Retirement and Post-Retirement Benefit Plans (Tables)

6 Months Ended

Apr. 30, 2017

Compensation and Retirement Disclosure [Abstract]

Schedule of Pension and Post-Retirement Benefit (Credit) Cost

The components of HP’s pension and post-retirement benefit (credit) cost recognized in the Consolidated Condensed Statements of Earnings were as follows:

	Three months ended April 30
	U.S. Defined Benefit Plans						Non-U.S. Defined Benefit Plans						Post-Retirement Benefit Plans
	2017			2016			2017			2016			2017			2016
	In millions
Service cost	$	—		$	—		$	12		$	12		$	—		$	—
Interest cost	117			136			4			6			5			5
Expected return on plan assets	(170		)	(183		)	(8		)	(12		)	(6		)	(8		)
Amortization and deferrals:
Actuarial loss (gain)	18			14			10			6			(5		)	(3		)
Prior service benefit	—			—			(1		)	(1		)	(5		)	(4		)
Net periodic benefit (credit) cost	(35		)	(33		)	17			11			(11		)	(10		)
Settlement loss	3			1			—			1			—			—
Special termination benefits	—			—			—			—			—			9
Total periodic benefit (credit) cost	$	(32	)	$	(32	)	$	17		$	12		$	(11	)	$	(1	)

	Six months ended April 30
	U.S. Defined Benefit Plans						Non-U.S. Defined Benefit Plans						Post- Retirement Benefit Plans
	2017			2016			2017			2016			2017			2016
	In millions
Service cost	$	—		$	—		$	24		$	23		$	—		$	—
Interest cost	234			272			8			12			9			10
Expected return on plan assets	(339		)	(366		)	(16		)	(24		)	(12		)	(16		)
Amortization and deferrals:
Actuarial loss (gain)	36			28			20			12			(7		)	(6		)
Prior service benefit	—			—			(2		)	(2		)	(10		)	(8		)
Net periodic benefit (credit) cost	(69		)	(66		)	34			21			(20		)	(20		)
Settlement loss	3			1			—			1			—			—
Special termination benefits	—			—			—			—			—			9
Total periodic benefit (credit) cost	$	(66	)	$	(65	)	$	34		$	22		$	(20	)	$	(11	)