Related Party Transactions (Details) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($) property option	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Related party transaction
Additional revenue potential, percentage	1.00%
Atria
Related party transaction
Agreement renewal period, in years	10 years
Related party costs	$ 58.0	$ 52.7	$ 44.2
Ardent
Related party transaction
Rent multiplier	400.00%
Rent multiplier cap, percentage	2.50%
Options to extend term of lease | option	1
Revenue from related parties	$ 42.9
Ardent | Restructuring Charges
Related party transaction
Revenue from related parties	$ 40.0
Ardent | Hospitals
Related party transaction
Number of leased properties | property	10
Minimum | Atria
Related party transaction
Property management fee, percentage	4.50%
Maximum | Atria
Related party transaction
Property management fee, percentage	5.00%