Fair Value Measurements and Derivative Instruments (Tables)

9 Months Ended

Sep. 30, 2013

Fair Value Disclosures [Abstract]

Available-for-sale Securities

Scheduled maturities of investment securities at September 30, 2013 were as follows:

	Amortized cost		Estimated fair value
Within 1 year	$	55,811	$	55,853
After 1 year through 5 years	61,774		62,635
After 5 years through 10 years	62,694		62,301
After 10 years	162,288		161,276
Total	$	342,567	$	342,065

Schedule of Available-for-sale Securities Reconciliation

Available-for-sale securities at September 30, 2013 and December 31, 2012 consisted of the following:

	September 30, 2013
	Amortized cost		Gross unrealized gains		Gross unrealized losses			Estimated fair value
Money market funds / commercial paper	$	36,134	$	—	$	(13	)	$	36,121
Debt securities - U.S. and foreign governments, agencies and municipalities	116,146		1,405		(2,441		)	115,110
Debt securities - corporate	31,084		915		(465		)	31,534
Mortgage-backed / asset-backed securities	159,203		1,855		(1,758		)	159,300
Total	$	342,567	$	4,175	$	(4,677	)	$	342,065

	December 31, 2012
	Amortized cost		Gross unrealized gains		Gross unrealized losses			Estimated fair value
Money market funds / commercial paper	$	44,611	$	53	$	—		$	44,664
Debt securities - U.S. and foreign governments, agencies and municipalities	127,807		3,972		(56		)	131,723
Debt securities - corporate	41,095		2,851		(20		)	43,926
Mortgage-backed / asset-backed securities	162,180		3,340		(3,145		)	162,375
Total	$	375,693	$	10,216	$	(3,221	)	$	382,688

Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location

		Three Months Ended September 30,
		Derivative Gain (Loss) Recognized in Earnings
Derivatives Instrument	Location of Derivative Gain (Loss)	2013			2012
Foreign exchange contracts	Selling, general and administrative expense	$	(6,798	)	$	939
		Nine Months Ended September 30,
		Derivative Gain (Loss) Recognized in Earnings
Derivatives Instrument	Location of Derivative Gain (Loss)	2013			2012
Foreign exchange contracts	Selling, general and administrative expense	$	(12,793	)	$	(2,129	)

Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location

	Three Months Ended September 30,
	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	2013			2012				2013			2012
Foreign exchange contracts	$	(343	)	$	(863	)	Revenue	$	(169	)	$	456
							Cost of sales	108			(56		)
								$	(61	)	$	400
	Nine Months Ended September 30,
	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	2013			2012				2013			2012
Foreign exchange contracts	$	457		$	(1,672	)	Revenue	$	(922	)	$	1,230
							Cost of sales	520			(129		)
								$	(402	)	$	1,101

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

Designation of Derivatives	Balance Sheet Location	September 30, 2013			December 31, 2012
Derivatives designated as hedging instruments	Other current assets and prepayments:
	Foreign exchange contracts	$	398		$	78
	Other assets:
	Interest rate swaps	1,855			10,117
	Accounts payable and accrued liabilities:
	Foreign exchange contracts	(584		)	(320		)
Derivatives not designated as hedging instruments	Other current assets and prepayments:
	Foreign exchange contracts	1,447			2,504
	Accounts payable and accrued liabilities:
	Foreign exchange contracts	(4,889		)	(854		)
	Total derivative assets	$	3,700		$	12,699
	Total derivative liabilities	(5,473		)	(1,174		)
	Total net derivative (liabilities) assets	$	(1,773	)	$	11,525

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

	September 30, 2013
	Level 1		Level 2			Level 3		Total
Assets:
Investment securities
Money market funds / commercial paper	$	194,486	$	147,259		$	—	$	341,745
Equity securities	—		25,384			—		25,384
Commingled fixed income securities	—		26,772			—		26,772
Debt securities - U.S. and foreign governments, agencies and municipalities	118,071		18,049			—		136,120
Debt securities - corporate	—		31,534			—		31,534
Mortgage-backed / asset-backed securities	—		159,300			—		159,300
Derivatives
Interest rate swaps	—		1,855			—		1,855
Foreign exchange contracts	—		1,845			—		1,845
Total assets	$	312,557	$	411,998		$	—	$	724,555
Liabilities:
Derivatives
Foreign exchange contracts	$	—	$	(5,473	)	$	—	$	(5,473	)
Total liabilities	$	—	$	(5,473	)	$	—	$	(5,473	)

	December 31, 2012
	Level 1		Level 2			Level 3		Total
Assets:
Investment securities
Money market funds / commercial paper	$	581,648	$	34,369		$	—	$	616,017
Equity securities	—		25,106			—		25,106
Commingled fixed income securities	—		29,359			—		29,359
Debt securities - U.S. and foreign governments, agencies and municipalities	124,221		18,908			—		143,129
Debt securities - corporate	—		43,926			—		43,926
Mortgage-backed / asset-backed securities	—		162,375			—		162,375
Derivatives
Interest rate swaps	—		10,117			—		10,117
Foreign exchange contracts	—		2,582			—		2,582
Total assets	$	705,869	$	326,742		$	—	$	1,032,611
Liabilities:
Derivatives
Foreign exchange contracts	$	—	$	(1,174	)	$	—	$	(1,174	)
Total liabilities	$	—	$	(1,174	)	$	—	$	(1,174	)

Fair Value, by Balance Sheet Grouping

	September 30, 2013		December 31, 2012
Carrying value	$	3,650,590	$	4,017,375
Fair value	$	3,867,130	$	4,200,970

Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location

		Three Months Ended September 30,
		Derivative Gain Recognized in Earnings				Hedged Item Expense Recognized in Earnings
Derivative Instrument	Location of Gain (Loss)	2013		2012		2013			2012
Interest rate swaps	Interest expense	$	863	$	1,578	$	(2,742	)	$	(5,484	)
		Nine Months Ended September 30,
		Derivative Gain Recognized in Earnings				Hedged Item Expense Recognized in Earnings
Derivative Instrument	Location of Gain (Loss)	2013		2012		2013			2012
Interest rate swaps	Interest expense	$	3,631	$	8,351	$	(10,969	)	$	(25,652	)