Segments (Textuals) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013
Segment Reporting Information [Line Items]
Net Favorable Loss Development In US Property And Casualty Segment	$ (40.8)	$ (40.8)
International Segment Reserve Increase For Surety Bonds	$ 70.3	$ 70.3