Financial Instruments and Fair Value Measurements - Additional Information (Detail)	3 Months Ended				12 Months Ended
	Mar. 31, 2014 USD ($)	Mar. 31, 2013 USD ($)	Mar. 31, 2013 Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] USD ($)	Mar. 31, 2014 Foreign Currency Forward Contracts [Member] USD ($)	Dec. 31, 2013 Foreign Currency Forward Contracts [Member] USD ($)	Mar. 31, 2014 Foreign Currency Forward Contracts [Member] EUR (€)	Feb. 28, 2014 Foreign Currency Forward Contracts [Member] USD ($)	Feb. 28, 2014 Foreign Currency Forward Contracts [Member] EUR (€)	Dec. 31, 2013 Foreign Currency Forward Contracts [Member] EUR (€)
Derivative [Line Items]
Debt issued	$ 8,842,000,000			$ 1,900,000,000	$ 1,000,000,000	€ 1,400,000,000	$ 959,400,000	€ 700,000,000	€ 700,000,000
Amount of loss included in AOCI	(4,723,000)	(286,254,000)		20,400,000	14,900,000
Interest expense reclassified	$ 85,523,000	$ 114,641,000	$ 2,300,000