Benefit Plans (Tables)

9 Months Ended

Jun. 30, 2023

Retirement Benefits [Abstract]

Net Pension and Postretirement Cost

Net pension cost included the following components for the three and nine-month periods:

	Three Months Ended June 30,				Nine Months Ended June 30,
(Millions of dollars)	2023		2022		2023		2022
Service cost	$	24	$	38	$	71	$	106
Interest cost	35		21		103		59
Expected return on plan assets	(38)		(52)		(112)		(146)
Amortization of prior service credit	(2)		(4)		(5)		(12)
Amortization of loss	17		17		49		48
Curtailment/settlement (gain) loss	(14)		(1)		(13)		5
Net pension cost	$	22	$	19	$	92	$	61