Fair Value Measurements

6 Months Ended

Jun. 30, 2012

Fair Value Measurements

Fair Value Measurements

Note 7— Fair Value Measurements

We have categorized our assets and liabilities recorded at fair value based upon the fair value hierarchy. The levels of fair value hierarchy are as follows:

·Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that we have the ability to access.

·Level 2 inputs utilize other-than-quoted prices that are observable, either directly or indirectly. Level 2 inputs include quoted prices for similar assets and liabilities in active markets, and inputs such as interest rates and yield curves that are observable at commonly quoted intervals.

·Level 3 inputs are unobservable and are typically based on our own assumptions, including situations where there is little, if any, market activity.

In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, we categorize such assets or liabilities based on the lowest level input that is significant to the fair value measurement in its entirety. Our assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset.

Both observable and unobservable inputs may be used to determine the fair value of positions that are classified within the Level 3 category. As a result, the unrealized gains and losses for assets within the Level 3 category presented below may include changes in fair value that were attributable to both observable (e.g., changes in market interest rates) and unobservable (e.g., changes in historical company data) inputs.

The major categories of assets and liabilities measured on a recurring basis, at fair value, as of June 30, 2012 and December 31, 2011, are as follows (in millions):

	June 30, 2012
	Level 1		Level 2		Level 3		Total
Treasury bills	$	117.1	$	83.8	$	—	$	200.9
FDIC insured corporate bonds	61.0		—		—		61.0
Government Agency Securities	43.7		106.3		—		150.0
Total	$	221.8	$	190.1	$	—	$	411.9

	December 31, 2011
	Level 1		Level 2		Level 3		Total
Treasury bills	$	70.2	$	20.0	$	—	$	90.2
FDIC insured corporate bonds	114.8		—		—		114.8
Government Agency Securities	88.6		81.2		—		169.8
Money market instruments	—		0.2		—		0.2
Total	$	273.6	$	101.4	$	—	$	375.0

Government agency securities and treasury bills that are classified as cash equivalents are carried at cost, which approximates market value. Accordingly, no gains or losses (realized/unrealized) have been incurred for cash equivalents. All investments classified as available-for-sale contain quoted prices in active markets.

The major categories of assets and liabilities measured on a nonrecurring basis, at fair value, as of June 30, 2012 and December 31, 2011, are as follows (in millions):

	June 30, 2012
	Level 1		Level 2		Level 3		Total
Property,plant and equipment, net	$	—	$	—	$	97.1	$	97.1
Goodwill	—		—		55.8		55.8
Intangible assets, net	—		—		23.5		23.5
Total	$	—	$	—	$	176.4	$	176.4

	December 31, 2011
	Level 1		Level 2		Level 3		Total
Property,plant and equipment, net	$	—	$	—	$	86.1	$	86.1
Goodwill	—		—		55.8		55.8
Intangible assets, net	—		—		25.9		25.9
Total	$	—	$	—	$	167.8	$	167.8