Shareholders' Equity Schedule of weighted average shares outstanding (Details) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Equity [Abstract]
Shares for basic earnings per share	311.4	[1]	328.5	[1]	335.5	[1]
Common stock equivalents	4.0		4.1		5.4
Shares for diluted earnings per share	315.4		332.6		340.9
Number of participating securities	3.9		4.7		7.6

[1] Includes 3.9 million, 4.7 million and 7.6 million shares of participating securities for the years ended December 31, 2013, 2012, and 2011 respectively.