Benefit Plans Actuarial Calculation Assumptions (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost, discount rate	3.92%	4.34%	5.48%
Net periodic benefit cost, expected return on plan assets	7.00%	7.00%	7.00%
Net periodic benefit cost, rate of compensation increase	4.00%	4.00%	4.00%
Benefit obligations, discount rate	4.82%	3.92%
Benefit obligations, rate of compensation increase	4.00%	4.00%
Other Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost, discount rate	3.80%	4.25%	5.40%
Net periodic benefit cost, expected return on plan assets	7.00%	7.00%	7.00%
Benefit obligations, discount rate	4.70%	3.80%