Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net (loss) income	$ (621.4)	$ 34.8	$ 192.4
Other comprehensive income (loss), net of tax:
Net gain on interest rate swaps	0	2.9	1.1
Net gain on foreign currency hedge contracts	0	0.1	1.4
Pension, SERP and Retiree medical adjustments, net of tax	84.8	(30.5)	(52.9)
Unrealized foreign exchange gain (loss) on intercompany loan, net of effect	1.2	2.2	0
Foreign currency translation adjustments	4.6	6.3	(0.5)
Total other comprehensive income (loss)	90.6	(19.0)	(50.9)
Total comprehensive (loss) income	(530.8)	15.8	141.5
Interest rate swaps [Member]
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on derivatives arising during period, net of tax effect	0	0	(4.2)
Less: reclassification adjustment for loss realized in net income, net of tax effect	0	2.9	5.3
Foreign currency hedge contracts [Member]
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on derivatives arising during period, net of tax effect	0	0	0.5
Less: reclassification adjustment for loss realized in net income, net of tax effect	0	0.1	0.2
Less: reclassification adjustment for loss realized in net other assets, net of tax effect	$ 0	$ 0	$ 0.7