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Investment in Unconsolidated Affiliates Summarized Balance Sheet Information of Equity Method Investment (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013
Summarized Balance Sheet Information of Equity Method Investment [Abstract]
Current assets	$ 427.5
Non-current assets	10,537.1
Current liabilities	622.1
Non-current liabilities	$ 2,140.4

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

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.