Basis of Presentation And Summary Of Significant Accounting Policies (Narrative) (Details) $ in Millions	Jan. 01, 2019 USD ($)
Significant Accounting Policies [Line Items]
Reclassification from AOCI to retained earnings	$ 2.8
ASU 2016-02 [Member]
Significant Accounting Policies [Line Items]
Cumulative-effect adjustment on assets	22.7
Cumulative-effect adjustment on liabilities	$ 23.4

Amount of cumulative effect of the change in accounting principle or new accounting pronouncement on retained earnings or other components of equity or net assets in the statement of financial position as of the beginning of the earliest period presented.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(3)
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22580-107794

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