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Employee Benefit Plans (Tables)
 9 Months Ended
Sep. 30, 2022
Retirement Benefits [Abstract]  
Schedule of contributions to plans
Contributions to our plans were as follows:
 Quarter Ended September 30,Nine Months Ended September 30,
(dollars in millions)2022202120222021
U.S. qualified defined benefit plans$— $— $— $— 
International defined benefit plans18 8 48 29 
PRB plans8 5 18 9 
Defined contribution plans230 221 792 730 
Schedule of Amounts Recognized in Balance Sheet
The amounts recognized in the Condensed Consolidated Balance Sheet consist of:
(dollars in millions)September 30, 2022December 31, 2021
Noncurrent pension assets (included in Other assets)$4,175 $3,214 
Current pension and PRB liabilities (included in Accrued employee compensation)309 310 
Future pension and postretirement benefit obligations7,362 7,855 
The amounts recognized in Future pension and postretirement benefit obligations consist of:
(dollars in millions)September 30, 2022December 31, 2021
Noncurrent pension liabilities$6,440 $6,873 
Noncurrent PRB liabilities852 903 
Other pension and PRB related items
70 79 
Future pension and postretirement benefit obligations$7,362 $7,855 
Schedule of Net Benefit Costs
The components of net periodic benefit (income) expense for our defined pension and PRB plans were as follows:
 
Pension Benefits
Quarter Ended September 30,
PRB
Quarter Ended September 30,
(dollars in millions)2022202120222021
Operating expense
Service cost$118 $131 $2 $2 
Non-operating expense
Interest cost380 312 7 6 
Expected return on plan assets(883)(869)(5)(5)
Amortization of prior service credit(40)(42)— (1)
Recognized actuarial net loss (gain)76 109 (3)(2)
Net settlement, curtailment and special termination benefit (gain) loss— 1 — — 
Non-service pension income(467)(489)(1)(2)
Total net periodic benefit (income) expense$(349)$(358)$1 $— 
 
Pension Benefits
Nine Months Ended September 30,
PRB
Nine Months Ended September 30,
(dollars in millions)2022202120222021
Operating expense
Service cost$354 $393 $6 $6 
Non-operating expense
Interest cost1,142 937 21 18 
Expected return on plan assets(2,661)(2,608)(16)(15)
Amortization of prior service credit(123)(126)— (3)
Recognized actuarial net loss (gain)230 327 (9)(6)
Net settlement, curtailment and special termination benefit (gain) loss(6)4 — — 
Non-service pension income(1,418)(1,466)(4)(6)
Total net periodic benefit (income) expense$(1,064)$(1,073)$2 $— 
Marketable Securities The fair value of marketable securities held in trusts was as follows:
(dollars in millions)September 30, 2022December 31, 2021
Marketable securities held in trusts$740 $965