Business Combinations - Narrative (Details) $ in Thousands, £ in Millions							3 Months Ended	4 Months Ended	12 Months Ended
	Jan. 10, 2022 USD ($)	Jan. 10, 2022 GBP (£)	Dec. 31, 2021 USD ($)	Dec. 29, 2021 USD ($)	Sep. 09, 2021 USD ($)	Oct. 01, 2020 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2022 USD ($)	Jan. 10, 2022 GBP (£)
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill			$ 738,900				$ 499,309	$ 738,900	$ 738,900	$ 499,309	$ 734,274
Hub and Spoke Innovations
Acquired Finite-Lived Intangible Assets [Line Items]
Base purchase price	$ 3,400											£ 2.5
Total purchase price transferred	3,400	£ 2.5
Goodwill	2,500											1.9
Intangible assets	$ 1,100											£ 0.8
MarkeTouch Media
Acquired Finite-Lived Intangible Assets [Line Items]
Base purchase price			82,000					82,000	82,000
Total purchase price transferred			82,369
Goodwill			42,273					42,273	42,273
Intangible assets			38,000					38,000	38,000
Goodwill expected to be deductible for tax purposes			$ 42,300					$ 42,300	$ 42,300
MarkeTouch Media | Discount Rate
Acquired Finite-Lived Intangible Assets [Line Items]
Measurement input used in estimating the fair values of intangible assets			0.115					0.115	0.115
MarkeTouch Media | Acquired Technology | Royalty Rate
Acquired Finite-Lived Intangible Assets [Line Items]
Measurement input used in estimating the fair values of intangible assets			0.100					0.100	0.100
ReCept
Acquired Finite-Lived Intangible Assets [Line Items]
Base purchase price				$ 100,000
Total purchase price transferred				97,239
Goodwill				77,644
Intangible assets				28,100
Goodwill expected to be deductible for tax purposes				$ 0
ReCept | Discount Rate
Acquired Finite-Lived Intangible Assets [Line Items]
Measurement input used in estimating the fair values of intangible assets				0.150
FDS Amplicare
Acquired Finite-Lived Intangible Assets [Line Items]
Base purchase price					$ 177,000
Total purchase price transferred					178,466
Goodwill					117,784
Intangible assets					$ 70,000
Acquisition related costs									$ 7,000
Revenue from operations since the acquisition date								$ 11,300
Losses from operations since the acquisition date								$ 900
FDS Amplicare | Discount Rate
Acquired Finite-Lived Intangible Assets [Line Items]
Measurement input used in estimating the fair values of intangible assets					0.130
FDS Amplicare | Acquired Technology | Royalty Rate
Acquired Finite-Lived Intangible Assets [Line Items]
Measurement input used in estimating the fair values of intangible assets					0.100
FDS Amplicare | Trade Names | Royalty Rate
Acquired Finite-Lived Intangible Assets [Line Items]
Measurement input used in estimating the fair values of intangible assets					0.020
340B Link Business
Acquired Finite-Lived Intangible Assets [Line Items]
Total purchase price transferred						$ 225,000
Goodwill						160,268
Intangible assets						62,800
Acquisition related costs										$ 6,500
Revenue from operations since the acquisition date							10,200
Losses from operations since the acquisition date							$ 1,300
Goodwill expected to be deductible for tax purposes						$ 93,700
340B Link Business | Discount Rate
Acquired Finite-Lived Intangible Assets [Line Items]
Measurement input used in estimating the fair values of intangible assets						0.140
340B Link Business | Acquired Technology | Royalty Rate
Acquired Finite-Lived Intangible Assets [Line Items]
Measurement input used in estimating the fair values of intangible assets						0.100
340B Link Business | Trade Names | Royalty Rate
Acquired Finite-Lived Intangible Assets [Line Items]
Measurement input used in estimating the fair values of intangible assets						0.005