Consolidated Statements of Comprehensive Loss - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net loss	$ (125.2)	$ (194.0)
Net unrealized (losses) gains on derivative financial instruments:
Net holding gains (losses) arising during the period	0.0	(1.4)
Reclassification adjustment for net realized (gains) losses recorded in net loss	0.0	(3.7)
Total net unrealized (losses) gains on derivative financial instruments	0.0	(5.1)
Net pension adjustments, net of tax:
Liability adjustments for defined benefit pension plans	(2.7)	(1.5)
Reclassification of adjustments for defined benefit plans recorded in net loss	3.2	2.0
Total net pension adjustments	0.5	0.5
Net foreign currency translation:
Unrealized foreign currency translation losses	(0.8)	(6.7)
Realized cumulative translation adjustments from disposal of businesses	75.8	0.0
Total net foreign currency translation	75.0	(6.7)
Net current period other comprehensive income (loss)	75.5	(11.3)
Comprehensive loss	$ (49.7)	$ (205.3)