Summary of Significant Accounting Policies - Intangible Asset Useful Lives (Details)		12 Months Ended
	Feb. 26, 2021	Dec. 31, 2021
Client relationships
Finite-Lived Intangible Assets [Line Items]
Weighted-average amortization period	16 years	15 years
Client relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Weighted-average amortization period		10 years
Client relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Weighted-average amortization period		16 years
Provider Network
Finite-Lived Intangible Assets [Line Items]
Weighted-average amortization period		15 years
Technology
Finite-Lived Intangible Assets [Line Items]
Weighted-average amortization period		5 years
Technology | Minimum
Finite-Lived Intangible Assets [Line Items]
Weighted-average amortization period		4 years
Technology | Maximum
Finite-Lived Intangible Assets [Line Items]
Weighted-average amortization period		5 years
Trade Names
Finite-Lived Intangible Assets [Line Items]
Weighted-average amortization period	10 years	9 years
Trade Names | Minimum
Finite-Lived Intangible Assets [Line Items]
Weighted-average amortization period		1 year