Employee Benefit Plans Assumptions Used in Calculations (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Pension Plan, Defined Benefit [Member]
Assumptions Used to Determine Benefit Obligations
Discount rate	4.60%	3.70%	4.20%
Rate of compensation increase	4.60%	4.60%	4.50%
Discount rate methodology	closely approximates interest rates on high quality, long-term obligations
Assumptions Used to Determine Net Periodic Benefit Cost
Discount rate	3.70%	4.20%	5.25%
Expected long-term return on plan assets	8.50%	8.50%	8.50%
Rate of compensation increase	4.60%	4.50%	4.50%
Return on plan assets methodology	based on historical and expected long-term rates of return on broad equity and bond indices and consideration of the actual annualized rate of return
Other Postretirement Benefit Plan, Defined Benefit [Member]
Assumptions Used to Determine Benefit Obligations
Discount rate	4.60%	3.60%	4.10%
Rate of compensation increase	4.50%	4.50%	4.50%
Assumptions Used to Determine Net Periodic Benefit Cost
Discount rate	3.60%	4.10%	5.10%
Expected long-term return on plan assets	0.00%	0.00%	0.00%
Rate of compensation increase	4.50%	4.50%	4.50%