Annual report pursuant to Section 13 and 15(d)

Pensions And Other Postretirement Benefits (Estimated Future Benefit Payments) (Details)

v2.4.0.6
Pensions And Other Postretirement Benefits (Estimated Future Benefit Payments) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Pension Benefits [Member]
 
Defined Benefit Plan Disclosure [Line Items]  
2012 $ 73.3
2013 76.9
2014 75.0
2015 76.8
2016 77.1
2017-2021 396.4
Other Benefits [Member] | Less Medicare Subsidy [Member]
 
Defined Benefit Plan Disclosure [Line Items]  
2012 1.0
2013 1.1
2014 1.2
2015 1.3
2016 1.4
2017-2021 9.6
Net Company Payments [Member] | Other Benefits [Member]
 
Defined Benefit Plan Disclosure [Line Items]  
2012 23.8
2013 24.7
2014 26.1
2015 27.3
2016 28.1
2017-2021 143.1
Gross Company Benefits [Member] | Other Benefits [Member]
 
Defined Benefit Plan Disclosure [Line Items]  
2012 24.8
2013 25.8
2014 27.3
2015 28.6
2016 29.5
2017-2021 $ 152.7