Business and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Discription of Business Basis Of Presentation And Disclosure [Abstract]

Changes in allowances

	2012		2011		2010
Balance as of January 1	$	24,412	$	22,505	$	28,520
Current year increases		8,028		17,008		16,219
Write-offs, net of recoveries and other		(12,034)		(15,101)		(22,234)
Balance as of December 31	$	20,406	$	24,412	$	22,505