Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2023

Contributions to our plans were as follows:


	Quarter Ended March 31,
(dollars in millions)	2023		2022
U.S. qualified defined benefit plans	$	—	$	—
International defined benefit plans	8		12
PRB plans	4		5
Defined contribution plans	372		311

The amounts recognized in the Condensed Consolidated Balance Sheet consist of:


(dollars in millions)	March 31, 2023		December 31, 2022
Noncurrent pension assets (included in Other assets)	$	3,527	$	3,301
Current pension and PRB liabilities (included in Accrued employee compensation)	307		307
Future pension and postretirement benefit obligations	4,676		4,807

The amounts recognized in Future pension and postretirement benefit obligations consist of:


(dollars in millions)	March 31, 2023		December 31, 2022
Noncurrent pension liabilities	$	4,004	$	4,133
Noncurrent PRB liabilities	612		611
Other pension and PRB related items	60		63
Future pension and postretirement benefit obligations	$	4,676	$	4,807

The components of net periodic benefit (income) expense for our defined pension and PRB plans were as follows:


	Pension Benefits Quarter Ended March 31,				PRB Quarter Ended March 31,
(dollars in millions)	2023		2022		2023		2022
Operating expense
Service cost	$	55	$	118	$	1	$	2
Non-operating expense
Interest cost	626		382		12		7
Expected return on plan assets	(937)		(890)		(5)		(5)
Amortization of prior service credit	(39)		(42)		—		—
Recognized actuarial net loss (gain)	(95)		77		(8)		(3)
Net settlement, curtailment and special termination benefit (gain) loss	2		(6)		—		—
Non-service pension income	(443)		(479)		(1)		(1)
Total net periodic benefit (income) expense	$	(388)	$	(361)	$	—	$	1

The fair value of marketable securities held in trusts was as follows:


(dollars in millions)	March 31, 2023		December 31, 2022
Marketable securities held in trusts	$	703	$	774