Financial Instruments and Fair Value Measurements - Additional Information (Detail)	12 Months Ended			12 Months Ended
	Dec. 31, 2012 USD ($) Contract	Dec. 31, 2011 USD ($)	Dec. 31, 2012 Interest Rate Swap [Member] USD ($)	Dec. 31, 2012 Foreign Currency Forward Contracts [Member] USD ($) Contract	Dec. 31, 2012 Foreign Currency Forward Contracts [Member] EUR (€)	Dec. 31, 2012 Euro [Member] Contract	Dec. 31, 2012 British pound sterling [Member] Contract	Dec. 31, 2012 Japanese yen [Member] Contract	Dec. 31, 2012 U.S. Dollar [Member] Contract
Derivative [Line Items]
Number of foreign currency forward contracts				11	11
Foreign currency forward contracts maturity dates				April and May 2013	April and May 2013
Aggregate notional amount				$ 1,300,000,000	€ 1,000,000,000
Derivative forward exchange rate				1.30	1.30
Accounts Payable and Accrued Expenses	611,770,000	639,490,000		17,500,000
Accumulated other comprehensive income (loss)	33,800,000	51,700,000		17,500,000
Maximum length of time hedged in Cash Flow Hedge	10 years
Number of interest rate swap contracts	32					24	2	5	1
Unsettled derivative contract included in accounts payable and accrued expenses	28,000,000	28,500,000
Interest expense reclassified	14,700,000
Estimate of additional interest expense reclassified	1,500,000
Recorded for ineffectiveness	2,400,000	1,800,000
Gain (loss) on early extinguishment of debt	11,000,000
Notional amount of interest rate swap contracts	$ 445,400,000,000	$ 1,300,000,000	$ 703,800,000