Schedule I - Condensed Financial Information of Registrant (Condensed Statements of Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended															12 Months Ended
	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013	Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues
Net investment income (loss)																$ 45,166	$ 69,613	$ 82,434
Administrative service fees																(1,725)	34,791	17,968
Divested operations and services revenue																0	0	40,471
Total revenues	3,758,400		3,789,900		3,421,400		3,038,900		2,743,200	2,775,000		2,738,400		2,797,000		14,008,586	11,053,743	11,289,092
Expenses
General and administrative																1,552,364	1,083,694	939,940
Depreciation and amortization																29,786	38,589	31,146
Interest																31,376	32,614	33,220
Divested operations and services expenses																0	0	85,824
Asset Impairment	3,800		84,700													88,536	0	0
Total expenses																13,808,794	10,783,790	11,257,442
Income (loss) from operations before income taxes	16,300	[1],[2]	22,700	[3],[4]	98,800	[5]	62,000	[6]	28,000	108,600		52,000		81,300		199,792	269,953	31,650
Income tax benefit																(54,163)	(99,827)	(5,969)
Net income	4,900	[1],[2]	(8,900)	[3],[4]	120,900	[5],[7]	28,800		19,800	66,800	[8]	33,500	[9]	50,100	[10]	145,629	170,126	122,063
Parent Company [Member]
Revenues
Net investment income (loss)																(125)	1,316	1,459
Other Income																8	229	204
Administrative service fees																477,440	464,393	478,037
Total revenues																477,323	465,938	479,700
Expenses
General and administrative																524,751	431,354	470,156
Depreciation and amortization																28,207	36,185	30,408
Interest																31,376	33,589	35,112
Asset Impairment																88,528	0	0
Total expenses																672,862	501,128	535,676
Income (loss) from operations before income taxes																(195,539)	(35,190)	(55,976)
Income tax benefit																53,011	13,014	5,633
Equity in net income (loss) of subsidiaries																288,157	192,302	172,406
Net income																$ 145,629	$ 170,126	$ 122,063

[1] Includes $3.8 million pretax asset impairment primarily related to our assets held for sale in connection with the Cognizant Transaction and $68.3 million in pretax expenses primarily related to the Cognizant Transaction.

[2] ncludes $35.4 million amortization of deferred costs of health insurer's fee and $25.8 million in other ACA fees.

[3] Includes $31.9 million amortization of deferred costs of health insurer's fee and $26.6 million in other ACA fees.

[4] Includes $84.7 million pretax asset impairment related to our assets held for sale in connection with the Cognizant Transaction and $21.1 million in pretax expenses primarily related to the Cognizant transaction.

[5] Includes $37.8 million amortization of deferred costs of health insurer's fee and $22.5 million in other ACA fees.

[6] Includes $36.3 million amortization of deferred costs of health insurer's fee and $22.5 million in other ACA fees.

[7] Includes tax benefit of $72.6 million, net of adjustments, as a result of a loss on the stock of one of our subsidiaries.

[8] Includes $32.1 million of Medicaid premium revenue as a result of Medicaid/Medi-Cal retroactive rate adjustments for periods prior to 2013.

[9] Includes a $12.9 million in pretax costs related to continuing efforts to address scale issues.

[10] Includes $42.2 million of Medicaid premium revenue as a result of Medicaid/Medi-Cal retroactive rate adjustments related to 2011 and 2012.