Fair Value Measurements and Derivative Instruments (Tables)

12 Months Ended

Dec. 31, 2014

Fair Value Disclosures [Abstract]

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

The following tables show, by level within the fair value hierarchy, our financial assets and liabilities that are accounted for at fair value on a recurring basis at December 31, 2014 and 2013. Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of a particular input to the fair value measurement requires judgment and may affect their placement within the fair value hierarchy.

	December 31, 2014
	Level 1		Level 2			Level 3		Total
Assets:
Investment securities
Money market funds / commercial paper	$	505,643	$	193,986		$	—	$	699,629
Equity securities	—		27,409			—		27,409
Commingled fixed income securities	—		24,077			—		24,077
Debt securities - U.S. and foreign governments, agencies and municipalities	113,974		24,006			—		137,980
Debt securities - corporate	—		67,448			—		67,448
Mortgage-backed / asset-backed securities	—		156,614			—		156,614
Derivatives
Foreign exchange contracts	—		1,386			—		1,386
Total assets	$	619,617	$	494,926		$	—	$	1,114,543
Liabilities:
Derivatives
Foreign exchange contracts	$	—	$	(2,988	)	$	—	$	(2,988	)
Total liabilities	$	—	$	(2,988	)	$	—	$	(2,988	)

	December 31, 2013
	Level 1		Level 2			Level 3		Total
Assets:
Investment securities
Money market funds / commercial paper	$	403,706	$	224,440		$	—	$	628,146
Equity securities	—		26,536			—		26,536
Commingled fixed income securities	—		24,695			—		24,695
Debt securities - U.S. and foreign governments, agencies and municipalities	122,783		17,653			—		140,436
Debt securities - corporate	—		38,264			—		38,264
Mortgage-backed / asset-backed securities	—		164,598			—		164,598
Derivatives
Foreign exchange contracts	—		1,358			—		1,358
Total assets	$	526,489	$	497,544		$	—	$	1,024,033
Liabilities:
Investment securities
Mortgage-backed securities	$	—	$	(4,445	)	$	—	$	(4,445	)
Derivatives
Foreign exchange contracts	—		(3,009		)	—		(3,009		)
Total liabilities	$	—	$	(7,454	)	$	—	$	(7,454	)

Available-for-sale Securities

At December 31, 2014 and 2013, available-for-sale securities consisted of the following:

	December 31, 2014
	Amortized cost		Gross unrealized gains		Gross unrealized losses			Estimated fair value
U.S. and foreign governments, agencies and municipalities	$	135,839	$	2,905	$	(764	)	$	137,980
Corporate	66,170		1,569		(291		)	67,448
Mortgage-backed / asset-backed securities	155,330		2,362		(1,078		)	156,614
Total	$	357,339	$	6,836	$	(2,133	)	$	362,042

	December 31, 2013
	Amortized cost		Gross unrealized gains		Gross unrealized losses			Estimated fair value
U.S. and foreign governments, agencies and municipalities	$	121,803	$	999	$	(3,372	)	$	119,430
Corporate	37,901		935		(572		)	38,264
Mortgage-backed / asset-backed securities	165,664		1,570		(2,636		)	164,598
Total	$	325,368	$	3,504	$	(6,580	)	$	322,292

Schedule of Available-for-sale Securities Reconciliation

At December 31, 2014, the amortized cost and estimated fair value of available-for-sale securities have scheduled maturities as follows:

	Amortized cost		Estimated fair value
Within 1 year	$	48,452	$	48,527
After 1 year through 5 years	70,734		71,526
After 5 years through 10 years	80,426		81,744
After 10 years	157,727		160,245
Total	$	357,339	$	362,042

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

The fair value of our derivative instruments at December 31, 2014 and 2013 was as follows:

		December 31,
Designation of Derivatives	Balance Sheet Location	2014			2013
Derivatives designated as hedging instruments
Foreign exchange contracts	Other current assets and prepayments	$	762		$	546
	Accounts payable and accrued liabilities	—			(526		)
Derivatives not designated as hedging instruments
Foreign exchange contracts	Other current assets and prepayments	624			812
	Accounts payable and accrued liabilities	(2,988		)	(2,483		)
	Total derivative assets	1,386			1,358
	Total derivative liabilities	(2,988		)	(3,009		)
	Total net derivative liability	$	(1,602	)	$	(1,651	)

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

The following represents the results of cash flow hedging relationships for the years ended December 31, 2014 and 2013:

	Year Ended December 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	2014		2013			2014			2013
Foreign exchange contracts	$	1,878	$	241	Revenue	$	1,276		$	(835	)
					Cost of sales	(140		)	332
						$	1,136		$	(503	)

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

The following represents the results of our non-designated derivative instruments for the years ended December 31, 2014 and 2013:

		Year Ended December 31,
		Derivative Gain (Loss) Recognized in Earnings
Derivatives Instrument	Location of Derivative Gain (Loss)	2014			2013
Foreign exchange contracts	Selling, general and administrative expense	$	(4,701	)	$	(16,574	)

Schedule of Interest Rate Swaps

We had no interest rate swap agreements outstanding at December 31, 2014 or 2013. During 2013, we had interest rate swaps related to our fixed-rate debt outstanding. These interest rate swaps were designated as fair value hedges and changes in the fair value of both the derivative and item being hedged were recognized in earnings. No amount of ineffectiveness was recorded in earnings during 2013. Activity for interest rate swaps outstanding during 2013 was as follows:

		Year Ended December 31, 2013
Derivative Instrument	Location of Gain (Loss)	Derivative Gain Recognized in Earnings		Hedged Item Expense Recognized in Earnings
Interest rate swaps	Interest expense	$	3,798	$	(11,883	)

Fair Value, by Balance Sheet Grouping

The carrying value and estimated fair value of our debt at December 31, 2014 and 2013 was as follows:

	December 31,
	2014		2013
Carrying value	$	3,252,006	$	3,346,295
Fair value	$	3,440,383	$	3,539,022