Components of Net Periodic Pension Benefit Cost (Details 2) (USD $) In Millions, unless otherwise specified	6 Months Ended	0 Months Ended
	Jun. 30, 2014 Funded Frozen Pension Plan [Member]	Apr. 02, 2014 Unfunded Supplemental Pension Plan [Member]	Jun. 30, 2014 Unfunded Supplemental Pension Plan [Member]
Defined Benefit Plan Disclosure
Contributions made	$ 3.1
Planned contributions in remainder of year	1.7
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