Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Allowances for doubtful accounts	$ 57.8	$ 58.9
Preferred stock par value (in usd per shares)	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	500,000us-gaap_PreferredStockSharesAuthorized	500,000us-gaap_PreferredStockSharesAuthorized
Preferred Stock, Shares Issued	0us-gaap_PreferredStockSharesIssued	0us-gaap_PreferredStockSharesIssued
Treasury Stock, Shares	6,600,000us-gaap_TreasuryStockShares	7,500,000us-gaap_TreasuryStockShares
Common Class A [Member]
Common Stock, Par or Stated Value Per Share	$ 0.025	$ 0.025
Common Stock, Shares Authorized	80,000,000	80,000,000
Common Stock, Shares, Issued	40,000,000	40,000,000
Common Class B [Member]
Common Stock, Par or Stated Value Per Share	$ 0.025	$ 0.025
Common Stock, Shares Authorized	80,000,000	80,000,000
Common Stock, Shares, Issued	15,000,000	15,000,000
Common Class C [Member]
Common Stock, Par or Stated Value Per Share	$ 0.025	$ 0.025
Common Stock, Shares Authorized	20,000,000	20,000,000
Common Stock, Shares, Issued	500,000	500,000

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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