Discontinued Operations - Major Classes of Assets and Liabilities Held for Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Assets Held For Sale
Less: current portion	$ 1,144,032	$ 663,276
Total Assets Held For Sale, Less Current Portion		335,713
Liabilities Held For Sale
Less: current portion	496,272	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	189,811	209,497
Accounts receivable, net	199,951	209,496
Investments	404,790	243,496
Property and equipment, net	6,741	6,710
Goodwill	211,735	211,735
Other intangible assets, net	72,108	85,669
Other assets	58,896	32,386
Total Assets Held For Sale	1,144,032	998,989
Less: current portion	1,144,032	663,276
Total Assets Held For Sale, Less Current Portion		335,713
Restricted cash and cash equivalents	33,986	95,202
Restricted investments	358,742	243,496
Restricted other assets	2,387	2,387
Liabilities Held For Sale
Accounts payable	3,889	4,625
Accrued liabilities	124,595	92,170
Medical claims payable	284,171	281,419
Other medical liabilities	54,397	31,769
Deferred income taxes	13,804	15,063
Tax contingencies	5,563	5,388
Deferred credits and other long-term liabilities	9,853	16,850
Total Liabilities Held For Sale	496,272	447,284
Less: current portion	$ 496,272	409,983
Total Liabilities Held For Sale, Less Current Portion		$ 37,301