Shareholders' Equity Common Stock (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended		12 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Common Class B [Member]	Dec. 31, 2012 Common Class B [Member]	Dec. 31, 2008 Common Stock [Member]	Dec. 31, 2013 Common Stock [Member]	Dec. 31, 2013 ESSOP Debt [Member]	Dec. 31, 2012 ESSOP Debt [Member]	Dec. 31, 2008 ESSOP Debt [Member]
Class of Stock
Common Stock, Shares Authorized	500,000,000	500,000,000	100,000,000	100,000,000		500,000,000
Common Stock, Shares, Issued	260,462,217	259,490,089	0	0
Common Stock, shares outstanding			0
Stock shares issued to Employee Stock Purchase Plans					5,488,475
Value of Common shares issued to Employee Stock Purchase Plan					$ 50.0
Debt and Capital Lease Obligations	569.2	572.9					18.0	20.8	30.0
Pre-fundings from ESSOP					$ 20.0
Common stock votes per share	1		0.1