Pension Plans, Retirement Benefits and Savings Plans (Tables)

9 Months Ended

Sep. 30, 2021

Retirement Benefits [Abstract]

Summary of the components of net periodic benefit cost (benefit) for the Company's pension and postretirement benefit plans recognized in the consolidated statement of income [Table Text Block]

The following table summarizes the components of net periodic benefit cost (benefit) for the Company’s pension and postretirement benefit plans recognized in the consolidated statement of income for the three months ended September 30, 2021 and 2020.

	Pension Plans				Postretirement Benefit Plans
(for the three months ended September 30, in millions)	2021		2020		2021		2020
Net Periodic Benefit Cost (Benefit):
Service cost	$	35	$	34	$	—	$	—
Non-service cost (benefit):
Interest cost on benefit obligation	$	21	$	29	$	1	$	1
Expected return on plan assets	(69)		(69)		—		—
Amortization of unrecognized:
Prior service benefit	(1)		(1)		(1)		(1)
Net actuarial (gain) loss	28		23		(1)		(1)
Total non-service cost (benefit)	(21)		(18)		(1)		(1)
Net periodic benefit cost (benefit)	$	14	$	16	$	(1)	$	(1)

The following table summarizes the components of net periodic benefit cost (benefit) for the Company’s pension and postretirement benefit plans recognized in the consolidated statement of income for the nine months ended September 30, 2021 and 2020.

	Pension Plans				Postretirement Benefit Plans
(for the nine months ended September 30, in millions)	2021		2020		2021		2020
Net Periodic Benefit Cost (Benefit):
Service cost	$	106	$	100	$	—	$	—
Non-service cost (benefit):
Interest cost on benefit obligation	62		86		2		3
Expected return on plan assets	(206)		(206)		—		—
Amortization of unrecognized:
Prior service benefit	(1)		(1)		(3)		(3)
Net actuarial (gain) loss	82		69		(2)		(2)
Total non-service cost (benefit)	(63)		(52)		(3)		(2)
Net periodic benefit cost (benefit)	$	43	$	48	$	(3)	$	(2)

Consolidated statement of income line items impacted by service costs and non-service cost (benefit) [Table Text Block]

The following table indicates the line items in which the respective service cost and non-service cost (benefit) are presented in the consolidated statement of income for the three months ended September 30, 2021 and 2020.

 

	Pension Plans				Postretirement Benefit Plans
(for the three months ended September 30, in millions)	2021		2020		2021		2020
Service Cost:
Claims and claim adjustment expenses	$	14	$	14	$	—	$	—
General and administrative expenses	21		20		—		—
Total service cost	35		34		—		—
Non-Service Cost (Benefit):
Claims and claim adjustment expenses	(9)		(8)		—		(1)
General and administrative expenses	(12)		(10)		(1)		—
Total non-service cost (benefit)	(21)		(18)		(1)		(1)
Net periodic benefit cost (benefit)	$	14	$	16	$	(1)	$	(1)

The following table indicates the line items in which the respective service cost and non-service benefit cost (benefit) are presented in the consolidated statement of income for the nine months ended September 30, 2021 and 2020.

	Pension Plans				Postretirement Benefit Plans
(for the nine months ended September 30, in millions)	2021		2020		2021		2020
Service Cost:
Claims and claim adjustment expenses	$	43	$	42	$	—	$	—
General and administrative expenses	63		58		—		—
Total service cost	106		100		—		—
Non-Service Cost (Benefit):
Claims and claim adjustment expenses	(26)		(22)		(1)		(1)
General and administrative expenses	(37)		(30)		(2)		(1)
Total non-service cost (benefit)	(63)		(52)		(3)		(2)
Net periodic benefit cost (benefit)	$	43	$	48	$	(3)	$	(2)