Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Assets, Current [Abstract]
Restricted cash	$ 40.6	$ 0
Accounts receivable — related parties	8.5	11.4
Loans — related parties	$ 0	$ 4.1
Stockholders' Equity Attributable to Parent [Abstract]
Common stock, shares issued	94,807,377	82,592,607
Common stock, shares outstanding	94,807,377	82,592,607
Cumulative Preferred Stock Subject to Mandatory Redemption [Member]
Stockholders' Equity Attributable to Parent [Abstract]
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, liquidation preference per share	$ 1,000	$ 1,000