Consolidated Balance Sheets (Parenthetical) (USD $) In Millions	Jun. 30, 2011		Dec. 31, 2010
Assets
Property, plant and equipment of TRIP Holdings	$ 1,273.8	[1]	$ 1,282.1
Accumulated depreciation on property, plant and equipment of TRIP Holdings	107.2	[1]	90.3
Restricted cash of TRIP Holdings	44.7	[1]	46.0
Debt:
Debt unamortized discount	$ 105.6	[1]	$ 111.1
Stockholders' equity:
Preferred stock, shares authorized	1.5	[1]	1.5
Preferred stock, shares unissued	1.5	[1]	1.5
Common stock, shares authorized	200.0	[1]	200.0

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