Discontinued Operations - Major Classes of Assets and Liabilities Held for Sale (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Assets Held For Sale
Less: current portion	$ 1,145,904	$ 663,276
Total Assets Held For Sale, Less Current Portion		335,713
Liabilities Held For Sale
Less: current portion	504,459	409,983
Total Liabilities Held For Sale, Less Current Portion		37,301
MCC Business | Discontinued Operations, Held-for-sale
Assets Held For Sale
Cash and cash equivalents	235,873	209,497
Accounts receivable, net	163,216	209,496
Investments	398,741	243,496
Property and equipment, net	7,477	6,710
Goodwill	211,735	211,735
Other intangible assets, net	76,628	85,669
Other assets	52,234	32,386
Total Assets Held For Sale	1,145,904	998,989
Less: current portion	1,145,904	663,276
Total Assets Held For Sale, Less Current Portion		335,713
Restricted cash and cash equivalents	69,971	95,202
Restricted investments	343,348	243,496
Restricted other assets	2,387	2,387
Liabilities Held For Sale
Accounts payable	3,449	4,625
Accrued liabilities	145,558	92,170
Medical claims payable	271,998	281,419
Other medical liabilities	50,384	31,769
Deferred income taxes	13,910	15,063
Tax contingencies	5,462	5,388
Deferred credits and other long-term liabilities	13,698	16,850
Total Liabilities Held For Sale	504,459	447,284
Less: current portion	$ 504,459	409,983
Total Liabilities Held For Sale, Less Current Portion		$ 37,301