Segment Information Segment Information (Narrative) (Details) $ in Millions	3 Months Ended				12 Months Ended
	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($) region		Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Segment Reporting [Abstract]
Legal settlement(1)	$ 0.0	$ 27.2	$ 0.0	$ 0.0	$ 27.2	[1]	$ 0.0	$ 0.0
Gain (loss) Related to Litigation Settlement, After Tax		$ 27.2
Number of Reportable Segments | region					4

[1] In the third quarter of 2016, we settled claims relating to professional services that had been provided to the Company prior to 2013 in connection with a previously disclosed legal matter. The proceeds, net of legal fees, of $27.2 before tax ($27.2 after tax) were recognized as a reduction of selling, general and administrative expenses in the third quarter of 2016 and were subsequently received by the Company in the fourth quarter of 2016.