Annual report pursuant to Section 13 and 15(d)

BENEFIT PLANS - Fair Value of Plan Assets (Details 1)

v3.10.0.1
BENEFIT PLANS - Fair Value of Plan Assets (Details 1) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Change in Fair Value of Plan Assets [Abstract]    
Fair value of plan assets at beginning of measurement year $ 903  
Fair value of plan assets at end of measurement year 828 $ 903
Pension Benefits    
Change in Fair Value of Plan Assets [Abstract]    
Fair value of plan assets at beginning of measurement year 903 841
Actual return on plan assets (30) 118
Settlements (19) (29)
Defined Benefit Plan, Plan Assets, Benefits Paid 26 27
Total changes (75) 62
Fair value of plan assets at end of measurement year $ 828 $ 903