Reinsurance (Tables)

12 Months Ended

Dec. 31, 2011

Reinsurance Disclosures [Abstract]

Reinsurance Premiums for Insurance Companies by Product Segment Table [Text Block]

Reinsurance data is as follows:

	Year Ended December 31
	2011			2010			2009
	(in millions of dollars)
Direct Premium Income	$	7,521.5		$	7,434.3		$	7,494.7
Reinsurance Assumed	216.6			241.3			239.5
Reinsurance Ceded	(223.9		)	(244.2		)	(258.7		)
Net Premium Income	$	7,514.2		$	7,431.4		$	7,475.5
Ceded Benefits and Change in Reserves for Future Benefits	$	609.2		$	602.2		$	604.2