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Restructuring and Impairment (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Restructuring Reserve [Roll Forward]    
Restructuring Reserve, Beginning Balance $ 11.6 $ 29.0
Expenses recorded 9.4 11.7
Payments made (12.9) (24.2)
Noncash items (0.5) 0.4
Restructuring Reserve, Ending Balance 7.6 16.9
Academia and Government    
Restructuring Reserve [Roll Forward]    
Expenses recorded 5.1 5.9
Life Science and Healthcare Group    
Restructuring Reserve [Roll Forward]    
Expenses recorded 1.6 1.7
Intellectual Property    
Restructuring Reserve [Roll Forward]    
Expenses recorded 2.7 4.1
One Clarivate Program | Academia and Government    
Restructuring Reserve [Roll Forward]    
Expenses recorded 0.0 2.9
One Clarivate Program | Life Science and Healthcare Group    
Restructuring Reserve [Roll Forward]    
Expenses recorded 0.0 0.8
One Clarivate Program | Intellectual Property    
Restructuring Reserve [Roll Forward]    
Expenses recorded 0.0 2.0
ProQuest Acquisition Integration Program | Academia and Government    
Restructuring Reserve [Roll Forward]    
Expenses recorded 5.1 3.2
ProQuest Acquisition Integration Program | Life Science and Healthcare Group    
Restructuring Reserve [Roll Forward]    
Expenses recorded 1.6 0.9
ProQuest Acquisition Integration Program | Intellectual Property    
Restructuring Reserve [Roll Forward]    
Expenses recorded 2.7 1.9
Other Restructuring Plans | Academia and Government    
Restructuring Reserve [Roll Forward]    
Expenses recorded 0.0 (0.2)
Other Restructuring Plans | Intellectual Property    
Restructuring Reserve [Roll Forward]    
Expenses recorded 0.0 0.2
Severance and Related Benefit Cost    
Restructuring Reserve [Roll Forward]    
Restructuring Reserve, Beginning Balance 11.5 28.3
Expenses recorded 9.3 10.3
Payments made (12.8) (23.7)
Noncash items (0.5) (0.1)
Restructuring Reserve, Ending Balance 7.5 14.8
Severance and Related Benefit Cost | One Clarivate Program    
Restructuring Reserve [Roll Forward]    
Expenses recorded 0.0 5.7
Severance and Related Benefit Cost | ProQuest Acquisition Integration Program    
Restructuring Reserve [Roll Forward]    
Expenses recorded 9.3 4.2
Severance and Related Benefit Cost | Other Restructuring Plans    
Restructuring Reserve [Roll Forward]    
Expenses recorded 0.0 0.4
Exit and Disposal Costs    
Restructuring Reserve [Roll Forward]    
Expenses recorded 0.1 1.7
Exit and Disposal Costs | ProQuest Acquisition Integration Program    
Restructuring Reserve [Roll Forward]    
Expenses recorded 0.1 1.8
Exit and Disposal Costs | Other Restructuring Plans    
Restructuring Reserve [Roll Forward]    
Expenses recorded 0.0 (0.1)
Lease Abandonment Costs    
Restructuring Reserve [Roll Forward]    
Expenses recorded 0.0 (0.3)
Lease Abandonment Costs | Other Restructuring Plans    
Restructuring Reserve [Roll Forward]    
Expenses recorded 0.0 (0.3)
Exit, Disposal and Abandonment Costs    
Restructuring Reserve [Roll Forward]    
Restructuring Reserve, Beginning Balance 0.1 0.7
Expenses recorded 0.1 1.4
Payments made (0.1) (0.5)
Noncash items 0.0 0.5
Restructuring Reserve, Ending Balance $ 0.1 $ 2.1