Fair Value Measurements and Derivative Instruments (Tables)

3 Months Ended

Mar. 31, 2012

Fair Value Disclosures [Abstract]

Fair Value Assets and Liabilities Measured on Recurring Basis

	March 31, 2012
	Level 1		Level 2			Level 3		Total
Assets:
Investment securities
Money market funds / commercial paper	$	346,024	$	283,575		$	—	$	629,599
Equity securities	—		24,888			—		24,888
Commingled fixed income securities	—		28,152			—		28,152
Debt securities - U.S. and foreign governments, agencies and municipalities	123,302		19,288			—		142,590
Debt securities - corporate	—		33,820			—		33,820
Mortgage-back / asset-back securities	—		136,322			—		136,322
Derivatives
Interest rate swaps	—		14,468			—		14,468
Foreign exchange contracts	—		900			—		900
Total assets	$	469,326	$	541,413		$	—	$	1,010,739
Liabilities:
Derivatives
Foreign exchange contracts	$	—	$	(4,144	)	$	—	$	(4,144	)
Total liabilities	$	—	$	(4,144	)	$	—	$	(4,144	)

	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	—		31,467			—		31,467
Mortgage-back / asset-back 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	)

Derivative in Fair Value Hedging Relationships

		Three Months Ended March 31,
		Derivative Gain Recognized in Earnings				Hedged Item Expense Recognized in Earnings
Derivative Instrument	Location of Gain (Loss)	2012		2011		2012			2011
Interest rate swaps	Interest expense	$	3,327	$	1,733	$	(10,109	)	$	(4,625	)

Designation of Derivatives	Balance Sheet Location	March 31, 2012		December 31, 2011
Derivatives designated as hedging instruments	Other current assets and prepayments:
	Foreign exchange contracts	$	384	$	780
	Other assets:
	Interest rate swaps	14,468		15,465
	Accounts payable and accrued liabilities:
	Foreign exchange contracts	108		79
Derivatives not designated as hedging instruments	Other current assets and prepayments:
	Foreign exchange contracts	516		3,450
	Accounts payable and accrued liabilities:
	Foreign exchange contracts	4,036		1,360
	Total Derivative Assets	$	15,368	$	19,695
	Total Derivative Liabilities	4,144		1,439
	Total Net Derivative Assets	$	11,224	$	18,256

Derivative Cash Flow Hedging Relationships

	Three Months Ended March 31,
	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	2012			2011				2012			2011
Foreign exchange contracts	$	(659	)	$	(315	)	Revenue	$	301		$	(9	)
							Cost of sales	(66		)	(262		)
								$	235		$	(271	)

Non-Designated Derivative Instruments

		Three Months Ended March 31,
		Derivative Gain (Loss) Recognized in Earnings
Derivatives Instrument	Location of Derivative Gain (Loss)	2012			2011
Foreign exchange contracts	Selling, general and administrative expense	$	(4,224	)	$	(7,242	)

Fair Value, by Balance Sheet Grouping

	March 31, 2012		December 31, 2011
Carrying value	$	4,260,628	$	4,233,909
Fair value	$	4,419,066	$	4,364,176