Components of Net Periodic Pension Benefit Cost (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended	0 Months Ended
	Sep. 30, 2014 Funded Frozen Pension Plan	Apr. 01, 2014 Unfunded Supplemental Pension Plan	Sep. 30, 2014 Unfunded Supplemental Pension Plan
Defined Benefit Plan Disclosure
Contributions made	$ 4.4
Expected benefit payments in remainder of year			1.6
Reduction of plan expense over the remainder of 2014		0.4
Reduction in the projected benefit obligation		$ 1.2