Derivative Financial Instruments - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Maximum length of future cash flow hedges	6 years 2 months 12 days
Recognized gain (loss) on the ineffective portion	$ 0	$ 100,000	$ 500,000
Accumulated net loss on derivative contracts included in accumulated other comprehensive loss expected to be reclassified to interest expense or cost of sales in the following 12 months	19,400,000
Foreign-exchange contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount of outstanding contracts	199,500,000
Foreign-exchange contracts maturity period	Within one year
Interest Rate Contract
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount of outstanding contracts	3,733,900,000
Notional maturities for interest-rate contracts 2015	1,226,800,000
Notional maturities for interest-rate contracts 2016	1,341,400,000
Notional maturities for interest-rate contracts 2017	633,000,000
Notional maturities for interest-rate contracts 2018	379,900,000
Notional maturities for interest-rate contracts 2019	81,800,000
Notional maturities for interest-rate contracts thereafter	$ 71,000,000