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Organization and Basis of Presentation - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 3 Months Ended
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Mar. 31, 2013 Subsidiary | Dec. 31, 2012 Reporting_Unit
Organization And Basis Of Presentation [Line Items] |  |
Number of wholly-owned subsidiaries | 3 |
Number of global business divisions |  | 3
Non-current deferred tax assets | $ 150.5 | $ 150.3
Non-current deferred tax liabilities | 325.5 | 367.0
Misclassification adjustment of non-current deferred tax assets |  | 105.5
Misclassification adjustment of non-current deferred tax liabilities |  | 105.5
Restatement Adjustment [Member] |  |
Organization And Basis Of Presentation [Line Items] |  |
Non-current deferred tax assets |  | 150.3
Non-current deferred tax liabilities |  | 367.0
Previously Reported [Member] |  |
Organization And Basis Of Presentation [Line Items] |  |
Non-current deferred tax assets |  | 255.8
Non-current deferred tax liabilities |  | $ 472.5

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- Definition Amount after allocation of valuation allowances of noncurrent deferred tax asset attributable to deductible temporary differences and carryforwards. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e31928-109318 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e31917-109318 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e31958-109318 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e31931-109318 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 41, 42, 43 -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. + Details
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