Benefit Plans (Tables)

9 Months Ended

Jun. 30, 2015

Compensation and Retirement Disclosure [Abstract]

Net Pension and Postretirement Cost

Net pension and postretirement cost included the following components for the three months ended June 30:

	Pension Plans						Other Postretirement Benefits
(Millions of dollars)	2015			2014			2015			2014
Service cost	$	20		$	18		$	1		$	1
Interest cost		22			23			2			2
Expected return on plan assets		(32	)		(32	)		—			—
Amortization of prior service credit		(4	)		(4	)		(1	)		(1	)
Amortization of loss		18			12			1			—
Net pension and postretirement cost	$	24		$	18		$	2		$	2

Net pension and postretirement cost included the following components for the nine months ended June 30:

	Pension Plans						Other Postretirement Benefits
(Millions of dollars)	2015			2014			2015			2014
Service cost	$	58		$	53		$	2		$	3
Interest cost		66			69			6			7
Expected return on plan assets		(93	)		(94	)		—			—
Amortization of prior service credit		(12	)		(11	)		(4	)		(3	)
Amortization of loss		52			36			2			2
Net pension and postretirement cost	$	70		$	53		$	7		$	8