XML 69 R54.htm IDEA: XBRL DOCUMENT v3.3.1.900
Employee Benefit Plans (Schedule of Allocation of Plan Assets) (Details)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Pension Benefit Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Allocation of plan assets 100.00% 100.00%
Other Benefits Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Allocation of plan assets 100.00% 100.00%
Equity Securities [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Target plan allocations 55.00% 43.00%
Equity Securities [Member] | Pension Benefit Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Allocation of plan assets 59.10% 60.70%
Equity Securities [Member] | Other Benefits Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Allocation of plan assets 50.00% 49.50%
Debt Securities [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Target plan allocations 38.00% 50.00%
Debt Securities [Member] | Pension Benefit Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Allocation of plan assets 37.80% 35.80%
Debt Securities [Member] | Other Benefits Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Allocation of plan assets 47.40% 47.50%
Cash [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Target plan allocations 2.00% 2.00%
Cash [Member] | Pension Benefit Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Allocation of plan assets 1.30% 1.20%
Cash [Member] | Other Benefits Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Allocation of plan assets 2.40% 2.80%
Commodities [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Target plan allocations 5.00% 5.00%
Commodities [Member] | Pension Benefit Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Allocation of plan assets 1.80% 2.30%
Commodities [Member] | Other Benefits Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Allocation of plan assets 0.20% 0.20%