Commitments and Contingencies - Litigation (Details) - Professional liability claims $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($)
Maximum
Commitments and Contingencies
Total annual aggregate limit of insurance coverage	$ 40.0
Maximum | Joint Venture Operations
Commitments and Contingencies
Total annual aggregate limit of insurance coverage	20.0
Minimum | Joint Venture Operations
Commitments and Contingencies
Total annual aggregate limit of insurance coverage	$ 6.0