Accounting Policies and Basis of Presentation - Summary of the Adjustments on the Impacted Financial Statements (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of sales		$ 347.7
Operating (loss) income	$ (23.7)	0.8
Loss on debt extinguishment	0.0	(76.3)
Loss from continuing operations before taxes on income	(34.5)	(85.0)
Provision for taxes on income	1.5	107.7
Loss from continuing operations	(36.0)	(192.7)
Loss from discontinued operations, net of income taxes	$ 0.0	(3.2)
Net loss		$ (195.9)
Basic loss per common share:
Loss from continuing operations (in dollars per share)	$ (0.26)	$ (1.41)
Loss from discontinued operations (in dollars per share)	0.00	(0.02)
Loss per common share (in dollars per share)	(0.26)	(1.43)
Diluted loss per common share:
Loss from continuing operations (in dollars per share)	(0.26)	(1.41)
Loss from discontinued operations (in dollars per share)	0.00	(0.02)
Diluted loss per common share (in dollars per share)	$ (0.26)	$ (1.43)
Impact of change to FIFO
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of sales		$ 2.2
Operating (loss) income		(2.2)
Loss on debt extinguishment		0.0
Loss from continuing operations before taxes on income		(2.2)
Provision for taxes on income		(13.8)
Loss from continuing operations		11.6
Loss from discontinued operations, net of income taxes		0.0
Net loss		$ 11.6
Basic loss per common share:
Loss from continuing operations (in dollars per share)		$ 0.09
Loss from discontinued operations (in dollars per share)		0.00
Loss per common share (in dollars per share)		0.09
Diluted loss per common share:
Loss from continuing operations (in dollars per share)		0.09
Loss from discontinued operations (in dollars per share)		0.00
Diluted loss per common share (in dollars per share)		$ 0.09
As previously presented
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of sales		$ 345.5
Operating (loss) income		3.0
Loss on debt extinguishment		(72.0)
Loss from continuing operations before taxes on income		(78.5)
Provision for taxes on income		122.3
Loss from continuing operations		(200.8)
Loss from discontinued operations, net of income taxes		(3.2)
Net loss		$ (204.0)
Basic loss per common share:
Loss from continuing operations (in dollars per share)		$ (1.47)
Loss from discontinued operations (in dollars per share)		(0.02)
Loss per common share (in dollars per share)		(1.49)
Diluted loss per common share:
Loss from continuing operations (in dollars per share)		(1.47)
Loss from discontinued operations (in dollars per share)		(0.02)
Diluted loss per common share (in dollars per share)		$ (1.49)
Revisions
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of sales		$ 0.0
Operating (loss) income		0.0
Loss on debt extinguishment		(4.3)
Loss from continuing operations before taxes on income		(4.3)
Provision for taxes on income		(0.8)
Loss from continuing operations		(3.5)
Loss from discontinued operations, net of income taxes		0.0
Net loss		$ (3.5)
Basic loss per common share:
Loss from continuing operations (in dollars per share)		$ (0.03)
Loss from discontinued operations (in dollars per share)		0.00
Loss per common share (in dollars per share)		(0.03)
Diluted loss per common share:
Loss from continuing operations (in dollars per share)		(0.03)
Loss from discontinued operations (in dollars per share)		0.00
Diluted loss per common share (in dollars per share)		$ (0.03)