Retirement Benefits (Net Amounts Included In Accumulated Other Comprehensive Loss (Income) Not Been Recognized As Components Of Net Periodic Benefit Costs) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	$ 427.2	$ 686.8
Prior service credit	(3.0)	(3.9)
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	427.2	686.8
Prior service credit	(3.0)	(3.9)
Net amount before tax at December 31	424.2	682.9
Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	169.6	191.0
Prior service credit	(102.4)	(103.0)
Net amount before tax at December 31	$ 67.2	$ 88.0