XML 182 R112.htm IDEA: XBRL DOCUMENT v3.6.0.2
Employee Benefit Plans Level 4 Obligations and Funded Status (Details) - USD ($)
shares in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Defined Benefit Plan, Contributions by Employer $ 300    
Trusts [Abstract]      
Assets held in rabbi trusts and designated for non qualified pension plans. 132 $ 127  
Fair value of pension plan assets under rabbi trust 4,811 4,557  
Funded status of pension benefits including fair value of pension plan assets under rabbi trust $ (840) 1,177  
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]      
Expired, number of options (94)    
Projected benefit obligation $ 5,650 5,734  
Accumulated benefit obligation 5,650 5,732  
Fair value of plan assets 4,678 4,430  
Other Postretirement Benefit Plan [Member]      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Defined Benefit Plan, Benefit Obligation 272 301 $ 338
Defined Benefit Plan, Service Cost 0 0 0
Defined Benefit Plan, Interest Cost 11 12 14
Defined Benefit Plan, Contributions by Plan Participants 25 25  
Defined Benefit Plan, Actuarial Gain (Loss) (4) 0  
Defined Benefit Plan, Settlements, Benefit Obligation 1 0  
Defined Benefit Plan, Plan Amendments 0 (8)  
Defined Benefit Plan Benefit Obligation Benefits Paid 68 68  
Defined Benefit Plan, Gross Prescription Drug Subsidy Receipts Received 0 2  
Defined Benefit Plan, Foreign Currency Exchange Rate Gain (Loss) 0 0  
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Defined Benefit Plan, Funded Status of Plan (134) (139)  
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets 0 0  
Defined Benefit Plan Expenses Paid 0 0  
Defined Benefit Plan, Benefits Paid (33) (36)  
Defined Benefit Plan, Contributions by Employer 0 0  
Defined Benefit Plan, Actual Return on Plan Assets 9 2  
Defined Benefit Plan, Fair Value of Plan Assets 138 162 196
Increase (Decrease) in Other Operating Assets and Liabilities, Net [Abstract]      
Pension and Other Postretirement Defined Benefit Plans, Current Liabilities 134 139  
Pension Plan [Member]      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Defined Benefit Plan, Benefit Obligation 5,650 5,734 6,025
Defined Benefit Plan, Service Cost 2 2 2
Defined Benefit Plan, Interest Cost 237 235 258
Defined Benefit Plan, Contributions by Plan Participants 0 0  
Defined Benefit Plan, Actuarial Gain (Loss) (9) (18)  
Defined Benefit Plan, Settlements, Benefit Obligation 0 0  
Defined Benefit Plan, Plan Amendments 30 (236)  
Defined Benefit Plan Benefit Obligation Benefits Paid 303 307  
Defined Benefit Plan, Gross Prescription Drug Subsidy Receipts Received 0 0  
Defined Benefit Plan, Foreign Currency Exchange Rate Gain (Loss) 1 (3)  
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Defined Benefit Plan, Funded Status of Plan (972) (1,304)  
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets 0 (3)  
Defined Benefit Plan Expenses Paid (24) (21)  
Defined Benefit Plan, Benefits Paid (279) (282)  
Defined Benefit Plan, Contributions by Employer 301 101  
Defined Benefit Plan, Actual Return on Plan Assets 250 (72)  
Defined Benefit Plan, Fair Value of Plan Assets 4,678 4,430 $ 4,707
Increase (Decrease) in Other Operating Assets and Liabilities, Net [Abstract]      
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent $ 972 1,304  
Lump Sum Benefit Payment [Member] | Pension Plan [Member]      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Defined Benefit Plan, Settlements, Benefit Obligation   51  
Cash [Member] | Pension Plan [Member]      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Defined Benefit Plan, Settlements, Benefit Obligation   $ 21