Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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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The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

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Commitments And Contingencies (Narrative) (Details) - USD ($) $ in Millions		12 Months Ended
	Dec. 31, 2017	Sep. 30, 2018	Apr. 01, 2018
East China JV [Member]
Other Commitments [Line Items]
Equity Method Investment, Ownership Percentage	50.00%
Payments to Acquire Interest in Joint Venture	$ 1,440.8
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value	$ 1,440.8	$ 1,400.0
Taiwan JV [Member]
Other Commitments [Line Items]
Equity Method Investment, Ownership Percentage			50.00%