Business Combinations - General Narrative (Details)				12 Months Ended
	Oct. 01, 2020 USD ($)	Feb. 28, 2020 USD ($) shares	May 13, 2019 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 USD ($)
Business Acquisition [Line Items]
Conversion ratio			132.13667	1
Total consideration | $	$ 8,839,599,000
Newly issued ordinary shares (in shares)				2,895,638
Percentage of ownership			74.00%
Pro forma expense increase (decrease) | $				$ (70,531,000)
Churchill Sponsor LLC
Business Acquisition [Line Items]
Percentage of ownership			26.00%
Jersey
Business Acquisition [Line Items]
Total consideration | $			$ 3,052,500
Newly issued ordinary shares (in shares)			305,250,000
Newly issued shares value (in dollars per share) | $ / shares			$ 10.00
Warrants excluded from ownership calculation			52,800,000
Compensatory options issued, excluded from ownership calculation			24,806,793
Ordinary shares owned by sponsor, excluded from ownership calculation			10,600,000
Jersey | Company Owners
Business Acquisition [Line Items]
Newly issued ordinary shares (in shares)			217,500,000
Clarivate stock to be issued | $			$ 2,175,000
Jersey | Churchill Public Shareholders
Business Acquisition [Line Items]
Newly issued ordinary shares (in shares)			68,999,999
Clarivate stock to be issued | $			$ 690,000
Jersey | Churchill Sponsor LLC
Business Acquisition [Line Items]
Total consideration | $			$ 187,500
Newly issued ordinary shares (in shares)			17,250,000
Jersey | Certain Investors
Business Acquisition [Line Items]
Newly issued ordinary shares (in shares)			1,500,000
Jersey | Clarivate
Business Acquisition [Line Items]
Conversion ratio			132.13667
Decision Resources Group
Business Acquisition [Line Items]
Total consideration | $		$ 964,997,000
Newly issued ordinary shares (in shares)		2,895,638		2,895,638
Percentage of ownership		100.00%
Pro forma expense increase (decrease) | $				$ 26,348,000	$ 439,000