Other Intangible Assets (Narrative) (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Intangible Assets Net Excluding Goodwill [Abstract]
Amortization expense	$ 2.3	$ 5.3	$ 7.1	$ 10.4