XML 146 R118.htm IDEA: XBRL DOCUMENT v3.20.4
EMPLOYEE BENEFITS - Changes in the Fair Value of Pension Plan Assets, Projected Benefit Obligation, Funded Status, and Accumulated Benefit Obligation (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Qualified Plan    
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]    
Fair value of plan assets as of January 1 $ 1,246 $ 1,050
Actual return on plan assets 165 259
Employer contributions 0 0
Benefits and administrative expenses paid (68) (63)
Fair value of plan assets as of December 31 1,343 1,246
Projected benefit obligation 1,157 1,075
Pension asset (obligation) 186 171
Accumulated benefit obligation 1,157 1,075
Non-Qualified Plan    
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]    
Fair value of plan assets as of January 1 0 0
Actual return on plan assets 0 0
Employer contributions 8 8
Benefits and administrative expenses paid (8) (8)
Fair value of plan assets as of December 31 0 0
Projected benefit obligation 105 102
Pension asset (obligation) (105) (102)
Accumulated benefit obligation $ 105 $ 102