Derivative Instruments And Hedging Activities (Narrative) (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Notional value of foreign exchange contracts			$ 216.0
Net cash outflow/inflow from settlement of derivative contracts	$ 0.2	$ (7.1)
Derivatives Assets	0.2		0.0
Derivatives Liabilities	0.2		$ 2.5
Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional value of foreign exchange contracts	$ 42.0