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Derivatives (Narrative) (Details) - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
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Interest Rate Swap [Member] |  |  |
Derivative, Notional Amount | $ 596.0 |  |
Cross Currency Interest Rate Swap [Member] |  |  |
Derivative, Notional Amount | 173.7 |  |
Foreign Exchange Contract [Member] |  |  |
Derivative, Notional Amount | $ 419.0 |  |
4.70% senior notes due 2020 [Member] |  |  |
Debt Instrument, Face Amount |  |  | $ 550.0
Debt Instrument, Interest Rate, Stated Percentage | 4.70% |  | 4.70%
4.70% senior notes due 2020 [Member] | Interest Rate Swap [Member] |  |  |
Debt Instrument, Face Amount | $ 346.0 |  |
4.00% Senior Notes Due 2024 [Member] |  |  |
Debt Instrument, Face Amount | $ 500.0 |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.00% | 4.00% |
4.00% Senior Notes Due 2024 [Member] | Interest Rate Swap [Member] |  |  |
Debt Instrument, Face Amount | $ 250.0 |  |
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] |  |  |
Derivative, Notional Amount | 1,400.0 |  |
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] |  |  |
Derivative, Notional Amount | $ 0.7 |  |

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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