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Annual report pursuant to Section 13 and 15(d)

PENSION AND OTHER POSTRETIREMENT BENEFITS - Obligations and Funded Status (Details)

v3.24.0.1
PENSION AND OTHER POSTRETIREMENT BENEFITS - Obligations and Funded Status (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Amounts recognized in Statements of Financial Position: Ìý Ìý Ìý
Pension and OPEB assets $ 329 $ 356 Ìý
Non-current liabilities (821) (1,058) Ìý
Amounts recognized in accumulated other comprehensive loss (income): Ìý Ìý Ìý
Accumulated benefit obligation 4,557 4,628 Ìý
Pension Benefits Ìý Ìý Ìý
Change in benefit obligations: Ìý Ìý Ìý
Benefit obligations — beginning of year 4,646 6,036 Ìý
Service cost 31 45 $ 56
Interest cost 235 144 103
Plan amendments 3 122 Ìý
Actuarial loss (gain) 116 (1,236) Ìý
Benefits paid (436) (431) Ìý
Participant contributions 0 0 Ìý
Effect of settlement (24) (34) Ìý
Other 0 0 Ìý
Benefit obligations — end of year 4,571 4,646 6,036
Change in plan assets: Ìý Ìý Ìý
Fair value of plan assets — beginning of year 4,338 5,606 Ìý
Actual return on plan assets 375 (809) Ìý
Participant contributions 0 0 Ìý
Employer contributions 29 6 Ìý
Benefits paid (436) (431) Ìý
Effect of settlement (24) (34) Ìý
Fair value of plan assets — end of year 4,282 4,338 5,606
Funded status (289) (308) Ìý
Amounts recognized in Statements of Financial Position: Ìý Ìý Ìý
Pension and OPEB assets 137 195 Ìý
Current liabilities (18) (30) Ìý
Non-current liabilities (408) (473) Ìý
Total amount recognized (289) (308) Ìý
Amounts recognized in accumulated other comprehensive loss (income): Ìý Ìý Ìý
Net actuarial gain (304) (361) Ìý
Prior service cost (credit) 106 121 Ìý
Net amount recognized (198) (240) Ìý
OPEB Ìý Ìý Ìý
Change in benefit obligations: Ìý Ìý Ìý
Benefit obligations — beginning of year 1,233 3,254 Ìý
Service cost 10 35 51
Interest cost 64 72 74
Plan amendments 8 (163) Ìý
Actuarial loss (gain) (158) (1,781) Ìý
Benefits paid (163) (232) Ìý
Participant contributions 42 47 Ìý
Effect of settlement 0 0 Ìý
Other 0 1 Ìý
Benefit obligations — end of year 1,036 1,233 3,254
Change in plan assets: Ìý Ìý Ìý
Fair value of plan assets — beginning of year 728 812 Ìý
Actual return on plan assets 67 (97) Ìý
Participant contributions 42 47 Ìý
Employer contributions 65 198 Ìý
Benefits paid (163) (232) Ìý
Effect of settlement 0 0 Ìý
Fair value of plan assets — end of year 739 728 $ 812
Funded status (297) (505) Ìý
Amounts recognized in Statements of Financial Position: Ìý Ìý Ìý
Pension and OPEB assets 192 161 Ìý
Current liabilities (76) (81) Ìý
Non-current liabilities (413) (585) Ìý
Total amount recognized (297) (505) Ìý
Amounts recognized in accumulated other comprehensive loss (income): Ìý Ìý Ìý
Net actuarial gain (2,033) (1,996) Ìý
Prior service cost (credit) (131) (156) Ìý
Net amount recognized $ (2,164) $ (2,152) Ìý