Fair Value Measurements (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2016

Dec. 31, 2015

Fair Value Disclosures [Abstract]

Fair value assets and liabilities measured on a recurring basis

Assets and liabilities measured at fair value on a recurring basis are presented below:

	March 31, 2016								December 31, 2015
	Level 1		Level 2			Total			Level 1		Level 2			Total
Assets measured at fair value
Cash and cash equivalents	$	113.0	$	—		$	113.0		$	56.6	$	—		$	56.6
Other current assets:
Foreign exchange contracts	—		—			—			—		1.1			1.1
Commodity hedge contracts	—		1.6			1.6			—		0.5			0.5
Other non-current assets:
Commodity hedge contracts	—		0.4			0.4			—		0.3			0.3
Assets measured at fair value	$	113.0	$	2.0		$	115.0		$	56.6	$	1.9		$	58.5
Liabilities measured at fair value
Accrued liabilities:
Foreign exchange contracts	$	—	$	(0.7	)	$	(0.7	)	$	—	$	—		$	—
Commodity hedge contracts	—		(34.5		)	(34.5		)	—		(41.2		)	(41.2		)
Other non-current liabilities—commodity hedge contracts	—		(6.4		)	(6.4		)	—		(9.5		)	(9.5		)
Liabilities measured at fair value	$	—	$	(41.6	)	$	(41.6	)	$	—	$	(50.7	)	$	(50.7	)
Liabilities measured at other than fair value
Long-term debt, including current portions:
Fair value	$	—	$	(1,857.0	)	$	(1,857.0	)	$	—	$	(1,573.3	)	$	(1,573.3	)
Carrying amount	—		(2,336.4		)	(2,336.4		)	—		(2,354.1		)	(2,354.1		)

Assets and liabilities measured at fair value on a recurring basis are presented below:

	2015								2014
	Level 1		Level 2			Total			Level 1		Level 2			Total
Assets measured at fair value
Cash and cash equivalents	$	56.6	$	—		$	56.6		$	70.2	$	—		$	70.2
Other current assets:
Foreign exchange contracts	—		1.1			1.1			—		1.2			1.2
Commodity hedge contracts	—		0.5			0.5			—		3.6			3.6
Other non-current assets:
Available for sale investments—cash and cash equivalents	—		—			—			3.3		—			3.3
Commodity hedge contracts	—		0.3			0.3			—		1.8			1.8
Assets measured at fair value	$	56.6	$	1.9		$	58.5		$	73.5	$	6.6		$	80.1
Liabilities measured at fair value
Accrued liabilities:
Commodity hedge contracts	$	—	$	(41.2	)	$	(41.2	)	$	—	$	(36.2	)	$	(36.2	)
Other non-current liabilities—commodity hedge contracts	—		(9.5		)	(9.5		)	—		(5.7		)	(5.7		)
Liabilities measured at fair value	$	—	$	(50.7	)	$	(50.7	)	$	—	$	(41.9	)	$	(41.9	)
Liabilities measured at other than fair value
Long-term debt, including current portions:
Fair value	$	—	$	(1,573.3	)	$	(1,573.3	)	$	—	$	(2,478.3	)	$	(2,478.3	)
Carrying amount	—		(2,354.1		)	(2,354.1		)	—		(2,422.0		)	(2,422.0		)