11. RETIREMENT PLANS AND POST-RETIREMENT PENSION PLANS

Components of net periodic costs. For the three months ended January 31, 2015 and 2014, our net pension and post-retirement benefit costs were comprised of the following:



	Pensions
	U.S. Defined Benefit Plans					Non-U.S. Defined Benefit Plans					U.S. Post-Retirement Benefit Plan
	Three Months Ended January 31,
	2015			2014		2015			2014		2015			2014
	(in millions)
Service cost—benefits earned during the period	$	5		$	—	$	4		$	—	$	—		$	—
Interest cost on benefit obligation	5			—		11			—		2			—
Expected return on plan assets	(9		)	—		(19		)	—		(4		)	—
Amortization:
Net actuarial losses	1			—		7			—		3			—
Prior service credit	(2		)	—		—			—		(5		)	—
Allocated benefit cost from Agilent	—			1		—			3		—			3
Total periodic benefit cost (benefit)	$	—		$	1	$	3		$	3	$	(4	)	$	3

We did not contribute to our U.S. Defined Benefit Plans or U.S. Post-Retirement Benefit Plan during the three months ended January 31, 2015 and 2014. We contributed $14 million to our Non-U.S. Defined Benefit Plans during the three months ended January 31, 2015. Contributions of $10 million to the Non-U.S. Defined Benefit Plans were made by Agilent on our behalf for the three months ended January 31, 2014.

We do not expect to contribute to our U.S. Defined Benefit Plans during the remainder of 2015 and expect to contribute $32 million to our Non-U.S. Defined Benefit Plans during the remainder of 2015.