CONSOLIDATED BALANCE SHEETS (PARENTHETICAL) (USD $) In Millions, except Share data, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Consolidated Balance Sheets (Parenthetical) [Abstract]
Allowances for Doubtful Accounts	$ 5.6	$ 5.9
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	107,163,790	106,354,612
Treasury Stock	2,531,381	3,340,559