Consolidated Statements of Comprehensive Loss (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Net loss	$ (44.4)	[1]	$ (340.7)	[1]	$ (46.7)
Net unrealized (losses) gains on derivative financial instruments:
Net holding gains arising during the period	7.0		3.1		0.2
Reclassification adjustment for net realized (gains) losses included in net loss	(7.3)		(2.0)		0.6
Total net unrealized (losses) gains on derivative financial instruments	(0.3)		1.1		0.8
Net pension adjustments:
Liability adjustments for defined benefit pension plans	10.7		(4.9)		(16.7)
Reclassification of adjustments for defined benefit plans recorded in net loss	5.5		3.9		4.0
Total net Pension adjustments	16.2		(1.0)		(12.7)
Unrealized foreign currency translation losses	(4.5)		(1.7)		0
Total other comprehensive income (loss), net of tax	11.4		(1.6)		(11.9)
Comprehensive loss	$ (33.0)		$ (342.3)		$ (58.6)

[1] The sum of the quarterly loss per share may not equal the annual loss per share due to changes in average shares outstanding.