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Cover
May 20, 2025
Document Type 8-K
Amendment Flag false
Document Period End Date May 20, 2025
Entity File Number 001-35971
Entity Registrant Name Allegion plc
Entity Central Index Key 0001579241
Entity Tax Identification Number 98-1108930
Entity Incorporation, State or Country Code L2
Entity Address, Address Line One Block D
Entity Address, Address Line Two Iveagh Court
Entity Address, Address Line Three Harcourt Road
Entity Address, City or Town Dublin 2
Entity Address, Country IE
Entity Address, Postal Zip Code D02 VH94
Country Region 353
City Area Code 1
Local Phone Number 2546200
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Ordinary shares, par value $0.01 per share  
Title of 12(b) Security Ordinary shares, par value $0.01 per share
Trading Symbol ALLE
Security Exchange Name NYSE
3.500% Senior Notes due 2029  
Title of 12(b) Security 3.500% Senior Notes due 2029
Trading Symbol ALLE 3 ½
Security Exchange Name NYSE