CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Millions, unless otherwise specified	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings
Balance at Dec. 31, 2011	$ 985.8	$ 80.1	$ 852.0	$ (294.2)	$ 347.9
Balance (in shares) at Dec. 31, 2011		80.1
Net income	149.6	0	0	0	149.6
Other comprehensive (loss) income	(77.1)	0	0	(77.1)	0
Dividends paid:
Common stock ($0.80 per share)	(64.1)	0	0	0	(64.1)
Common stock repurchased and retired (in shares)	(0.2)	(0.2)
Common stock repurchased and retired	(3.1)	(0.2)	(2.9)	0	0
Common stock issued for:
Stock options exercised (in shares)	0.1	0.1
Stock options exercised	1.4	0.1	1.3	0	0
Other Transactions (in shares)		0.2
Other Transactions	2.6	0.2	2.4	0	0
Stock-based compensation	3.3	0	3.3	0	0
Balance at Dec. 31, 2012	998.4	80.2	856.1	(371.3)	433.4
Balance (in shares) at Dec. 31, 2012		80.2
Net income	178.6	0	0	0	178.6
Other comprehensive (loss) income	6.2	0	0	6.2	0
Dividends paid:
Common stock ($0.80 per share)	(64.0)	0	0	0	(64.0)
Common stock repurchased and retired (in shares)	(1.5)	(1.5)
Common stock repurchased and retired	(36.2)	(1.5)	(34.7)	0	0
Common stock issued for:
Stock options exercised (in shares)	0.5	0.5
Stock options exercised	9.7	0.5	9.2	0	0
Other Transactions (in shares)		0.2
Other Transactions	3.2	0.2	3.0	0	0
Stock-based compensation	5.2	0	5.2	0	0
Balance at Dec. 31, 2013	1,101.1	79.4	838.8	(365.1)	548.0
Balance (in shares) at Dec. 31, 2013		79.4
Net income	105.7	0	0	0	105.7
Other comprehensive (loss) income	(78.0)	0	0	(78.0)	0
Dividends paid:
Common stock ($0.80 per share)	(63.0)	0	0	0	(63.0)
Common stock repurchased and retired (in shares)	(2.5)	(2.5)
Common stock repurchased and retired	(64.8)	(2.5)	(62.3)	0	0
Common stock issued for:
Stock options exercised (in shares)	0.5	0.5
Stock options exercised	12.1	0.5	11.6	0	0
Other Transactions (in shares)		0
Other Transactions	(1.4)	0	(1.4)	0	0
Stock-based compensation	1.6	0	1.6	0	0
Balance at Dec. 31, 2014	$ 1,013.3	$ 77.4	$ 788.3	$ (443.1)	$ 590.7
Balance (in shares) at Dec. 31, 2014		77.4