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Financial Instruments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended |  | 12 Months Ended | 3 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2012 Terminated Interest Rate Swap Hedge | Dec. 31, 2011 Terminated Interest Rate Swap Hedge | Dec. 31, 2012 Forward Rate Contracts | Dec. 31, 2011 Forward Rate Contracts | Dec. 31, 2012 Spain Italy Portugal And Greece | Dec. 31, 2011 Spain Italy Portugal And Greece | Dec. 31, 2010 Spain Italy Portugal And Greece | Jul. 01, 2012 Spanish Government | Sep. 30, 2012 Italian Government
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |
Amount in accumulated other comprehensive income, reclassified as expense to the statement of income | $ 0.4 |  |  |  |  |  |  |  |  |  |
Pre-tax loss on forward exchange contract | 7.6 |  |  |  |  |  |  |  |  |  |
Interest rate swap, notional amount designated as a hedge |  | 350 |  |  |  |  |  |  |  |  |
After-tax loss (gain) reclassified from AOCI into income with respect to interest rate contracts |  |  | 7.0 | 10.0 | (0.7) | (0.4) |  |  |  |  |
Net revenues to customers |  |  |  |  |  |  | 132.5 | 138.4 | 128.1 |  |
Amount collected from past due receivables |  |  |  |  |  |  |  |  |  | $ 17.5 | $ 6.5

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- Definition The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph b -Clause 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4D -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624177-113959 + Details
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