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Goodwill - Purchase Price and Fair Values of Assets Acquired and Liabilities Assumed (Detail) (USD $) In Millions, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Goodwill | $ 187.9 | $ 149.0 | $ 141.5
Bachman Group Companies [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Other intangible assets | 25.9 |  |
Goodwill | 22.9 |  |
Deferred tax on intangibles | (7.6) |  |
Other net assets acquired | 17.6 |  |
Purchase price, net of cash acquired | 58.8 |  |
Chemsil & Chemtec [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Other intangible assets | 34.0 |  |
Goodwill | 16.7 |  |
Other net assets acquired | 6.7 |  |
Purchase price, net of cash acquired | $ 57.4 |  |

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- Definition Amount of deferred tax asset attributable to deductible temporary differences and carryforwards that are expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
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- Definition Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
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