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Revenue - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2020
Revenue and Concentration Risk [Line Items]
Advance Medicare payments to provide relief from economic impacts of COVID-19					$ 29,700,000
Revenue (decrease) increase due to changes in estimated transaction price due to contractual adjustments	$ (5,300,000)		$ 20,100,000
Capitalized costs incurred to obtain or fulfill contract	$ 0		$ 0
Performance obligation estimate
Revenue and Concentration Risk [Line Items]
Change in earnings per share (dollars per share)	$ (0.05)		$ 0.19
Government contracts concentration risk | Medicare | Revenues
Revenue and Concentration Risk [Line Items]
Concentration risk (percent)	15.00%	17.00%	14.00%	17.00%

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Amount, before accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

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