Financial Instruments and Fair Value Measurements - Summary of Gains (Losses) From the Change in Fair Value of Derivative Instruments Included in Other Comprehensive Income (Loss) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total derivatives	$ (23,551)	$ 47,235
Derivative net investment hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total derivatives	(16,914)	34,724
Non-derivative net investment hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total derivatives	(5,530)
Interest rate swap hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total derivatives	$ (1,107)	$ 12,511