Income Taxes (Reconciliation) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Contingency [Line Items]
Statutory federal income tax rate	35.00%	35.00%	35.00%
State and local taxes, net of federal income tax effect	1.50%	(6.90%)	6.90%
Valuation allowance (release) against capital losses, net operating losses or tax credits	0.00%	(26.50%)	21.90%
Non-deductible compensation	3.60%	17.70%	2.30%
Tax exempt interest income	(2.40%)	(12.70%)	(2.20%)
Sale of subsidiaries	0.00%	1.80%	(3.90%)
Interest expense	(0.10%)	5.30%	0.50%
Lobbying expense	0.40%	3.40%	0.80%
Other, net	(1.00%)	1.80%	1.00%
Effective income tax rate	37.00%	18.90%	62.30%
AmCareco Litigation [Member]
Income Tax Contingency [Line Items]
Deferred tax assets			$ 51.1