Other Current and Non-Current Assets - Components of Other Current and Non-Current Assets (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Short-term investments	$ 112.9	$ 38.2
Asbestos-related current assets	84.5	82.6
Prepaid income tax	23.6	66.7
Current deferred income taxes	59.5	19.9
Other	65.1	44.0
Other current assets	345.6	251.4
Other employee benefit-related assets	95.5	87.7
Capitalized software costs	14.6	13.4
Environmental related assets	11.7	12.3
Equity method investments	4.7	8.6
Other	18.4	29.2
Other non-current assets	$ 144.9	$ 151.2