Fair Value (Tables)

3 Months Ended

Mar. 31, 2016

Fair Value Measurements, Nonrecurring [Table Text Block]

The following table presents those assets measured at fair value on a nonrecurring basis for the three months ended March 31, 2016 using Level 3 inputs:



	Carrying Value		Fair Value Adjustment			Fair Value
Long-lived assets held for sale:
Land	$	0.2	$	(0.2	)	$	—
Total long-lived assets held for sale	$	0.2	$	(0.2	)	$	—

Long-lived assets held and used:
Altavista bearing plant	$	5.7	$	(2.4	)	$	3.3
Total long-lived assets held and used	$	5.7	$	(2.4	)	$	3.3

The following table presents those assets measured at fair value on a nonrecurring basis for the three months ended March 31, 2015 using Level 3 inputs:



	Carrying Value		Fair Value Adjustment			Fair Value
Long-lived assets held for sale:
Repair business	$	5.2	$	(2.5	)	$	2.7
Total long-lived assets held for sale	$	5.2	$	(2.5	)	$	2.7

Long-lived assets held and used:
Fixed assets	$	0.7	$	(0.2	)	$	0.5
Total long-lived assets held and used	$	0.7	$	(0.2	)	$	0.5

Assets and liabilities measured at fair value on a recurring basis

The following tables present the fair value hierarchy for those financial assets and liabilities measured at fair value on a recurring basis as of March 31, 2016 and December 31, 2015:



	March 31, 2016
	Total		Level 1		Level 2		Level 3
Assets:
Cash and cash equivalents	$	123.9	$	123.9	$	—	$	—
Cash and cash equivalents measured at net asset value	13.4
Restricted cash	0.2		0.2		—		—
Short-term investments	9.8		—		9.8		—
Short-term investments measured at net asset value	0.5
Foreign currency hedges	3.1		—		3.1		—
Total Assets	$	150.9	$	124.1	$	12.9	$	—
Liabilities:
Foreign currency hedges	$	3.9	$	—	$	3.9	$	—
Total Liabilities	$	3.9	$	—	$	3.9	$	—



	December 31, 2015
	Total		Level 1		Level 2		Level 3
Assets:
Cash and cash equivalents	$	110.2	$	110.2	$	—	$	—
Cash and cash equivalents measured net asset value	19.4
Restricted cash	0.2		0.2		—		—
Short-term investments	8.9		—		8.9		—
Short-term investments measured at net asset value	0.8
Foreign currency hedges	8.2		—		8.2		—
Total Assets	$	147.7	$	110.4	$	17.1	$	—
Liabilities:
Foreign currency hedges	$	0.4	$	—	$	0.4	$	—
Total Liabilities	$	0.4	$	—	$	0.4	$	—