Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 45
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Name:	us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Summary of Significant Accounting Policies (Foreign Currency Exchange) (Details) $ in Millions	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014
Significant Transactions
Net unrealized foreign currency translation losses	$ (1.4)	$ (145.6)
Israel, New Shekels
Significant Transactions
Foreign currency exchange rate	3.8476	3.9051	3.8865
SEK
Significant Transactions
Foreign currency exchange rate		8.4247	7.7737
GBP
Significant Transactions
Foreign currency exchange rate	0.8074	0.6757	0.6426
Euro Member Countries, Euro
Significant Transactions
Foreign currency exchange rate	0.9479	0.9189	0.8245