Employee Retirement Plans and Postretirement Benefits Target And Actual Allocations (Details)	12 Months Ended
	Dec. 31, 2013
Equity funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target allocations (as a percent)	31.80%
Actual allocations (as a percent)	34.40%
Fixed Income Funds [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target allocations (as a percent)	48.70%
Actual allocations (as a percent)	45.80%
Hedge funds of funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target allocations (as a percent)	9.90%
Actual allocations (as a percent)	9.40%
Real estate funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target allocations (as a percent)	4.30%
Actual allocations (as a percent)	6.30%
Other assets
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target allocations (as a percent)	5.30%
Actual allocations (as a percent)	4.10%