Statutory Financial Information (Tables)

12 Months Ended

Dec. 31, 2011

Statutory Financial Information [Abstract]

Statutory Accounting Practices Disclosure [Table Text Block]

The statutory operating results of our traditional U.S. insurance subsidiaries, which exclude Tailwind Re and Northwind Re, as well as the statutory results for these two special purpose financial captive U.S. insurance subsidiaries, are as follows:

	Year Ended December 31
	2011		2010		2009
	(in millions of dollars)
Combined Net Income
Traditional U.S. Insurance Subsidiaries	$	642.9	$	628.8	$	639.2
Tailwind Re and Northwind Re	$	80.0	$	79.1	$	87.2
Combined Net Gain from Operations
Traditional U.S. Insurance Subsidiaries	$	664.0	$	645.7	$	741.2
Tailwind Re and Northwind Re	$	80.4	$	79.2	$	87.2

Statutory Capital and Surplus [Table Text Block]

Statutory capital and surplus is as follows:

	December 31
	2011		2010
	(in millions of dollars)
Combined Capital and Surplus
Traditional U.S. Insurance Subsidiaries	$	3,461.3	$	3,395.1
Tailwind Re and Northwind Re	$	1,226.5	$	1,276.9