Document and Entity Information
Dec. 30, 2021
Cover [Abstract]  
Title of 12(b) Security Common Stock, par value $1.00 per share
Entity Incorporation, State or Country Code DE
Document Type 8-K
Entity Central Index Key 0000277509
Entity Registrant Name Federal Signal Corporation
Document Period End Date Dec. 30, 2021
Amendment Flag false
Entity File Number 001-6003
Entity Tax Identification Number 36-1063330
Entity Address, Address Line One 1415 W. 22nd Street
Entity Address, City or Town Oak Brook
Entity Address, State or Province IL
Entity Address, Postal Zip Code 60523
City Area Code 630
Local Phone Number 954-2000
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Trading Symbol FSS
Security Exchange Name NYSE
Entity Emerging Growth Company false