Income Tax Expense (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Income Tax Expense [Abstract]
Earnings from continuing operations before income taxes	$ 36.2	$ 15.1
Income tax expense	$ 19.3	$ 11.9
Effective tax rate	53.30%	78.80%