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Employee Benefit Plans - ABO and PBO in Excess of Plan Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
Non-U.S. Pension Plans    
Plans with PBO and ABO in Excess of Plan Assets    
PBO $ 626 $ 574
ABO 594 551
Fair value of plan assets 179 183
Nonqualified and Other Pension Plans    
Plans with PBO and ABO in Excess of Plan Assets    
PBO 1,065 1,075
ABO 1,064 1,074
Fair value of plan assets $ 1 $ 1