Claims Payable (Tables)

6 Months Ended

Jun. 30, 2012

Insurance [Abstract]

Components of the change in claims payable

The following table presents the components of the change in claims payable for the periods presented (dollars in thousands):

	Six Months Ended June 30,
	2012			2011
Claims payable, beginning of period	$	573,448		$	510,675
Health benefits expense incurred during the period:
Related to current year	3,528,233			2,613,310
Related to prior years	(97,982		)	(74,588		)
Total incurred	3,430,251			2,538,722
Health benefits payments during the period:
Related to current year	2,880,028			2,168,850
Related to prior years	437,173			361,039
Total payments	3,317,201			2,529,889
Claims payable, end of period	$	686,498		$	519,508