Schedule II-Condensed Financial Information Of Registrant (Narrative) (Details) - Anthem, Inc. [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash dividends received from subsidiaries	$ 2,688.8	$ 2,672.3	$ 3,234.5
Cash dividends paid to subsidiaries	31.1	29.9	20.9
Capital contribution to subsidiaries	295.0	939.7	$ 321.8
Amounts due from subsidiaries	1,394.6	0.0
Due to Affiliate	$ 0.0	$ 93.2