Components of Changes in Accumulated Other Comprehensive Income (Parenthetical) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013
Statement Of Stockholders Equity [Abstract]
Amounts of gain reclassified to consolidated statement of income	$ 0.2	$ 0.1	$ 0.6	[1],[2]	$ (0.2)	[1],[2]

[1] Amounts classified to cost of sales and selling, general and administrative expenses.

[2] The Company reclassified a gain of $0.2 and $0.1 out of AOCI to the consolidated statement of income during the three months ended September 30, 2014 and 2013, respectively.