XML 59 R38.htm IDEA: XBRL DOCUMENT v3.25.0.1

Note 9 - Leases (Tables)

12 Months Ended

Dec. 31, 2024

Notes Tables

Lease Balance Sheet Disclosure [Table Text Block]

		December 31,
		2024				2023
Operating lease ROU assets:
Other non-current assets		$	84.1			$	69.5
​		​				​
Operating lease liabilities:		​				​
Accounts payable and accrued liabilities		$	16.5			$	23.0
Other non-current liabilities			74.9				54.8
Total operating lease liabilities		$	91.4			$	77.8

Lease, Cost [Table Text Block]

​		Year ended December 31,
​		2024				2023				2022
Operating lease cost(2)		$	19.9			$	22.6			$	27.5

​		Year ended December 31,
​		2024				2023				2022
Operating cash flows from operating leases		$	27.7			$	29.4			$	26.9

​		As of December 31,
Weighted-average remaining lease term (in months):		2024				2023
Operating leases			63				51
Finance leases			39				37

​		As of December 31,
Weighted-average discount rate(1):		2024				2023
Operating leases			4.3	%			2.5	%
Finance leases			5.3	%			4.0	%

Schedule of Lease Liability Maturity [Table Text Block]

Future lease obligations (in millions)(1):		Operating leases
2025		$	17.9
2026		19.3
2027			18.7
2028		19.7
2029			10.5
Thereafter			19.8
Total lease payments			105.9
Less interest			14.5
Total		$	91.4

X

- Definition

The tabular disclosure of lease balance sheet.

+ References

No definition available.

+ Details

Name:	jhg_LeaseBalanceSheetDisclosureTableTextBlock
Namespace Prefix:	jhg_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of undiscounted cash flows of lease liabilities. Includes, but is not limited to, reconciliation of undiscounted cash flows to lease liability recognized in statement of financial position.

+ References

No definition available.

+ Details

Name:	jhg_ScheduleOfLeaseLiabilityMaturityTableTextBlock
Namespace Prefix:	jhg_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-4

+ Details

Name:	us-gaap_LeaseCostTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_TableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration