Summary of Notional Amounts and Fair Value of the Company's Cash Flow Hedges (Detail) (Cash Flow Hedging, USD $) In Thousands	Jun. 30, 2011
Interest Rate Swaps
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value Net Asset (Liability)	$ 6,659
Interest Rate Swaps | Current year
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	500,686
Interest Rate Swaps | Current year | Currency, Euros
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	686
Interest Rate Swaps | Current year | Currency, U.S. Dollars
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	500,000
Interest Rate Swaps | One Year from Balance Sheet Date
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	234,795
Interest Rate Swaps | One Year from Balance Sheet Date | Currency, Euros
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	1,371
Interest Rate Swaps | One Year from Balance Sheet Date | Currency, Japanese Yen
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	156,038
Interest Rate Swaps | One Year from Balance Sheet Date | Currency, Swiss Francs
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	77,386
Interest Rate Swaps | More than One and within Two Years from Balance Sheet Date
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	1,371
Interest Rate Swaps | More than One and within Two Years from Balance Sheet Date | Currency, Euros
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	1,371
Interest Rate Swaps | More than Two and within Three Years from Balance Sheet Date
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	1,048
Interest Rate Swaps | More than Two and within Three Years from Balance Sheet Date | Currency, Euros
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	1,048
Interest Rate Swaps | More than Four Years from Balance Sheet Date and Thereafter
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	3,408
Interest Rate Swaps | More than Four Years from Balance Sheet Date and Thereafter | Currency, Euros
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	3,408
Interest Rate Swaps | Currency, Euros
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value Net Asset (Liability)	(524)
Interest Rate Swaps | Currency, Japanese Yen
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value Net Asset (Liability)	(1,340)
Interest Rate Swaps | Currency, Swiss Francs
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value Net Asset (Liability)	(2,027)
Interest Rate Swaps | Currency, U.S. Dollars
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value Net Asset (Liability)	10,550
Commodity Contracts | Current year | Silver Bullion | Swap
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	690
Commodity Contracts | Current year | Platinum Bullion | Swap
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	815
Commodity Contracts | Current year | Swap
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	1,505
Commodity Contracts | One Year from Balance Sheet Date | Silver Bullion | Swap
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	297
Commodity Contracts | One Year from Balance Sheet Date | Platinum Bullion | Swap
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	352
Commodity Contracts | One Year from Balance Sheet Date | Swap
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	649
Commodity Contracts | Silver Bullion | Swap
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value Net Asset (Liability)	44
Commodity Contracts | Platinum Bullion | Swap
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value Net Asset (Liability)	(2)
Commodity Contracts | Swap
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value Net Asset (Liability)	42
Current year | Foreign Exchange Forward Contracts
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	30,077
Current year | Foreign Exchange Forward Contracts | Derivatives Sold | Currency, Australian Dollars
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	3,779
Current year | Foreign Exchange Forward Contracts | Derivatives Sold | Currency, Canadian Dollars
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	18,362
Current year | Foreign Exchange Forward Contracts | Derivatives Sold | Currency, Danish Krone
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	1,022
Current year | Foreign Exchange Forward Contracts | Derivatives Sold | Currency, Japanese Yen
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	11,251
Current year | Foreign Exchange Forward Contracts | Derivatives Sold | Currency, Mexican Pesos
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	11,282
Current year | Foreign Exchange Forward Contracts | Derivatives Sold | Currency, Singapore Dollars
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	1,846
Current year | Foreign Exchange Forward Contracts | Derivatives Sold | Currency, South Korean Won
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	5,471
Current year | Foreign Exchange Forward Contracts | Derivative Purchased | Currency, British Pound Sterling
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	(5,743)
Current year | Foreign Exchange Forward Contracts | Derivative Purchased | Currency, Euros
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	(1,436)
Current year | Foreign Exchange Forward Contracts | Derivative Purchased | Currency, Norwegian Krone
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	(474)
Current year | Foreign Exchange Forward Contracts | Derivative Purchased | Currency, Swiss Francs
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	(14,356)
Current year | Foreign Exchange Forward Contracts | Derivative Purchased | Currency, Taiwanese Dollars
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	(927)
One Year from Balance Sheet Date | Foreign Exchange Forward Contracts
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	11,956
One Year from Balance Sheet Date | Foreign Exchange Forward Contracts | Derivatives Sold | Currency, Australian Dollars
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	3,929
One Year from Balance Sheet Date | Foreign Exchange Forward Contracts | Derivatives Sold | Currency, Canadian Dollars
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	13,505
One Year from Balance Sheet Date | Foreign Exchange Forward Contracts | Derivative Purchased | Currency, British Pound Sterling
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	(5,478)
More than One and within Two Years from Balance Sheet Date | Foreign Exchange Forward Contracts
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	1,430
More than One and within Two Years from Balance Sheet Date | Foreign Exchange Forward Contracts | Derivatives Sold | Currency, Australian Dollars
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	227
More than One and within Two Years from Balance Sheet Date | Foreign Exchange Forward Contracts | Derivatives Sold | Currency, Canadian Dollars
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	1,404
More than One and within Two Years from Balance Sheet Date | Foreign Exchange Forward Contracts | Derivative Purchased | Currency, British Pound Sterling
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional Amount	(201)
Foreign Exchange Forward Contracts
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value Net Asset (Liability)	(262)
Foreign Exchange Forward Contracts | Derivatives Sold | Currency, Australian Dollars
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value Net Asset (Liability)	(435)
Foreign Exchange Forward Contracts | Derivatives Sold | Currency, Canadian Dollars
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value Net Asset (Liability)	(1,088)
Foreign Exchange Forward Contracts | Derivatives Sold | Currency, Danish Krone
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value Net Asset (Liability)	9
Foreign Exchange Forward Contracts | Derivatives Sold | Currency, Japanese Yen
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value Net Asset (Liability)	314
Foreign Exchange Forward Contracts | Derivatives Sold | Currency, Mexican Pesos
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value Net Asset (Liability)	52
Foreign Exchange Forward Contracts | Derivatives Sold | Currency, Singapore Dollars
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value Net Asset (Liability)	45
Foreign Exchange Forward Contracts | Derivatives Sold | Currency, South Korean Won
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value Net Asset (Liability)	77
Foreign Exchange Forward Contracts | Derivative Purchased | Currency, British Pound Sterling
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value Net Asset (Liability)	(284)
Foreign Exchange Forward Contracts | Derivative Purchased | Currency, Euros
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value Net Asset (Liability)	952
Foreign Exchange Forward Contracts | Derivative Purchased | Currency, Norwegian Krone
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value Net Asset (Liability)	(1)
Foreign Exchange Forward Contracts | Derivative Purchased | Currency, Swiss Francs
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value Net Asset (Liability)	103
Foreign Exchange Forward Contracts | Derivative Purchased | Currency, Taiwanese Dollars
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Fair Value Net Asset (Liability)	$ (6)