Employee Benefits (Tables)

9 Months Ended

Sep. 30, 2021

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 September 30,	2021		2020		2021		2020
Service cost - Cost of services	$	59	$	61	$	24	$	22
Service cost - Selling, general and administrative expense	8		15		4		5
Service cost	$	67	$	76	$	28	$	27
Amortization of prior service cost (credit)	$	16	$	16	$	(223)	$	(242)
Expected return on plan assets	(309)		(295)		(6)		(7)
Interest cost	102		124		72		108
Remeasurement loss, net	144		1,092		—		—
Other components	$	(47)	$	937	$	(157)	$	(141)
Total	$	20	$	1,013	$	(129)	$	(114)

	(dollars in millions)
	Pension				Health Care and Life
Nine months ended September 30,	2021		2020		2021		2020
Service cost - Cost of services	$	186	$	179	$	71	$	67
Service cost - Selling, general and administrative expense	26		43		14		15
Service cost	$	212	$	222	$	85	$	82
Amortization of prior service cost (credit)	$	46	$	46	$	(670)	$	(725)
Expected return on plan assets	(927)		(888)		(17)		(20)
Interest cost	296		401		217		322
Remeasurement loss (gain), net	(1,170)		1,427		—		—
Other components	$	(1,755)	$	986	$	(470)	$	(423)
Total	$	(1,543)	$	1,208	$	(385)	$	(341)