Pensions And Other Postretirement Benefits (Estimated Net Periodic Benefit Cost) (Details)

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Pensions And Other Postretirement Benefits (Estimated Net Periodic Benefit Cost) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Estimated net periodic benefit cost	$ 83.9
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated net periodic benefit cost	54.5
Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated net periodic benefit cost	$ 29.4