Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net loss	$ (152.3)	$ (61.4)	$ (184.1)	$ (100.3)
Net unrealized gains (losses) on derivative financial instruments:
Net holding gains (losses) arising during the period	(2.2)	2.2	0.9	0.7
Reclassification adjustment for net realized gains recorded in net loss	(3.1)	(0.7)	(6.7)	(1.2)
Total net unrealized gains (losses) on derivative financial instruments	(5.3)	1.5	(5.8)	(0.5)
Net pension adjustments:
Liability adjustments for defined benefit plans	(4.4)	(1.6)	(4.4)	(0.8)
Reclassification adjustment for defined benefit plans recorded in net loss	1.5	0.4	1.8	1.1
Total net pension adjustments	(2.9)	(1.2)	(2.6)	0.3
Unrealized foreign currency translation gains (losses)	(3.1)	(8.5)	(6.6)	(9.7)
Total other comprehensive income (loss), net of tax	(11.3)	(8.2)	(15.0)	(9.9)
Comprehensive loss	$ (163.6)	$ (69.6)	$ (199.1)	$ (110.2)