Employee Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2017

Compensation And Retirement Disclosure [Abstract]

Schedule of Net Periodic Benefit Cost

The following table presents detail related to TECO Energy’s periodic expense 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.

TECO Energy Pension Expense
(millions)	Pension Benefits							Other Postretirement Benefits
Three months ended March 31,	2017				2016			2017			2016
Components of net periodic benefit expense
Service cost	$	5			$	5		$	1		$	1
Interest cost		7				8			2			2
Expected return on assets		(12	)			(11	)		0			0
Amortization of:
Prior service (benefit) cost		0				0			(1	)		(1	)
Actuarial loss		4				3			0			0
Settlement cost		7		(1)		0			0			0
Net pension expense recognized in the    TECO Energy Consolidated Condensed Statements of Income	$	11			$	5		$	2		$	2

(1) Represents TECO Energy’s SERP settlement charge as a result of retirements that occurred subsequent to the Merger with Emera. The charge did not impact TEC’s financial statements.