Fair Value Of Financial Instruments (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Recently Adopted Accounting Guidance
Fair Value Level Into Level 3 Transfers Amount	$ 0.1
Transfers of financial assets from level 2 to level 1	81.2
Fair Value Level One To Level Two Transfers Amount	35.8
General and limited partnership interests in investment partnerships	56.0	21.5
Direct investments in private equity companies held by private equity funds	8.2	13.5
Commitments Investments In Affiliated And Unaffiliated Partnerships	12.4	3.0
Stated interest rate	6.70%
Transfers of financial assets from Level 3	$ 7.2