TEC is a participant in the comprehensive retirement plans of TECO Energy. The following table presents detail related to TECO Energy’s periodic benefit cost for pension and other postretirement benefits. Amounts disclosed for TECO Energy’s pension benefits include the amounts related to its qualified pension plan and non-qualified, non-contributory SERP and Restoration Plan.

TECO Energy Benefit Cost
(millions)	Pension Benefits								Other Postretirement Benefits
Three months ended June 30,	2019				2018				2019		2018
Components of net periodic benefit cost
Service cost	$	5			$	6			$	0	$	0
Interest cost		8				7				1		2
Expected return on assets		(14	)			(12	)			0		0
Amortization of:
Prior service (benefit) cost		0				0				0		1
Actuarial (gain) loss		5				4				0		(1	)
Settlement cost		0				2		⁽¹⁾		0		0
Net periodic benefit cost	$	4			$	7			$	1	$	2
Six months ended June 30,
Components of net periodic benefit cost
Service cost	$	10			$	11			$	0	$	1
Interest cost		16				14				3		4
Expected return on assets		(26	)			(24	)			0		0
Amortization of:
Actuarial (gain) loss		8				9				0		(1	)
Settlement cost		1		⁽¹⁾		2		⁽¹⁾		0		0
Net periodic benefit cost	$	9			$	12			$	3	$	4

(1)Represents TECO Energy’s SERP and Restoration Plan settlement charges as a result of the prior retirements of certain executives.

TEC’s portion of the net periodic benefit cost for the three months ended June 30, 2019 and 2018, respectively, was $3 million and $6 million for pension benefits, and $1 million and $2 million for other postretirement benefits. TEC’s portion of the net periodic benefit cost for the six months ended June 30, 2019 and 2018, respectively, was $7 million and $9 million for pension benefits, and $3 million and $4 million for other postretirement benefits.

TECO Energy assumed a long-term EROA of 7.35% and a discount rate of 4.34% for pension benefits under its qualified pension plan for 2019. For TECO Energy’s other postretirement benefits, TECO Energy used a discount rate of 4.38% for 2019.

TECO Energy made contributions of $7 million and $10 million to its qualified pension plan in the six months ended June 30, 2019 and 2018, respectively. TEC’s portion of these contributions was $5 million and $8 million, respectively. TECO Energy expects to make contributions to the pension plan of $14 million for the remainder of 2019, and TEC estimates its portion of the remaining 2019 contributions to be $10 million.

Included in the benefit cost discussed above, for the three and six months ended June 30, 2019, TEC reclassified $3 million and $6 million, respectively, of unamortized prior service benefits and costs and actuarial gains and losses from regulatory assets to the Consolidated Condensed Statement of Income, compared with $4 million and $8 million for the three and six months ended June 30, 2018, respectively.