Employee Benefits (Tables)

9 Months Ended

Sep. 30, 2016

Compensation and Retirement Disclosure [Abstract]

Components of Net Periodic Benefit Cost

The components of net periodic benefit cost for the Company’s retirement plans were:

	Three Months Ended September 30,												Nine Months Ended September 30,
	Pension Plans						Postretirement Welfare Plan						Pension Plans						Postretirement Welfare Plan
(Dollars in Millions)	2016			2015			2016			2015			2016			2015			2016			2015
Service cost	$	45		$	47		$	–		$	–		$	133		$	141		$	–		$	–
Interest cost		53			49			–			1			158			146			2			3
Expected return on plan assets		(66	)		(56	)		(1	)		–			(198	)		(167	)		(1	)		(1	)
Prior service cost (credit) amortization		(2	)		(2	)		–			(1	)		(4	)		(4	)		(2	)		(2	)
Actuarial loss (gain) amortization		44			59			(1	)		(1	)		131			176			(3	)		(3	)
Net periodic benefit cost	$	74		$	97		$	(2	)	$	(1	)	$	220		$	292		$	(4	)	$	(3	)