Restructuring (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning Balance	$ 35.4	$ 30.2
Expenses recorded	11.7	67.9
Payments made	(23.8)	(17.0)
Restructuring Reserve, Accrual Adjustment	0.5	(42.3)
Restructuring Reserve, Ending Balance	23.8	38.8
Impairment charge on right-of-use assets	$ 0.0	41.0
Israel
Restructuring Reserve [Roll Forward]
Severance pay deposits, employer contribution, percent of employees salary	85.00%
Severance liability, employer contribution, percent of employees' salary	15.00%
Long-term severance payable	$ 8.6		$ 8.6
One Clarivate Program | Science Segment
Restructuring Reserve [Roll Forward]
Expenses recorded	3.1
One Clarivate Program | Intellectual Property Segment
Restructuring Reserve [Roll Forward]
Expenses recorded	2.6
ProQuest Acquisition Integration Program | Science Segment
Restructuring Reserve [Roll Forward]
Expenses recorded	4.8
ProQuest Acquisition Integration Program | Intellectual Property Segment
Restructuring Reserve [Roll Forward]
Expenses recorded	1.3
Other Restructuring Plans | Science Segment
Restructuring Reserve [Roll Forward]
Expenses recorded		22.6
Other Restructuring Plans | Intellectual Property Segment
Restructuring Reserve [Roll Forward]
Expenses recorded		40.9
Severance and Related Benefit Cost
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning Balance	28.3	25.7
Expenses recorded	10.3	22.2
Payments made	(23.7)	(15.9)
Restructuring Reserve, Accrual Adjustment	(0.1)	(1.4)
Restructuring Reserve, Ending Balance	14.8	30.6
Severance and Related Benefit Cost | One Clarivate Program
Restructuring Reserve [Roll Forward]
Expenses recorded	5.7
Severance and Related Benefit Cost | ProQuest Acquisition Integration Program
Restructuring Reserve [Roll Forward]
Expenses recorded	4.3
Severance and Related Benefit Cost | Other Restructuring Plans
Restructuring Reserve [Roll Forward]
Expenses recorded	0.4	22.2
Exit and Disposal Costs
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning Balance	7.1	4.5
Expenses recorded	1.4	45.7
Payments made	(0.1)	(1.1)
Restructuring Reserve, Accrual Adjustment	0.6	(40.9)
Restructuring Reserve, Ending Balance	9.0	8.2
Exit and Disposal Activities
Restructuring Reserve [Roll Forward]
Expenses recorded	1.7	0.5
Lease Exist Cost Including Impairment
Restructuring Reserve [Roll Forward]
Expenses recorded	(0.3)	45.2
Other costs | ProQuest Acquisition Integration Program
Restructuring Reserve [Roll Forward]
Expenses recorded	1.8
Other costs | Other Restructuring Plans
Restructuring Reserve [Roll Forward]
Expenses recorded	$ (0.4)	$ 45.7