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
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 11.4	$ 9.1	$ 38.9	$ 30.7
Unrealized foreign currency translation gain (loss)	7.2	6.2	4.8	(0.8)
Net gain from adjustments to pension and other postretirement benefit liabilities			6.6	1.1
Reclassification of amortization of adjustments to pension and other postretirement benefit liabilities recognized in net periodic benefit cost (Note 4)	1.6	1.2	4.9	3.7
SERP settlement charge			0.2	3.5
Curtailment loss				0.3
Unrealized gain (loss) on "available-for-sale" securities			(0.1)	0.1
Income from other comprehensive income items	8.8	7.4	16.4	7.9
Provision for income taxes	0.6	0.4	4.4	3.3
Other comprehensive income	8.2	7.0	12.0	4.6
Comprehensive income	$ 19.6	$ 16.1	$ 50.9	$ 35.3