Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans - Pretax Amounts Included in Accumulated OCI (Details)

v3.6.0.2
Employee Benefit Plans - Pretax Amounts Included in Accumulated OCI (Details) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]    
Net actuarial loss (gain) $ 5,554 $ 4,755
Prior service cost (credits) 16 6
Amounts recognized in accumulated OCI 5,570 4,761
Qualified Pension Plan    
Defined Benefit Plan Disclosure [Line Items]    
Net actuarial loss (gain) 4,429 3,920
Prior service cost (credits) 0 0
Amounts recognized in accumulated OCI 4,429 3,920
Non-U.S. Pension Plans    
Defined Benefit Plan Disclosure [Line Items]    
Net actuarial loss (gain) 216 137
Prior service cost (credits) 4 (10)
Amounts recognized in accumulated OCI 220 127
Nonqualified and Other Pension Plans    
Defined Benefit Plan Disclosure [Line Items]    
Net actuarial loss (gain) 953 848
Prior service cost (credits) 0 0
Amounts recognized in accumulated OCI 953 848
Postretirement Health and Life Plans    
Defined Benefit Plan Disclosure [Line Items]    
Net actuarial loss (gain) (44) (150)
Prior service cost (credits) 12 16
Amounts recognized in accumulated OCI $ (32) $ (134)