Employee Benefits (Fair Value) (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Private equities [Member]
fund
Dec. 31, 2012
Private equities [Member]
fund
Dec. 31, 2013
Fixed Income Funds [Member]
fund
Dec. 31, 2012
Fixed Income Funds [Member]
fund
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Level 1 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Level 1 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Level 2 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Level 2 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Level 3 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Fair Value [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Fair Value [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Equities [Member]
Level 1 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Equities [Member]
Level 1 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Equities [Member]
Level 2 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Equities [Member]
Level 2 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Equities [Member]
Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Equities [Member]
Level 3 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Equities [Member]
Fair Value [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Equities [Member]
Fair Value [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Private equities [Member]
Level 1 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Private equities [Member]
Level 1 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Private equities [Member]
Level 2 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Private equities [Member]
Level 2 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Private equities [Member]
Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Private equities [Member]
Level 3 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Private equities [Member]
Fair Value [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Private equities [Member]
Fair Value [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Corporate [Member]
Level 1 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Corporate [Member]
Level 1 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Corporate [Member]
Level 2 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Corporate [Member]
Level 2 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Corporate [Member]
Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Corporate [Member]
Level 3 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Corporate [Member]
Fair Value [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Corporate [Member]
Fair Value [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Government [Member]
Level 1 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Government [Member]
Level 1 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Government [Member]
Level 2 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Government [Member]
Level 2 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Government [Member]
Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Government [Member]
Level 3 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Government [Member]
Fair Value [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Government [Member]
Fair Value [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Other Fixed Income Investments [Domain]
Level 1 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Other Fixed Income Investments [Domain]
Level 2 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Other Fixed Income Investments [Domain]
Level 3 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Other Fixed Income Investments [Domain]
Fair Value [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Absolute Return [Member]
Level 1 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Absolute Return [Member]
Level 1 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Absolute Return [Member]
Level 2 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Absolute Return [Member]
Level 2 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Absolute Return [Member]
Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Absolute Return [Member]
Level 3 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Absolute Return [Member]
Fair Value [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Absolute Return [Member]
Fair Value [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Interest bearing [Member]
Level 1 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Interest bearing [Member]
Level 1 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Interest bearing [Member]
Level 2 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Interest bearing [Member]
Level 2 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Interest bearing [Member]
Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Interest bearing [Member]
Level 3 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Interest bearing [Member]
Fair Value [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Interest bearing [Member]
Fair Value [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Total investments [Member]
Level 1 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Total investments [Member]
Level 1 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Total investments [Member]
Level 2 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Total investments [Member]
Level 2 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Total investments [Member]
Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Total investments [Member]
Level 3 [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Total investments [Member]
Fair Value [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Total investments [Member]
Fair Value [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Other assets, net [Member]
Fair Value [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Other assets, net [Member]
Fair Value [Member]
Dec. 31, 2013
Fair Value, Measurements, Recurring [Member]
Fixed income [Member]
Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Fixed income [Member]
Level 3 [Member]
Dec. 31, 2013
Minimum [Member]
Dec. 31, 2013
Maximum [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]                                                                                                                                                                  
Pension assets at fair value $ 808.4 $ 799.4 $ 727.7         $ 255.2 $ 238.9 $ 454.3 $ 484.7 $ 98.9 $ 74.3 $ 808.4 $ 799.4 $ 113.3 $ 79.9 $ 106.4 $ 92.5 $ 0 $ 0 $ 219.7 $ 172.4 $ 0 $ 0 $ 0 $ 0 $ 60.3 [1] $ 38.8 [2] $ 60.3 $ 38.8 $ 4.3 $ 15.3 $ 106.5 $ 89.9 $ 38.6 $ 35.5 $ 149.4 $ 140.7 $ 98.0 $ 109.1 $ 102.8 $ 145.2 $ 0 $ 0 $ 200.8 $ 254.3 $ 10.1 $ 0 $ 0 $ 10.1 $ 6.2 $ 0.6 $ 138.6 $ 157.1 $ 0 $ 0 $ 144.8 $ 157.7 $ 23.3 $ 34.0 $ 0 $ 0 $ 0 $ 0 $ 23.3 $ 34.0 $ 255.2 $ 238.9 $ 454.3 $ 484.7 $ 98.9 $ 74.3 $ 808.4 $ 797.9 $ 0 $ 1.5 $ 38.6 [3] $ 35.5 [4]    
Unfunded Commitments                                                       18.0 [1] 14.2 [2]                                                                                                 16.0 [3] 3.0 [4]    
Number of private equity funds investing in renewable solar energy       5 4                                                                                                                                                        
Number of fixed income funds investing in debt securities secured by royalty payments           3 2                                                                                                                                                    
Number of funds             3                                                                                                                                                    
Number of funds investing in Indian mezzanine debt             1                                                                                                                                                    
Number of funds for which redemptions are not permitted             2                                                                                                                                                    
Redemption notice period for assets with fair value estimated using NAV per share                                                                                                                                                               1 day 90 days
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]                                                                                                                                                                  
Fair value of plan assets at prior year end 808.4 799.4 727.7         255.2 238.9 454.3 484.7 74.3 43.6 808.4 799.4 113.3 79.9 106.4 92.5 0 0 219.7 172.4 0 0 0 0 38.8 [2] 29.0 60.3 38.8 4.3 15.3 106.5 89.9 38.6 35.5 149.4 140.7 98.0 109.1 102.8 145.2 0 0 200.8 254.3 10.1 0 0 10.1 6.2 0.6 138.6 157.1 0 0 144.8 157.7 23.3 34.0 0 0 0 0 23.3 34.0 255.2 238.9 454.3 484.7 98.9 74.3 808.4 797.9 0 1.5 35.5 [4] 14.6    
Purchases                       16.0 34.0                             6.4 8.4                                                                                                 9.6 25.6    
Sales                       (11.7) (7.2)                             (6.4) (2.0)                                                                                                 (5.3) (5.2)    
Unrealized gain (loss)                       20.3 3.9                             21.5 3.4                                                                                                 (1.2) 0.5    
Fair value of plan assets at year end $ 808.4 $ 799.4 $ 727.7         $ 255.2 $ 238.9 $ 454.3 $ 484.7 $ 98.9 $ 74.3 $ 808.4 $ 799.4 $ 113.3 $ 79.9 $ 106.4 $ 92.5 $ 0 $ 0 $ 219.7 $ 172.4 $ 0 $ 0 $ 0 $ 0 $ 60.3 [1] $ 38.8 [2] $ 60.3 $ 38.8 $ 4.3 $ 15.3 $ 106.5 $ 89.9 $ 38.6 $ 35.5 $ 149.4 $ 140.7 $ 98.0 $ 109.1 $ 102.8 $ 145.2 $ 0 $ 0 $ 200.8 $ 254.3 $ 10.1 $ 0 $ 0 $ 10.1 $ 6.2 $ 0.6 $ 138.6 $ 157.1 $ 0 $ 0 $ 144.8 $ 157.7 $ 23.3 $ 34.0 $ 0 $ 0 $ 0 $ 0 $ 23.3 $ 34.0 $ 255.2 $ 238.9 $ 454.3 $ 484.7 $ 98.9 $ 74.3 $ 808.4 $ 797.9 $ 0 $ 1.5 $ 38.6 [3] $ 35.5 [4]    
[1] onsists of five private equity funds investing in renewable solar energy, acquisition of pharmaceutical company interests, Chinese technology and healthcare companies.
[2] Consists of four private equity funds investing in renewable solar energy, acquisition of pharmaceutical company interests and Chinese technology and healthcare companies.
[3] Consists of three fixed income funds which invest in debt securities secured by royalty payments from marketers of pharmaceutical products.
[4] Consists of three fixed income funds, two of which invest in debt securities secured by royalty payments from top-tier marketers of pharmaceutical products, and one which invests in Indian mezzanine debt.