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(Derivatives Pretax Amounts Affecting Income and Other Comprehensive Income) (Details) - USD ($) $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2018 | Sep. 30, 2017
Derivatives in Cash Flow Hedging Relationships |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (Loss) Reclassified into Income from Accumulated OCI (Effective Portion) | $ (13.7) | $ (5.0)
Gain (Loss) Recognized in Accumulated OCI (Effective Portion) | 42.9 | (70.1)
Net Investment Hedging Relationships |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (Loss) Reclassified into Income from Accumulated OCI (Effective Portion) | 0.0 | 8.6
Gain (Loss) Recognized in Accumulated OCI (Effective Portion) | 505.8 | (1,393.5)
Gain (Loss) Recognized in Income on Derivative (Amount Excluded from Effectiveness Testing and Ineffective Portion) | 1.6 | 0.0
Derivatives Not Designated as Hedging Instruments |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (Loss) Recognized in Income on Derivative (Amount Excluded from Effectiveness Testing and Ineffective Portion) | 34.7 | 40.3
Foreign Exchange [Member] | Derivatives in Cash Flow Hedging Relationships |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (Loss) Reclassified into Income from Accumulated OCI (Effective Portion) | (12.9) | (4.6)
Gain (Loss) Recognized in Accumulated OCI (Effective Portion) | 42.9 | (70.1)
Foreign Exchange Forward [Member] | Net Investment Hedging Relationships |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (Loss) Reclassified into Income from Accumulated OCI (Effective Portion) | 0.0 | 8.6
Gain (Loss) Recognized in Accumulated OCI (Effective Portion) | 4.2 | (17.4)
Cross Currency Interest Rate Contract [Member] | Net Investment Hedging Relationships |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (Loss) Recognized in Income on Derivative (Amount Excluded from Effectiveness Testing and Ineffective Portion) | 1.6 | 0.0
Interest Rate Contract [Member] | Derivatives in Cash Flow Hedging Relationships |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (Loss) Reclassified into Income from Accumulated OCI (Effective Portion) | (0.8) | (0.4)
Gain (Loss) Recognized in Accumulated OCI (Effective Portion) | 0.0 | 0.0
Other Foreign Currency Denominated Debt [Member] | Net Investment Hedging Relationships |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (Loss) Reclassified into Income from Accumulated OCI (Effective Portion) | 0.0 | 0.0
Gain (Loss) Recognized in Accumulated OCI (Effective Portion) | 501.6 | (1,376.1)
Nonoperating Income (Expense) [Member] | Foreign Exchange [Member] | Derivatives Not Designated as Hedging Instruments |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative instruments, gain (loss) recognized in income, net | 17.4 | (23.7)
Selling, General and Administrative Expenses [Member] | Equity [Member] | Derivatives Not Designated as Hedging Instruments |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative instruments, gain (loss) recognized in income, net | $ 17.3 | $ 64.0

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
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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 portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness. + 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 (d) -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 25 -Section 50 -Paragraph 1 -Subparagraph (a)(1),(2) -URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986 + Details
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