Significant Accounting Policies - Definite Lived Intangible Assets (Details)	12 Months Ended
	Dec. 31, 2021
Reacquired right
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period (years)	15 years
Database
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period (years)	17 years
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period (years)	17 years
Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period (years)	10 years
Partnership agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period (years)	14 years
Trademark
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period (years)	2 years