v3.25.1
Cover Page
Apr. 29, 2025
Cover [Abstract]  
Document Type 8-K
Document Period End Date Apr. 29, 2025
Entity Registrant Name A. O. Smith Corporation
Entity Incorporation, State or Country Code DE
Entity File Number 1-475
Entity Tax Identification Number 39-0619790
Entity Address, Address Line One 11270 West Park Place
Entity Address, City or Town Milwaukee
Entity Address, State or Province WI
Entity Address, Postal Zip Code 53224
City Area Code 414
Local Phone Number 359-4000
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock (par value $1.00 per share)
Trading Symbol AOS
Security Exchange Name NYSE
Entity Emerging Growth Company false
Entity Central Index Key 0000091142
Amendment Flag false