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Commitments and Contingent Liabilities (Tables)

3 Months Ended

Mar. 31, 2013

Commitments And Contingent Liabilities [Abstract]

Credit Facilities [Table Text Block]

					Amount Utilized(1)
	Facility Capacity		Maturity Date		March 31, 2013			December 31, 2012			Basis of Fees
	$850.0		December 2015		$	140.0		$	402.9		Senior unsecured long-term debt rating
	$200.0		September 2019			200.0			200.0		Fixed
	$120.0		May 2016			100.0			100.0		Fixed
	$270.0		November 2017			270.0			--		Fixed
(1)	Represents issued but undrawn letters of credit. There was no cash borrowed for the periods presented.

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