Employee Benefits (Tables)

6 Months Ended

Jun. 30, 2020

Retirement Benefits [Abstract]

Benefit or (Income) Cost Related to Pension and Postretirement Health Care and Life Insurance

The following table summarizes the components of net periodic benefit cost (income) related to our pension and postretirement health care and life insurance plans:

	(dollars in millions)
	Pension				Health Care and Life
Three Months Ended June 30,	2020		2019		2020		2019
Service cost - Cost of services	$	59	$	50	$	23	$	19
Service cost - Selling, general and administrative expense	14		12		5		5
Service cost	$	73	$	62	$	28	$	24
Amortization of prior service cost (credit)	$	15	$	16	$	(242)	$	(243)
Expected return on plan assets	(296)		(282)		(6)		(10)
Interest cost	137		176		107		158
Remeasurement loss, net	153		—		—		—
Other components	$	9	$	(90)	$	(141)	$	(95)
Total	$	82	$	(28)	$	(113)	$	(71)

	(dollars in millions)
	Pension				Health Care and Life
Six Months Ended June 30,	2020		2019		2020		2019
Service cost - Cost of services	$	118	$	100	$	45	$	39
Service cost - Selling, general and administrative expense	28		23		10		9
Service cost	$	146	$	123	$	55	$	48
Amortization of prior service cost (credit)	$	30	$	31	$	(483)	$	(486)
Expected return on plan assets	(593)		(564)		(13)		(19)
Interest cost	277		354		214		315
Remeasurement loss (gain), net	335		(96)		—		—
Other components	$	49	$	(275)	$	(282)	$	(190)
Total	$	195	$	(152)	$	(227)	$	(142)