CONSOLIDATED BALANCE SHEETS (PARENTHETICAL) (USD $) In Millions, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Consolidated Balance Sheets (Parenthetical)
Allowances for Doubtful Accounts	$ 5.3	$ 5.5
Preferred stock, par value	$ 0.10	$ 0.10
Preferred stock, authorized	50,000,000	50,000,000
Preferred stock, issued	0	0
Common stock, par value	$ 0.10	$ 0.10
Common stock, authorized	500,000,000	500,000,000
Common stock, issued	109,695,171	109,695,171
Common stock, oustanding	107,957,803	107,398,963
Treasury Stock	1,737,368	2,296,208