Schedule II-Condensed Financial Information Of Registrant (Narrative) (Details) - Anthem, Inc. [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash dividends received from subsidiaries	$ 2,672.3	$ 3,234.5	$ 3,046.5
Cash dividends paid to subsidiaries	29.9	20.9	17.9
Capital contribution to subsidiaries	939.7	321.8	$ 121.2
Net due to subsidiaries	93.2	0.0
Amounts due from subsidiaries	$ 0.0	$ 327.3