Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2014		Dec. 31, 2013
Statement of Financial Position [Abstract]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax	$ (0.1)	$ (0.2)	[1]
Allowance for doubtful accounts	$ 1.4	$ 1.4		$ 2.3
Common stock, par value (usd per share)	$ 1	$ 1		$ 1
Common stock, shares authorized (shares)	90,000,000	90,000,000		90,000,000
Common stock, shares issued (shares)	64,000,000	64,000,000		63,800,000
Treasury stock, shares (shares)	1,300,000	1,300,000		1,000,000

[1] The change in actuarial losses in the three and six months ended June 30, 2014 includes $1.4 million and $2.7 million of actuarial losses that have been included in the computation of net postretirement pension expense for the period.