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Retirement Benefits IV (Details) (Fair Value, Inputs, Level 3 [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Inputs, Level 3 [Member]
Assets Measured Using Unobservable Inputs Level 3 [Abstract]
Fair Value Beginning	$ 126.2	$ 117.8
Relating to assets still held at the reporting date	9.0	9.2
Relating to assets sold during the period	0.2
Purchases, sales and settlements, net	(3.1)	(0.8)
Fair Value Ending	$ 132.3	$ 126.2

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

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