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Consolidated Balance Sheets (Unaudited) Parenthetical (USD $) In Millions, except Share data	Sep. 30, 2011	Dec. 31, 2010
CURRENT ASSETS:
Allowance for doubtful accounts	$ 112.3	$ 111.6
OTHER ASSETS:
Accumulated Amortization on Intangible Assets	$ 166.6	$ 138.1
SHAREHOLDERS' EQUITY:
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized (in shares)	25,000,000	25,000,000
Preferred stock, issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	125,000,000	125,000,000
Common stock, issued (in shares)	108,799,698	108,294,605
Treasury stock at cost (in shares)	27,476,310	26,535,104

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