XML 10 R1.htm IDEA: XBRL DOCUMENT v3.22.0.1
Cover Page - shares
6 Months Ended
Dec. 31, 2021
Jan. 26, 2022
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Dec. 31, 2021  
Document Transition Report false  
Entity File Number 1-5828  
Entity Registrant Name CARPENTER TECHNOLOGY CORPORATION  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 23-0458500  
Entity Address, Address Line One 1735 Market Street  
Entity Address, Address Line Two 15th Floor  
Entity Address, City or Town Philadelphia,  
Entity Address, State or Province PA  
Entity Address, Postal Zip Code 19103  
City Area Code 610  
Local Phone Number 208-2000  
Title of 12(b) Security Common Stock, $5 Par Value  
Trading Symbol CRS  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   48,269,470
Entity Central Index Key 0000017843  
Amendment Flag false  
Current Fiscal Year End Date --06-30  
Document Fiscal Year Focus 2022  
Document Fiscal Period Focus Q2