Discontinued Operations (Tables)

12 Months Ended

Dec. 31, 2011

Discontinued Operations and Disposal Groups [Abstract]

Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures

Revenue, expense and net income for entities and operations included in discontinued operations are summarized as follows:

	For the year ended December 31,
	2011			2010			2009
	(in millions)
Revenues	$	39.6		$	69.2		$	97.5
Operating loss	(33.0		)	(14.5		)	(192.2		)
Other non-operating income, including interest income	0.1			41.6			0.2
Interest expense	—			(0.1		)	(0.2		)
Income (loss) before income taxes	(32.9		)	27.1			(192.3		)
Income tax expense	0.2			(9.7		)	(3.0		)
Income (loss) from discontinued operations	$	(32.7	)	$	17.4		$	(195.3	)

Net assets for entities and operations included in discontinued operations [Table Text Block]

Net assets for entities and operations included in discontinued operations are summarized as follows:

	December 31,
	2011		2010
	(in millions)
Assets:
Property and equipment, net	$	54.4	$	72.1
Other assets, net	19.5		25.0
Total assets	$	73.9	$	97.1
Liabilities:
Total liabilities	$	2.9	$	6.9
Net Assets	$	71.0	$	90.2