Postretirement Benefit Obligations (Tables)

9 Months Ended

Sep. 30, 2024

Postemployment Benefits [Abstract]

Schedule of Net Benefit Costs

The components of net periodic benefit costs for the periods were:

	Successor								Predecessor
	Three Months Ended September 30, 2024		Three Months Ended September 30, 2023		Nine Months Ended September 30, 2024		May 18 through September 30, 2023		January 1 through May 17, 2023
Postretirement benefits service cost (a)	$	—	$	—	$	2	$	1	$	1
Interest cost	17		17		50		25		27
Expected return on plan assets	(17)		(18)		(52)		(26)		(33)
Resolved litigation settlement	15		—		15		—		—
Amortization of:
Net loss	—		—		—		—		2
Postretirement benefit (gain) loss, net (b)	15		(1)		13		(1)		(4)
Net periodic defined benefit cost (credit)	$	15	$	(1)	$	15	$	—	$	(3)

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(a)Activity presented as “Operation, maintenance and development” on the Consolidated Statements of Operations.

(b)Activity presented as “Other non-operating income (expense), net” on the Consolidated Statements of Operations.