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Investment in Unconsolidated Affiliates Summarized Balance Sheet Information of Equity Method Investment (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Summarized Balance Sheet Information of Equity Method Investment [Abstract]
Current assets	$ 427.0	$ 438.0
Non-current assets	10,774.0	11,399.0
Current liabilities	804.0	671.0
Non-current liabilities	$ 2,786.0	$ 2,344.0

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.