Condensed Financial Information of Registrant Condensed Financial Information of Registrant (Narratives) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Condensed Financial Statements, Captions [Line Items]
Proceeds from Dividends Received	$ 120,000,000	$ 145,000,000	$ 270,000,000
Capital contributions to subsidiaries	125,000	125,000	125,000
Credit facility amount	50,000,000
Total borrowing guaranteed	20,000,000	20,000,000
Loan maximum borrowing capacity	200,000,000
Mcc [Member]
Condensed Financial Statements, Captions [Line Items]
Credit facility amount	120,000,000
Bank loan	20,000,000
Municipal bonds, fair value	177,000,000
Total borrowing guaranteed	$ 140,000,000