v3.22.2.2
Document and Entity Information - shares
3 Months Ended
Sep. 30, 2022
Oct. 27, 2022
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2022  
Document Transition Report false  
Entity File Number 001-36587  
Entity Registrant Name Catalent, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Address, State or Province NJ  
Entity Tax Identification Number 20-8737688  
Entity Address, Address Line One 14 Schoolhouse Road  
Entity Address, City or Town Somerset,  
Entity Address, Postal Zip Code 08873  
City Area Code (732)  
Local Phone Number 537-6200  
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  
Title of 12(b) Security Common Stock  
Trading Symbol CTLT  
Security Exchange Name NYSE  
Amendment Flag false  
Document Fiscal Year Focus 2023  
Document Fiscal Period Focus Q1  
Entity Central Index Key 0001596783  
Current Fiscal Year End Date --06-30  
Entity Common Stock, Shares Outstanding (shares)   179,963,589