Employee Retirement Benefits

3 Months Ended

Mar. 31, 2018

Retirement Benefits [Abstract]

Employee Retirement Benefits

Employee Retirement Benefits

The following summarizes the components of net periodic benefit cost for our qualified and supplemental pension plans:

(Dollars in millions)	Three months ended March 31,
	2018			2017
Service cost	$	3		$	3
Non-service costs (benefit):
Interest cost	3			3
Expected return on plan assets	(5		)	(5		)
Amortization of actuarial loss and prior service cost	—			1
Total non-service benefit	(2		)	(1		)
Net periodic benefit cost	$	1		$	2

See our 2017 Annual Report on Form 10-K, Item 8, Note 13, Employee Retirement Benefits, Page 156, for information on our retirement benefits. Service costs and non-service costs (benefit) are allocated in the same proportion primarily to underwriting, acquisition and insurance expenses line item with the remainder allocated to insurance losses and contract holders' benefits line item on the consolidated statements of income for both 2018 and 2017.

We made matching contributions totaling $6 million to our 401(k) and Top Hat savings plans during the first quarter of 2018 and 2017.

We contributed $5 million to our qualified pension plan during the first three months of 2018.