Schedule II - Valuation and Qualifying Accounts (Details) (Allowance for Doubtful Accounts [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Allowance for Doubtful Accounts [Member]
Balance at Beginning of Period	$ 134,230	[1]	$ 130,143	[1]	$ 117,638	[1]
Charged to Costs and Expenses	39,652		47,314		43,081
Impact of Currency	(3,994)		334		4,009
Charged to Other Accounts	5,418	[2]	6,159	[2]	2,394	[2]
Write Offs, Write Downs and Deductions	30,086		49,720		36,979
Balance at End of Period	$ 145,220	[1]	$ 134,230	[1]	$ 130,143	[1]

[1] Amounts include allowance for doubtful accounts classified as current and non-current

[2] Amounts related to businesses acquired, net of amounts related to businesses disposed.