Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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

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The number of interest rate swap contracts entered into during the period after a debt issuance.

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No definition available.

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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

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-Topic 835
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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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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.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 4C
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Derivatives - Fair Value Hedges (Details) € in Millions, $ in Millions	1 Months Ended	12 Months Ended
	Aug. 31, 2015 USD ($) DerivativeInstrument	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Jun. 30, 2014 USD ($)	Nov. 30, 2013 EUR (€)
Derivatives in Fair Value Hedging Relationships
Number Of Interest Rate Swap Contracts Entered In Period \| DerivativeInstrument	2
Eurobond Due 2021
Derivatives in Fair Value Hedging Relationships
Face amount \| €						€ 600
Fixed rate medium term note due 2019
Derivatives in Fair Value Hedging Relationships
Face amount		$ 25.0			$ 625.0
Fixed rate medium term note due 2020
Derivatives in Fair Value Hedging Relationships
Face amount		200.0
August 2015 medium term notes issued
Derivatives in Fair Value Hedging Relationships
Face amount	$ 1,500.0
June 2014 medium term notes issued
Derivatives in Fair Value Hedging Relationships
Face amount					950.0
Interest rate swap contracts \| Fixed rate medium term note due 2018
Derivatives in Fair Value Hedging Relationships
Derivative notional amount	450.0
Interest rate swap contracts \| Fixed rate medium term note due 2020
Derivatives in Fair Value Hedging Relationships
Derivative notional amount	$ 300.0
Fair value hedges
Derivatives in Fair Value Hedging Relationships
Gain (Loss) on Derivative Recognized in income		(9.0)	$ (2.0)	$ (2.0)
Gain (Loss) on Hedged Item Recognized in Income		9.0	2.0	2.0
Fair value hedges \| Interest rate swap contracts
Derivatives in Fair Value Hedging Relationships
Number Of Interest Rate Swap Contracts Entered In Period \| DerivativeInstrument	2
Fair value hedges \| Interest rate swap contracts \| Eurobond Due 2021
Derivatives in Fair Value Hedging Relationships
Derivative notional amount \| €						€ 300
Fair value hedges \| Interest rate swap contracts \| Fixed rate medium term note due 2019
Derivatives in Fair Value Hedging Relationships
Derivative notional amount					$ 600.0
Fair value hedges \| Interest rate swap contracts \| Fixed rate medium term note due 2018
Derivatives in Fair Value Hedging Relationships
Term of debt instrument	3 years
Derivative notional amount	$ 450.0
Fair value hedges \| Interest rate swap contracts \| Fixed rate medium term note due 2020
Derivatives in Fair Value Hedging Relationships
Term of debt instrument	5 years
Derivative notional amount	$ 300.0	200.0
Fair value hedges \| Interest rate swap contracts \| Interest expense
Derivatives in Fair Value Hedging Relationships
Gain (Loss) on Derivative Recognized in income		(9.0)	(2.0)	(2.0)
Gain (Loss) on Hedged Item Recognized in Income		$ 9.0	$ 2.0	$ 2.0