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Derivatives - Schedule of Pretax Effects of Derivative Financial Instruments Designated or Previously Designated as Effective Hedges (Detail) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Dec. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain/(Loss) Recognized in OCI (effective portion) | $ (8.7) | $ (15.4)
Gain/(Loss) Reclassified from AOCI to Income | (13.1) | (0.3)
Interest Rate Swaps [Member] | Interest Expense, Net [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain/(Loss) Reclassified from AOCI to Income | (1.9) | (2.0)
Foreign Currency Contracts [Member] | Sales and Cost of Sales [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain/(Loss) Recognized in OCI (effective portion) | (5.3) | (11.8)
Gain/(Loss) Reclassified from AOCI to Income | (6.4) | 8.6
Cross-currency Swaps [Member] | Other Income (Expense), Net [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain/(Loss) Recognized in OCI (effective portion) | (3.4) | (3.6)
Gain/(Loss) Reclassified from AOCI to Income | $ (4.8) | $ (6.9)

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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 Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 Reference 2: 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=84234895&loc=SL5624177-113959 + Details
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- Definition The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
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