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Equity Investments (Summary Of Investment In Joint Venture, Balance Sheet Data) (Details) - WAVE [Member] - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]
Current assets	$ 118.7	$ 120.2
Non-current assets	52.1	40.5
Current liabilities	23.3	26.3
Other non-current liabilities	$ 248.9	$ 243.4

The amount of current liabilities reported by an equity method investment of the entity.

The amount of noncurrent assets reported by an equity method investment of the entity.

The amount of noncurrent liabilities reported by an equity method investment of the entity.