Long-term Debt - Schedule of Notes Payable (Details) - Other Notes Payable - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Notes payable	$ 44.7	$ 104.2
Sale/leaseback transactions involving real estate accounted for as financings
Debt Instrument [Line Items]
Notes payable	28.0	82.8
Construction of a new hospital | LIBOR
Debt Instrument [Line Items]
Notes payable	$ 12.9	14.6
Effective interest rate (percent)	5.00%
Other
Debt Instrument [Line Items]
Notes payable	$ 3.8	$ 6.8
Minimum | Sale/leaseback transactions involving real estate accounted for as financings
Debt Instrument [Line Items]
Effective interest rate (percent)	8.10%	7.80%
Minimum | Construction of a new hospital | LIBOR
Debt Instrument [Line Items]
Effective interest rate (percent)		4.80%
Minimum | Other
Debt Instrument [Line Items]
Effective interest rate (percent)	4.30%	4.30%
Maximum | Sale/leaseback transactions involving real estate accounted for as financings
Debt Instrument [Line Items]
Effective interest rate (percent)	11.20%	11.20%
Maximum | Construction of a new hospital | LIBOR
Debt Instrument [Line Items]
Effective interest rate (percent)		5.00%
Maximum | Other
Debt Instrument [Line Items]
Effective interest rate (percent)	6.80%	6.80%