Financial Instruments and Fair Value Measurements - Summary of Gains (Losses) From Change in Fair Value of Derivative Instruments Included in Other Comprehensive Income (Loss) (Parenthetical) (Detail) (Net investment hedges [Member], USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net investment hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Gain (Loss) on settlement of derivatives	$ (4.5)	$ (1.1)	$ (11.4)	$ 4.3