Other Assets (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Equity method investment for JHJ International Transportation Co., Ltd.	$ 23.2us-gaap_EquityMethodInvestments	$ 23.4us-gaap_EquityMethodInvestments
Deferred debt costs	26.5	18.5
Other	47.5us-gaap_OtherAssetsMiscellaneous	36.6us-gaap_OtherAssetsMiscellaneous
Other assets	97.2us-gaap_OtherAssetsNoncurrent	78.5us-gaap_OtherAssetsNoncurrent
Equity investment impairment	0	0	30.8
JHJ international Transportation Co. [Member]
Dividends received	1.9	1.8
Ownership interest percentage	50.00%
Equity investment impairment		30.8
Excess of investment over interest in equity	$ 4.8

Net amount of long-term deferred finance costs capitalized at the end of the reporting period.

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