Held for Sale and Discontinued Operations Schedule of Financial Position of Discontinued Operations Related to DMG (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Assets
Operating lease right-of-use asset	$ 2,736,536	$ 0
Total current assets held for sale, net	6,004,948	5,389,565
Liabilities
Current portion operating leases	367,413	0
Long-term operating leases	2,625,776	0
Total current liabilities held for sale	1,753,310	1,243,759
DMG held for sale | Discontinued Operations, Held-for-sale
Assets
Cash and cash equivalents	533,615	414,683
Other current assets	613,359	557,403
Property and equipment, net	476,781	458,040
Operating lease right-of-use asset	412,388	0
Intangible assets, net	1,317,036	1,316,974
Other long-term assets	120,347	112,127
Goodwill	2,848,262	2,847,178
Valuation Allowance On Disposal Group	(316,840)	(316,840)
Liabilities
Other liabilities	624,319	479,134
Medical payables	512,523	436,839
Current portion operating leases	68,031	0
Current portion of long-term debt	2,832	3,122
Long-term operating leases	387,841	0
Long-term debt	33,073	33,425
Other long-term liabilities	$ 124,691	$ 291,239