Goodwill, Intangible and Other Assets (Details 1) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Summary of identifiable intangible and other assets subject to amortization
Gross Amount	$ 71.7	$ 37.3
Accumulated Amortization	(38.4)	(30.1)
Net Amount	33.3	7.2
Deferred Financing Costs [Member]
Summary of identifiable intangible and other assets subject to amortization
Gross Amount	11.5	9.2
Accumulated Amortization	(7.2)	(6.3)
Net Amount	4.3	2.9
Customer Relationships [Member]
Summary of identifiable intangible and other assets subject to amortization
Gross Amount	47.6	4.5
Accumulated Amortization	(20.4)	(1.5)
Net Amount	27.2	3.0
Other [Member]
Summary of identifiable intangible and other assets subject to amortization
Gross Amount	12.6	23.6
Accumulated Amortization	(10.8)	(22.3)
Net Amount	$ 1.8	$ 1.3