Condensed Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Allowance for trade receivables	$ 17.2	$ 13.9
Preferred stock, par value (in USP per share)	$ 0	$ 0
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in USD per share)	$ 0.1	$ 0.10
Common stock, shares authorized (in shares)	260,000,000	260,000,000
Common stock, shares issued (in shares)	185,983,792	185,983,792
Treasury Stock, shares (in shares)	52,174,609	52,328,015