Income Taxes Deferred Tax Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Abstract]
Accounts receivable reserves	$ 120,983	$ 135,132
Net operating loss (“NOL”) carryforwards	79,765	83,283
Accrued liabilities	88,073	97,008
Pension obligations	1,136	29,274
Other	15,794	14,873
Gross deferred tax assets, net of valuation allowances	305,751	359,570
Valuation allowances	(18,232)	(18,418)
Gross deferred tax assets, net of valuation allowances	287,519	341,152
Amortization of intangibles	568,849	532,133
Contingent convertible debentures interest	322,035	322,610
Fixed assets and depreciation methods	48,034	33,589
Subsidiary stock basis	12,203	12,240
Current and noncurrent assets	3,665	7,097
Other	18,146	54,708
Gross deferred tax liabilities	$ 972,932	$ 962,377