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Senior Notes (Tables)

12 Months Ended

Dec. 31, 2013

Debt Disclosure [Abstract]

Summary of principal terms of senior notes

At December 31, 2013, the Company has two senior notes outstanding. The principal terms of these notes are summarized below.

	2022 Senior Notes				2042 Senior Notes
Issue date	October 2012				August 2012
Maturity date	October 2022				August 2042
Potential Call Date	October 2015				August 2017
Par value (in millions)	$	140.0			$	200.0
Call Price	At Par				At Par
Stated coupon	5.25		%		6.375		%
Coupon frequency	Quarterly				Quarterly

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- Definition

Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

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