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Description Of The Business And Summary Of Significant Accounting Policies New Accounting Pronouncements or Changes in Accounting Principle (Narrative) (Details) - New Accounting Pronouncement, Early Adoption, Effect [Member] - USD ($) $ in Millions		3 Months Ended
	Jan. 01, 2018	Mar. 31, 2017
Accounting Standards Update 2016-16 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification		$ 14.1
Accounting Standards Update 2016-02 [Member] | Scenario, Forecast | Maximum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 90.0
Accounting Standards Update 2016-02 [Member] | Scenario, Forecast | Minimum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 70.0

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- Definition

Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements.

+ References

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+ References

No definition available.

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