Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2011

Dec. 31, 2010

Fair Value Disclosures (Tables) [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	December 31, 2011
	Level 1		Level 2		Level 3		Total
Assets:
Investment securities
Money market funds/commercial paper	$	239,157	$	300,702	$	-	$	539,859
Equity securities		-		22,097		-		22,097
Commingled fixed income securities		-		27,747		-		27,747
Debt securities - U.S. and foreign governments, agencies, and municipalities		93,175		19,042		-		112,217
Debt securities - corporate notes and bonds		-		31,467		-		31,467
Mortgage-backed/asset-backed securities		-		134,262		-		134,262
Derivatives
Interest rate swaps		-		15,465		-		15,465
Foreign exchange contracts		-		4,230		-		4,230
Total assets	$	332,332	$	555,012	$	-	$	887,344
Liabilities:
Derivatives
Foreign exchange contracts	$	-	$	(1,439)	$	-	$	(1,439)
Total liabilities	$	-	$	(1,439)	$	-	$	(1,439)

	December 31, 2010
	Level 1		Level 2		Level 3		Total
Assets:
Investment securities
Money market funds/commercial paper	$	256,074	$	1,531	$	-	$	257,605
Equity securities		-		23,410		-		23,410
Commingled fixed income securities		-		27,158		-		27,158
Debt securities - U.S. and foreign governments, agencies, and municipalities		74,425		20,971		-		95,396
Debt securities - corporate notes and bonds		-		16,343		-		16,343
Mortgage-backed/asset-backed securities		-		94,994		-		94,994
Derivatives
Interest rate swaps		-		10,280		-		10,280
Foreign exchange contracts		-		2,887		-		2,887
Total assets	$	330,499	$	197,574	$	-	$	528,073
Liabilities:
Derivatives
Foreign exchange contracts	$	-	$	(6,907)	$	-	$	(6,907)
Total liabilities	$	-	$	(6,907)	$	-	$	(6,907)

Schedule of Derivative Instruments At Fair Value Table [Text Block]

		Fair Value at December 31,
Designation of Derivatives	Balance Sheet Location	2011			2010
Derivatives designated as hedging instruments	Other current assets and prepayments:
	Foreign exchange contracts	$	780	$	160
	Other assets:
	Interest rate swaps		15,465		10,280
	Accounts payable and accrued liabilities:
	Foreign exchange contracts		79		716
Derivatives not designated as hedging instruments	Other current assets and prepayments:
	Foreign exchange contracts		3,450		2,727
	Accounts payable and accrued liabilities:
	Foreign exchange contracts		1,360		6,191
	Total Derivative Assets	$	19,695	$	13,167
	Total Derivative Liabilities		1,439		6,907
	Total Net Derivative Assets	$	18,256	$	6,260

Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location Table [Text Block]

		Derivative Gain Recognized in Earnings				Hedged Item Expense Recognized in Earnings
Derivative Instrument	Location of Gain (Loss)	2011		2010		2011		2010
Interest rate swaps	Interest expense	$	11,583	$	13,261	$	(33,125)	$	(26,667)

Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location Table [Text Block]

	Derivative Gain (Loss) Recognized in AOCI (Effective Portion)				Location of Gain (Loss) (Effective Portion)	Gain (Loss) Reclassified from AOCI to Earnings (Effective Portion)
Derivative Instrument	2011		2010			2011		2010
Foreign exchange contracts	$	2,141	$	(470)	Revenue	$	(166)	$	1,024
					Cost of sales		(719)		(452)
						$	(885)	$	572

Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]

		Derivative Gain (Loss) Recognized in Earnings
Derivative Instrument	Location of Derivative Gain (Loss)	2011		2010
Foreign exchange contracts	Selling, general and administrative expense	$	(17,214)	$	(22,158)

Fair Value By Balance Sheet Grouping Text Block

	December 31, 2011				December 31, 2010
	Carrying value		Fair value		Carrying value		Fair value
Investment securities	$	860,614	$	867,649	$	538,562	$	540,697
Loan receivables	$	454,838	$	454,838	$	459,235	$	459,235
Derivatives, net	$	18,256	$	18,256	$	6,260	$	6,260
Debt	$	4,233,909	$	4,364,176	$	4,289,248	$	4,376,834