Defined Benefit Plans (Net Actuarial Gain Not Yet Recognized) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Defined Benefit Plan, Net Actuarial Gain (Loss) Not Yet Recognized [Roll Forward]
Actuarial gain (loss) not yet recognized, Before-tax amount, Beginning balance	$ (5.2)
Actuarial gain (loss) not yet recognized, Tax benefit (expense), Beginning balance	1.6
Actuarial gain (loss) not yet recognized, Net-of-tax amount, Beginning balance	(3.6)
Change in net actuarial gain, Before-tax amount	12.7
Change in net actuarial gain, Tax benefit (expense)	(1.4)
Change in net actuarial gain, Net-of-tax amount	11.3
Amount recognized as a component of net loss, Before-tax amount	(0.8)
Amount recognized as a component of net loss, Tax benefit (expense)	0.1
Amount recognized as a component of net loss, Net-of-tax amount	(0.7)
Changes in ownership and other, Before-tax amount	(0.6)
Changes in ownership and other, Tax benefit (expense)	0.2
Changes in ownership and other, Net-of-tax amount	(0.4)
Actuarial gain (loss) not yet recognized, Before-tax amount, Ending balance	6.1
Actuarial gain (loss) not yet recognized, Tax benefit (expense), Ending balance	0.5
Actuarial gain (loss) not yet recognized, Net-of-tax amount, Ending balance	$ 6.6