Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)		12 Months Ended
	Oct. 01, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule Of Goodwill And Intangible Assets [Line Items]
Goodwill impairment charge		$ 0	$ 0	$ 25,700,000
Goodwill		974,478,000	974,729,000	974,110,000
Accumulated impairment losses associated with goodwill		$ 0	0	39,200,000
NantHealth, Inc. [Member] | Customer Relationship Intangible [Member]
Schedule Of Goodwill And Intangible Assets [Line Items]
Intangible asset impairment charges			$ 23,100,000	8,100,000
Hospital and Health Systems [Member]
Schedule Of Goodwill And Intangible Assets [Line Items]
Goodwill impairment charge	$ 25,700,000			25,700,000
Goodwill				$ 485,500,000