Annual report pursuant to Section 13 and 15(d)

COMPANY-SPONSORED EMPLOYEE BENEFIT PLANS COMPANY-SPONSORED EMPLOYEE BENEFIT PLANS - Effects of One Basis Point Change on Projected Benefit Obligation (Details)

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COMPANY-SPONSORED EMPLOYEE BENEFIT PLANS COMPANY-SPONSORED EMPLOYEE BENEFIT PLANS - Effects of One Basis Point Change on Projected Benefit Obligation (Details) - U.S. Pension Benefits
$ in Millions
 12 Months Ended
Dec. 31, 2018
USD ($)
Pension Benefits  
effects of one-basis point change one PBO [Line Items]  
Defined Benefit Plan, Effect of One Percentage Point Increase on Projected Benefit Obligation $ (69)
Defined Benefit Plan, Effect of One Percentage Point Decrease on Projected Benefit Obligation 73
Postemployment Retirement Benefits  
effects of one-basis point change one PBO [Line Items]  
Defined Benefit Plan, Effect of One Percentage Point Increase on Projected Benefit Obligation (2)
Defined Benefit Plan, Effect of One Percentage Point Decrease on Projected Benefit Obligation $ 2