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Assets Held for Sale (Tables)
3 Months Ended
Mar. 31, 2012
Assets Held For Sale Disclosure [Abstract]  
Disclosure of Long Lived Assets Held-for-sale [Table Text Block]
The following table summarizes changes in the balance of assets held for sale during the three months ended March 31, 2012:
 
 
(In millions)
Balance, December 31, 2011
$
9.4

Assets sold
(5.1
)
Impairment
(0.3
)
Balance, March 31, 2012
$
4.0