Business Acquisitions and Divestitures (Summarized Financial Information) (Details) - USD ($) $ in Millions	3 Months Ended				12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) income from discontinued operations, net of tax	$ 0.0	$ 0.0	$ 0.0	$ 9.6	$ 0.0	$ 9.6	$ (144.6)
1-800 Contacts [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues							434.7
Income from discontinued operations before tax							17.3
Income tax benefit							(2.6)
Income from discontinued operations							19.9
Loss on disposal from discontinued operations, net of tax							(164.5)
(Loss) income from discontinued operations, net of tax						$ 9.6	$ (144.6)