Spin-Off of Quorum Health Corporation (Narrative) (Details) $ in Millions		12 Months Ended
	Apr. 22, 2016	Dec. 31, 2016 USD ($)	Dec. 31, 2017 item	Apr. 29, 2016 item
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of hospitals owned and leased by the Company			125
Noncash Dividend | $		$ 713
QHC stock distribution ratio per share of company stock	0.25
Quorum Health Corporation [Member] | Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Spinoff [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of hospitals owned and leased by the Company				38