XML 131 R111.htm IDEA: XBRL DOCUMENT v3.3.1.900
Pension and Other Postretirement Benefit Plans - Plan Asset Allocations (Details) - shares
shares in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Pension [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]    
Actual Plan Asset Allocation 100.00% 100.00%
Employer Stock Included in Equity Securities (Shares) 0.0 0.0
Plan Asset Target Allocation 100.00%  
Pension [Member] | Equity Securities [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]    
Actual Plan Asset Allocation 47.00% 48.00%
Plan Asset Target Allocation 56.00%  
Pension [Member] | Debt Securities [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]    
Actual Plan Asset Allocation 39.00% 39.00%
Plan Asset Target Allocation 35.00%  
Pension [Member] | Private Equity [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]    
Actual Plan Asset Allocation 8.00% 8.00%
Pension [Member] | Real Estate [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]    
Actual Plan Asset Allocation 6.00% 5.00%
Plan Asset Target Allocation 9.00%  
Postretirement Health and Life [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]    
Actual Plan Asset Allocation [1] 100.00% 100.00%
Plan Asset Target Allocation [2] 100.00%  
Postretirement Health and Life [Member] | Equity Securities [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]    
Actual Plan Asset Allocation [1] 57.00% 58.00%
Plan Asset Target Allocation [2] 60.00%  
Postretirement Health and Life [Member] | Debt Securities [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]    
Actual Plan Asset Allocation [1] 35.00% 34.00%
Plan Asset Target Allocation [2] 37.00%  
Postretirement Health and Life [Member] | Private Equity [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]    
Actual Plan Asset Allocation [1] 8.00% 8.00%
Postretirement Health and Life [Member] | Real Estate [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]    
Actual Plan Asset Allocation [1] 0.00% 0.00%
Plan Asset Target Allocation [2] 3.00%  
[1] Includes VEBAs and irrevocable grantor trusts.
[2] Includes VEBAs and irrevocable grantor trusts.