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Reconciliation Of Changes in Unrecognized Tax Benefits (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Income Tax Contingency [Line Items] |  |  |
Balance at January 1 | $ 35.0 | $ 26.3 | $ 29.2
Additions based on tax positions related to the current year | 3.4 | 14.4 | (2.4)
Changes for tax positions of prior years | (4.0) | (1.4) | (0.1)
Reductions as a result of a lapse of applicable statute of limitations | (3.4) | (1.6) |
Settlements | (0.9) | (0.9) | (0.2)
Changes due to foreign currency | (2.4) | (1.8) | (0.2)
Balance at December 31 | $ 27.7 | $ 35.0 | $ 26.3

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- Definition Unrecognized Tax Benefits, Increases (Decreases) Resulting From Current Period Tax Positions + References No definition available. + Details
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- Definition Unrecognized Tax Benefits, Increases (Decreases) Resulting From Foreign Currency Translation + References No definition available. + Details
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- Definition Unrecognized Tax Benefits, Increases (Decreases) Resulting from Prior Period Tax Positions + References No definition available. + Details
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- Definition Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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