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Financial Instruments - Pretax Amounts Related to Derivative Contracts that were Recognized in and Reclassified from Accumulated Other Comprehensive Income (Loss) (Detail) - Designated as hedging instrument - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Derivative [Line Items] |  |  |
Other comprehensive income (loss), net investment hedge and cash flow hedge, gain (loss) before reclassification and tax | $ 68.8 | $ 35.8 | $ 28.8
(Gains) losses reclassified from accumulated other comprehensive loss to | (47.7) | (19.3) | 9.5
Comprehensive income | 21.1 | 16.5 | 38.3
Cash flow hedging | Net sales |  |  |
Derivative [Line Items] |  |  |
(Gains) losses reclassified from accumulated other comprehensive loss to | 3.8 | 2.3 | 2.1
Cash flow hedging | Cost of sales |  |  |
Derivative [Line Items] |  |  |
(Gains) losses reclassified from accumulated other comprehensive loss to | (52.6) | (21.6) | 7.4
Cash flow hedging | Foreign currency contracts |  |  |
Derivative [Line Items] |  |  |
Gains (losses) recognized in accumulated other comprehensive loss | 82.4 | 50.5 | 28.8
Cash flow hedging | Interest rate swap contracts |  |  |
Derivative [Line Items] |  |  |
Gains (losses) recognized in accumulated other comprehensive loss | (9.2) | (14.7) | 0.0
Net investment hedging |  |  |
Derivative [Line Items] |  |  |
Gains (losses) recognized in accumulated other comprehensive loss | (4.4) | 0.0 | 0.0
Net investment hedging | Interest expense |  |  |
Derivative [Line Items] |  |  |
(Gains) losses reclassified from accumulated other comprehensive loss to | $ 1.1 | $ 0.0 | $ 0.0

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- Definition Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109974929&loc=SL110061190-113977 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e637-108580 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580 + Details
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