Fair Value Measurement (Tables)

9 Months Ended

Sep. 30, 2012

Assets Measured at Fair Value on a Nonrecurring Basis

Assets measured at fair value on a nonrecurring basis subsequent to initial recognition during the three and nine months ended September 30, 2012 and 2011 are summarized below:

	Three Months Ended September 30, 2012			Nine Months Ended September 30, 2012				As of September 30, 2012
	Impairment charge	Fair value measurement (Level 3)		Impairment charge		Fair value measurement (Level 3)		Net book value
Long-lived assets held and used	$       0.6	$	1.2	$	5.2	$	4.6	$	3.9
Long-lived assets held for sale or disposal	0.9		—		14.9		5.4		5.4
Total	$       1.5	$	1.2	$	20.1	$	10.0	$	9.3

	Three Months Ended September 30, 2011				Nine Months Ended September 30, 2011				As of September 30, 2011
	Impairment charge		Fair value measurement (Level 3)		Impairment charge		Fair value measurement (Level 3)		Net book value
Long-lived assets held and used	$	12.1	$	3.4	$	15.7	$	71.9	$	66.5
Long-lived assets held for sale or disposal		12.4		2.3		27.3		3.6		3.4
Total	$	24.5	$	5.7	$	43.0	$	75.5	$	69.9