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RESERVE ROLLFORWARDS (Tables)
12 Months Ended
Dec. 31, 2024
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Schedule of Valuation and Qualifying Accounts
Valuation and Qualifying Accounts
(Dollars in millions)Additions
 
Balance at January 1,
2024
Charges (Credits) to Cost and ExpenseOther Accounts 
 
Deductions
Balance at December 31, 2024
Reserve for:     
Credit losses$17 $(2)$— $— $15 
LIFO inventory
421 (46)— — 375 
Non-environmental asset retirement obligations51 — — 53 
Environmental contingencies284 13 — 13 284 
Deferred tax valuation allowance
183 (8)511 — 686 
 $956 $(41)$511 $13 $1,413 

(Dollars in millions)Additions
 
Balance at January 1,
2023
Charges (Credits) to Cost and ExpenseOther Accounts 
 
Deductions
Balance at December 31, 2023
Reserve for:     
Credit losses$15 $$— $— $17 
LIFO inventory
493 (72)— — 421 
Non-environmental asset retirement obligations51 — 51 
Environmental contingencies274 26 — 16 284 
Deferred tax valuation allowance258 (76)— 183 
 $1,091 $(119)$$17 $956 

(Dollars in millions)Additions
 
Balance at January 1,
2022
Charges (Credits) to Cost and Expense
Other Accounts
Deductions
Balance at December 31, 2022
Reserve for:     
Credit losses$17 $(2)$— $— $15 
LIFO inventory
365 128 — — 493 
Non-environmental asset retirement obligations51 (1)51 
Environmental contingencies281 — 14 274 
Deferred tax valuation allowance339 (79)(2)— 258 
 $1,053 $56 $(3)$15 $1,091