Note 5 - Retirement Plans (Tables)

9 Months Ended

Sep. 30, 2024

Notes Tables

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
Millions	2024			2023			2024			2023
Service cost	$	12		$	13		$	39		$	38
Interest cost		47			48			139			140
Expected return on plan assets		(63	)		(62	)		(189	)		(186	)
Amortization of actuarial loss		4			2			8			6
Net periodic pension (benefit)/cost	$	-		$	1		$	(3	)	$	(2	)