v3.25.1
Document and Entity Information Document
Apr. 30, 2025
Entity Information [Line Items]  
Document Type 8-K
Document Period End Date Apr. 30, 2025
Entity Registrant Name ILLINOIS TOOL WORKS INC.
Entity Incorporation, State or Country Code DE
Entity File Number 1-4797
Entity Tax Identification Number 36-1258310
Entity Address, Address Line One 155 Harlem Avenue
Entity Address, City or Town Glenview
Entity Address, State or Province IL
Entity Address, Postal Zip Code 60025
City Area Code 847
Local Phone Number 724-7500
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Entity Central Index Key 0000049826
Amendment Flag false
NEW YORK STOCK EXCHANGE, INC. | Common Stock  
Entity Information [Line Items]  
Title of 12(b) Security Common Stock
Trading Symbol ITW
Security Exchange Name NYSE
NEW YORK STOCK EXCHANGE, INC. | 0.625% Euro Notes due 2027  
Entity Information [Line Items]  
Title of 12(b) Security 0.625% Euro Notes due 2027
Trading Symbol ITW27
Security Exchange Name NYSE
NEW YORK STOCK EXCHANGE, INC. | 3.250% Euro Notes due 2028  
Entity Information [Line Items]  
Title of 12(b) Security 3.250% Euro Notes due 2028
Trading Symbol ITW28
Security Exchange Name NYSE
NEW YORK STOCK EXCHANGE, INC. | 2.125% Euro Notes due 2030  
Entity Information [Line Items]  
Title of 12(b) Security 2.125% Euro Notes due 2030
Trading Symbol ITW30
Security Exchange Name NYSE
NEW YORK STOCK EXCHANGE, INC. | 1.00% Euro Notes due 2031  
Entity Information [Line Items]  
Title of 12(b) Security 1.00% Euro Notes due 2031
Trading Symbol ITW31
Security Exchange Name NYSE
NEW YORK STOCK EXCHANGE, INC. | 3.375% Euro Notes due 2032  
Entity Information [Line Items]  
Title of 12(b) Security 3.375% Euro Notes due 2032
Trading Symbol ITW32
Security Exchange Name NYSE
NEW YORK STOCK EXCHANGE, INC. | 3.00% Euro Notes due 2034  
Entity Information [Line Items]  
Title of 12(b) Security 3.00% Euro Notes due 2034
Trading Symbol ITW34
Security Exchange Name NYSE