XML 97 R62.htm IDEA: XBRL DOCUMENT
v3.25.2

Segment Information - Schedule of Capital Expenditures by Segment (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Schedule of Capital Expenditures by Segment [Line Items] |  |  |  |
Segment, Expenditure, Addition to Long-Lived Assets | $ 7.3 | $ 15.8 | $ 12.9 | $ 24.2
Operating Segments |  |  |  |
Schedule of Capital Expenditures by Segment [Line Items] |  |  |  |
Segment, Expenditure, Addition to Long-Lived Assets | 6.5 | 15.0 | 11.7 | 22.7
Environmental Solutions |  |  |  |
Schedule of Capital Expenditures by Segment [Line Items] |  |  |  |
Segment, Expenditure, Addition to Long-Lived Assets | 4.9 | 13.6 | 9.3 | 19.2
Safety and Security Systems |  |  |  |
Schedule of Capital Expenditures by Segment [Line Items] |  |  |  |
Segment, Expenditure, Addition to Long-Lived Assets | 1.6 | 1.4 | 2.4 | 3.5
Corporate |  |  |  |
Schedule of Capital Expenditures by Segment [Line Items] |  |  |  |
Segment, Expenditure, Addition to Long-Lived Assets | $ 0.8 | $ 0.8 | $ 1.2 | $ 1.5

X
- Definition Schedule of Capital Expenditures by Segment [Line Items] + References No definition available. + Details
Name: | fss_ScheduleOfCapitalExpendituresBySegmentLineItems
Namespace Prefix: | fss_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of expenditure for addition to long-lived assets included in determination of segment assets by chief operating decision maker (CODM) or otherwise regularly provided to CODM. Excludes expenditure for addition to financial instrument, long-term customer relationship of financial institution, mortgage and other servicing rights, deferred policy acquisition cost, and deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 48 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-48 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 49 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-49 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 270 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482964/270-10-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (ee) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 25 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-25 + Details
Name: | us-gaap_SegmentExpenditureAdditionToLongLivedAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=fss_EnvironmentalSolutionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=fss_SafetyAndSecuritySystemsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=us-gaap_CorporateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |