Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2017

Compensation and Retirement Disclosure [Abstract]

Components of Expense/(Income) Related to Net Benefit Expense

The following table describes the components of expense / (income) related to net benefit expense recorded in labor and fringe on the income statement.

	Pension Benefits
(Dollars in millions)	First Quarters
	2017			2016
Service Cost	$	11		$	12
Interest Cost	23			30
Expected Return on Plan Assets	(42		)	(39		)
Amortization of Net Loss	11			12
Net Periodic Benefit Cost	3			15
Special Termination Benefits - Management Workforce Reduction(a)	50			—
Total Expense	$	53		$	15
	Other Post-retirement Benefits
(Dollars in millions)	First Quarters
	2017			2016
Interest Cost	$	2		3
Amortization of Net Loss	—			1
Net Periodic Benefit Cost	2			4
Special Termination Benefits - Management Workforce Reduction Curtailment(a)	13			—
Total Expense	$	15		$	4

(a) Special termination benefits were charges in the first quarter 2017 that resulted from the management workforce reduction. For further information regarding the plan, see Note 1. Nature of Operations and Significant Accounting Policies.