Condensed Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net income (loss)	$ 9.3	$ 3.9	$ (26.6)	$ 21.0
Other comprehensive income, net of tax:
Foreign currency translation gain (loss), net of tax of ($0.1), $0.0, ($0.2), $0.0	0	0.1	(0.1)	0.1
Defined benefit pension and postretirement plans:
Net gain arising from remeasurement during the period, net of tax of $13.1, $17.3	22.7	0	30.0	0
Amortization of prior service benefits, net of tax of ($1.3), ($1.2), ($3.7), ($3.5)	(2.3)	(2.0)	(6.3)	(6.2)
Amortization of net actuarial loss, net of tax of $2.4, $2.2, $7.5, $7.0	4.4	4.2	13.2	12.5
Reclassification adjustment for curtailment gain included in net income, net of tax of ($0.2)	0	0	(0.4)	0
Other comprehensive income	24.8	2.3	36.4	6.4
Total comprehensive income	$ 34.1	$ 6.2	$ 9.8	$ 27.4