Number Of Plans NumberOfPlans	2
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	8300000
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	8000000.0
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	7900000
CY2021	us-gaap	Defined Benefit Plan Benefit Obligation Payment For Settlement DefinedBenefitPlanBenefitObligationPaymentForSettlement	21200000
CY2021	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	400000
CY2020	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	400000
CY2019	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	400000
CY2021	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	11300000
CY2020	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	12500000
CY2019	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	18600000
CY2021	jhg	Defined Benefit Plan Periodic Benefit Cost Credit Before Contribution To Money Purchase Section DefinedBenefitPlanPeriodicBenefitCostCreditBeforeContributionToMoneyPurchaseSection	4600000
CY2020	jhg	Defined Benefit Plan Periodic Benefit Cost Credit Before Contribution To Money Purchase Section DefinedBenefitPlanPeriodicBenefitCostCreditBeforeContributionToMoneyPurchaseSection	1600000
CY2019	jhg	Defined Benefit Plan Periodic Benefit Cost Credit Before Contribution To Money Purchase Section DefinedBenefitPlanPeriodicBenefitCostCreditBeforeContributionToMoneyPurchaseSection	-2100000
CY2021	jhg	Defined Benefit Plan Contribution To Money Purchase Section DefinedBenefitPlanContributionToMoneyPurchaseSection	-11300000
CY2020	jhg	Defined Benefit Plan Contribution To Money Purchase Section DefinedBenefitPlanContributionToMoneyPurchaseSection	-8200000
CY2019	jhg	Defined Benefit Plan Contribution To Money Purchase Section DefinedBenefitPlanContributionToMoneyPurchaseSection	-7900000
CY2021	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	15900000
CY2018	jhg	Prior Service Cost United Kingdom Ruling PriorServiceCostUnitedKingdomRuling	3700000
CY2021	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	400000
CY2021Q4	us-gaap	Defined Benefit Plan Expected Amortization Of Prior Service Cost Credit Next Fiscal Year DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear	400000
CY2021	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	600000
CY2020	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	900000
CY2019	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	800000
CY2021	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1	-1100000
CY2020	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1	1300000
CY2019	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1	2100000
CY2021	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments	-300000
CY2021	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	13500000
CY2020	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	14100000
CY2019	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	17400000
CY2021	us-gaap	Undistributed Earnings UndistributedEarnings	622100000
CY2020	us-gaap	Undistributed Earnings UndistributedEarnings	161600000
CY2019	us-gaap	Undistributed Earnings UndistributedEarnings	427600000
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	17700000
CY2020	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	4700000
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	11700000
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	604400000
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	156900000
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	415900000
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	167900000
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	179400000
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	188000000.0
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	600000
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	500000
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	600000
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	168500000
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	179900000
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	188600000
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.60
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.87
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.21
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.59
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.87
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.21
CY2021	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.50
CY2020	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.44
CY2019	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.44
CY2021	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	2507900000
CY2020	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	1974600000
CY2019	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	1870100000
CY2021Q4	us-gaap	Due From Related Parties Current DueFromRelatedPartiesCurrent	204100000
CY2020Q4	us-gaap	Due From Related Parties Current DueFromRelatedPartiesCurrent	210800000
CY2021Q4	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	77400000
CY2020Q4	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	55700000
CY2021	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2767000000.0
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2298600000
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2192400000
CY2021Q4	us-gaap	Noncurrent Assets NoncurrentAssets	2606000000.0
CY2020Q4	us-gaap	Noncurrent Assets NoncurrentAssets	2764200000

Files In Submission

Name	View Source	Status
0001558370-22-002009-index-headers.html	Edgar Link	pending
0001558370-22-002009-index.html	Edgar Link	pending
0001558370-22-002009.txt	Edgar Link	pending
0001558370-22-002009-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
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jhg-20211231x10k.htm	Edgar Link	pending
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jhg-20211231xex32d1.htm	Edgar Link	pending
jhg-20211231xex32d2.htm	Edgar Link	pending
jhg-20211231_cal.xml	Edgar Link	unprocessable
jhg-20211231_def.xml	Edgar Link	unprocessable
jhg-20211231_lab.xml	Edgar Link	unprocessable
jhg-20211231_pre.xml	Edgar Link	unprocessable
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report.css	Edgar Link	pending
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$JHG
Janus Henderson Group PLC Stock $jhg

2021 Q4 Form 10-K Financial Statement

#000155837022002009 Filed on February 25, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$JHG Janus Henderson Group PLC Stock $jhg

2021 Q4 Form 10-K Financial Statement

#000155837022002009 Filed on February 25, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$JHG
Janus Henderson Group PLC Stock $jhg