Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans - ABO and PBO in Excess of Plan Assets (Details)

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Employee Benefit Plans - ABO and PBO in Excess of Plan Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Non-U.S. | Pension Plan    
Plans with PBO and ABO in Excess of Plan Assets    
PBO $ 615 $ 671
ABO 605 644
Fair value of plan assets 173 191
U.S. | Nonqualified | Other Pension Plan    
Plans with PBO and ABO in Excess of Plan Assets    
PBO 950 1,054
ABO 949 1,053
Fair value of plan assets $ 1 $ 1