Medical Cost and Medical Costs Payable Medical Cost and Medical Costs Payable (Tables)

12 Months Ended

Dec. 31, 2013

Medical Cost Development [Abstract]

Changes In Provision For Insured Events Related To Current And Prior Year [Table Text Block]

The following table provides details of the Company's net favorable medical cost development:

	For the Years Ended December 31,
(in millions)	2013		2012		2011
Related to Prior Years	$	680	$	860	$	720

Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block]

The following table shows the components of the change in medical costs payable for the years ended December 31:

(in millions)	2013			2012			2011
Medical costs payable, beginning of period	$	11,004		$	9,799		$	9,220
Acquisitions	—			1,029			155
Reported medical costs:
Current year	89,970			81,086			75,052
Prior years	(680		)	(860		)	(720		)
Total reported medical costs	89,290			80,226			74,332
Claim payments:
Payments for current year	(78,989		)	(71,832		)	(65,763		)
Payments for prior year	(9,730		)	(8,218		)	(8,145		)
Total claim payments	(88,719		)	(80,050		)	(73,908		)
Medical costs payable, end of period	$	11,575		$	11,004		$	9,799