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Stock-Based Compensation Stock-Based Compensation (Stock Plans) (Details)
In Millions, unless otherwise specified
12 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Restricted Stock Units (RSU) [Member]
Dec. 31, 2013
2013 Stock Plan [Member]
Dec. 31, 2013
2010 Stock Plan [Member]
Dec. 31, 2013
2003 Stock Plan [Member]
Dec. 31, 2013
2013 Stock Plan [Member]
Dec. 31, 2013
2013 Stock Plan [Member]
Restricted Stock Units (RSU) [Member]
Dec. 31, 2013
Minimum [Member]
Restricted Stock Units (RSU) [Member]
Dec. 31, 2013
Minimum [Member]
Stock Price Based RSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized             62.5      
Shares Reserved For Issuance Of Restricted Stock Units             0.1      
Shares Reserved For Issuance Of Performance Based Restricted Stock Units             6.6      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant             55.8      
Multiplier For Calculating Share Availability Under A Stock Plan       3.5            
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period     3 years         3 years 1 year 1 year
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 5.9 11.1     0.7 5.2        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 4.2 5.5     2.3