Cumulative Amount of Unrecognized Hedge Losses Recorded in Accumulated Other Comprehensive Income (Detail) (Net Investment Hedging [Member], Foreign Exchange Contract [Member], USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Net Investment Hedging [Member] | Foreign Exchange Contract [Member]
Hedge Underlying Gain Loss [Line Items]
Cumulative amount of unrecognized hedge losses recorded in AOCI	$ (0.6)	$ 1.5